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Electrical Center Identification Views

Fig 1: Fuse Block - Auxiliary (HP2) Label
GM1991190Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - AUXILIARY (HP2) FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 ACPO Fuse 25A Accessory Power Inverter Module
2 BECM FAN Fuse 15A Generator Battery Vent Fan Relay
3 ACCM Fuse 15A A/C Compressor
4 CAB HTR PUMP Fuse 10A Heater Coolant Pump
5 EMPTY - Not Used
6 COOL PUMP Fuse 15A Generator Control Module Coolant Pump - Left, Generator Control Module Coolant Pump - Right
7 EPS Fuse 15A Electronic Power Steering Motor Control Module
8 PIM 1 Fuse 15A Drive Motor Generator Power Inverter Module
9 PIM 2 Fuse 15A Drive Motor Generator Power Inverter Module
10 BECM Fuse 15A Drive Motor Generator Battery Control Module, Serial Data Gateway (SDG) Module
- FAN 1 Fuse 40A FAN LO Relay, FAN MID 1 Relay
- FAN 2 Fuse 40A FAN HI Relay, FAN MID 2 Relay
- TRANS PUMP Fuse 60A Auxiliary Transmission Pump Control Module
- CAB HTR PUMP Relay - CAB HTR PUMP Fuse, Heater Coolant Pump
- COOL PUMP Relay - COOL PUMP Fuse, Generator Control Module Coolant Pump - Left, Generator Control Module Coolant Pump - Right
- FAN LO Relay - Cooling Fan - Left
- FAN MID 1 Relay - Engine Cooling Fan Resistor - Left
- FAN MID 2 Relay - Cooling Fan - Right
- FAN HI Relay - Cooling Fan - Right
- FAN CNTRL Relay - Cooling Fan - Left
Fig 2: Fuse Block - Auxiliary (HP2), Top View
GM1991278Courtesy of GENERAL MOTORS CORP.
Fig 3: Fuse Block - Auxiliary (HP2), Bottom View
GM1991277Courtesy of GENERAL MOTORS CORP.
Fig 4: Fuse Block - Auxiliary X1 (HP2)
GM1581655Courtesy of GENERAL MOTORS CORP.
Fuse Block - Auxiliary X1 (HP2)

Pin Wire Circuit Function
A1 0.35 D-BU 473 High Speed Cooling Fan Relay Control
A2 0.35 PU 5128 Auxiliary Cooling Fan Relay Control
A3 0.5 PK 1839 Ignition Voltage
A4-A8 - - Not Used
B1-B2 - - Not Used
B3 0.8 RD/WH 3340 Battery Positive Voltage
B4 0.8 RD/WH 4640 Battery Positive Voltage
B5 1 RD/WH 4140 Battery Positive Voltage
C1 0.8 PK 2014 Coolant Pump Relay Control
C2 0.5 TN 955 Low Reference
C3 0.5 YE 954 5-Volt Reference
C4-C8 - - Not Used
D1 0.8 OG/WH 7585 Motor Feed
D2-D5 - - Not Used
E1 - - Not Used
E2 5 RD/WH 4040 Battery Positive Voltage
F1-F2 - - Not Used
G1-G4 - - Not Used
G5 0.5 D-GN 942 Generator Control Module Coolant Pump Feed
H1-H2 - - Not Used
H3 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
H4 0.5 PU 5531 Hood Switch Signal
H5-H7 - - Not Used
H8 0.5 D-BU 941 Generator Control Module Coolant Pump Relay Control
J1 0.8 RD/WH 4240 Battery Positive Voltage
0.8 RD/WH 4240 Battery Positive Voltage
J2 0.8 RD/WH 984 5-Volt Reference
J3 0.8 RD/WH 983 Transmission Fluid Pump Control
J4 0.5 RD/WH 40 Battery Positive Voltage
J5 - - Not Used
K1 - - Not Used
K2 0.5 PK/BK 109 Hood Ajar Switch Signal
K3-K8 - - Not Used
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 15477822
  • Service Connector: 19115189
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: E2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: A1-A3, C1-C3, H2-H4, K1, K2
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins A1-A3, C2, C3, H2-H4, K1, K2 - E/C
  • Core/Insulation Crimp: Pins C1 - C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: B3-B5, D1, J1-J4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B3-B5, D1, J1-J3 - 2/A
  • Core/Insulation Crimp: Pins J4 - E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 5: Fuse Block - Auxiliary X2 (HP2)
GM1665657Courtesy of GENERAL MOTORS CORP.
Fuse Block - Auxiliary X2 (HP2)

Pin Wire Circuit Function
A1 - - Not Used
A2 0.5 PU 5531 Hood Switch Signal
A3 0.5 PK/BK 109 Hood Ajar Switch Signal
A4 - - Not Used
A5 0.5 PU 5531 Hood Switch Signal
A6 0.5 PU 5531 Hood Switch Signal
A7 0.5 PK/BK 109 Hood Ajar Switch Signal
A8 0.5 PK/BK 109 Hood Ajar Switch Signal
B1-B5 - - Not Used
C1 5 GY 532 Cooling Fan Motor Supply Voltage
C2 5 L-BU 409 Cooling Fan Motor Supply Voltage
D1 5 GY 532 Cooling Fan Motor Supply Voltage
D2 5 L-BU 409 Cooling Fan Motor Supply Voltage
E1-E5 - - Not Used
F1 0.8 BK 250 Ground
F2-F3 - - Not Used
F4 0.5 YE 954 Electronics Coolant Temperature Sensor 5-volt Reference
F5 0.5 YE 955 Electronics Coolant Temperature Sensor Low Reference
F6-F8 - - Not Used
Connector Part Information 
  • Harness Type: Forward Lamp
  • OEM Connector: 13567518
  • Service Connector: 19180280
  • Description: 30-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: C1, C2, D1, D2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: A2-A8, E3, F1-F5
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pins A2-A8, E3, F2, F4, F5 - E/A
  • Core/Insulation Crimp: Pins F1-2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
Fig 6: Fuse Block - Auxiliary X3 (HP2)
GM647933Courtesy of GENERAL MOTORS CORP.
Fuse Block - Auxiliary X3 (HP2)

Pin Wire Circuit Function
A 5 BK 150 Ground
B 5 YE 5358 Auxiliary Cooling Fan Motor Supply Voltage
Fuse Block - Auxiliary, Fuse Holder (Battery Positive Cable) (HP2)

Terminal Part Information 
  • Harness Type: Battery Positive Cable
  • Terminal: 15326191
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Auxiliary, Fuse Holder (Battery Positive Cable) (HP2)

Pin Wire Circuit Function
+ 50 RD 1 Battery Positive Voltage
Fuse Block - Auxiliary, Fuse Holder (Accessory DC Power Control Module Cable) (HP2)

Terminal Part Information 
  • Harness Type: Accessory DC Power Control Module Cable
  • Terminal: 15326191
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Auxiliary, Fuse Holder (Accessory DC Power Control Module Cable) (HP2)

Pin Wire Circuit Function
+ 62 RD 2 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Forward Lamp
  • OEM Connector: 12193693
  • Service Connector: 12193693
  • Description: 2-Way F MAXI FUSE (BK)
Terminal Part Information 
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 7: Fuse Block - Underhood Label
GM2026167Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 TRLR STOP RT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
2 ESC/ALC EXH Fuse 30A Automatic Level Control (ALC) Compressor (G69), Electronic Suspension Control (ESC) Module (Z55)
3 TRLR STOP LT Fuse 10A Trailer Wiring, Auxiliary Body Control Module (XBCM) (EXP)
4 ENG Fuse 15A Evaporative Emissions (EVAP) Canister Purge Solenoid Valve, Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor, Valve Lifter Oil Manifold (VLOM) Assembly (AFM)
5 ECM/THROT CONT Fuse 15A Engine Control Module (ECM)
6 ITBC Fuse 15A Not Used
7 FRT WASH Fuse 15A Windshield Washer Fluid Pump
8 O2-B SNSR Fuse 10A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
9 ABS 2 Fuse 25A Electronic Brake Control Module (EBCM)
10 TRLR BCK/UP Fuse 10A Trailer Wiring
11 LO HDLP-LT Fuse 20A Headlamp - Left (Z88), Headlamp - Low Beam - Left (X88), Headlamp Ballast - Left (Z75)
12 ECM-BATT Fuse 10A Engine Control Module (ECM)
13 INJ-B Fuse 20A Fuel Injector 2, Fuel Injector 4, Fuel Injector 6, Fuel Injector 8, Ignition Coil 2, Ignition Coil 4, Ignition Coil 6, Ignition Coil 8
14 TCM-BATT Fuse 15A Evaporative Emissions (EVAP) Canister Vent Solenoid Valve, Transmission Control Module (TCM)
15 VEH BCK/UP Fuse 10A Backup Lamp - Left, Backup Lamp - Right
16 LO HDLP-RT Fuse 20A Headlamp - Right (Z88), Headlamp - Low Beam - Right (X88), Headlamp Ballast - Right (Z75)
17 A/C CMPRSR Fuse 10A A/C Compressor Clutch
18 O2-A SNSR Fuse 10A Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
19 TRANS IGN 1 Fuse 15A Transmission Control Module (TCM), 1-2 Shift Solenoid (1-2 SS) Valve, 2-3 Shift Solenoid (2-3 SS) Valve, 3-2 Shift Solenoid (3-2 SS) Valve (M30 or (M30), Torque Converter Clutch (TCC) Solenoid Valve (M30), Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve
20 FUEL PUMP Fuse 20A Fuel Pump and Sender Assembly - Primary
21 FSCM Fuse 20A Fuel Pump Flow Control Module
22 HDLP WASH Fuse 20A Not Used
23 REAR WASH Fuse 15A Rear Window Washer Fluid Pump
24 INJ-A Fuse 20A Fuel Injector 1, Fuel Injector 3, Fuel Injector 5, Fuel Injector 7, Ignition Coil 1, Ignition Coil 3, Ignition Coil 5, Ignition Coil 7
25 TRLR PRK Fuse 15A Trailer Wiring
26 LT PRK Fuse 15A License Lamp - Left, License Lamp - Right, Marker Lamp - Left Front, Park/Turn Signal Lamp - Left Front (X88/Z88), Park Lamp - Left Front (Z75), Tail Lamp Circuit Board - Left (Z75 with E52), Marker Lamp - Left Rear (except Z75 with E52), Tail/Stop and Turn Signal Lamp - Lower Left (except Z75 with E52), Tail/Stop and Turn Signal Lamp - Upper Left (except Z75 with E52)
27 RT PRK Fuse 15A Tail Lamp Circuit Board - Right (Z75 with E52), Marker Lamp - Right Front, Park Lamp - Right Front (Z75), Park/Turn Signal Lamp - Right Front (X88 or Z88), Tail/Stop and Turn Signal Lamp - Lower Right (X88, Z88 or Z75 with E52), Tail/Stop and Turn Signal Lamp - Upper Right (X88, Z88 or Z75 with E52), Marker Lamp - Right Rear (X88, Z88 or Z75 with E52)
28 FOG LAMP Fuse 15A Fog Lamp - Left Front (T96), Fog Lamp - Right Front (T96)
29 HORN Fuse 15A Horn - Left, Horn - Right
30 HI HEADLAMP-RT Fuse 10A Headlamp - Right (Z88), Headlamp - Right High Beam (X88 or Z75)
31 DRL Fuse 15A Daytime Running Lamp (DRL) - Left (Z75 or X88), Daytime Running Lamp (DRL) - Right (Z75 or X88), DRL 2 Fuse (Z88)
32 HI HEADLAMP-LT Fuse 10A Headlamp - Left (Z88), Headlamp - High Beam - Right (X88 or Z75)
33 DRL 2 Fuse 15A LO HDLP - LT Fuse (Z88), LO HDLP - RT Fuse (Z88)
34 S/ROOF Fuse 30A Sunroof Control Module (CF5), Roof Beacon Relay (5G4)
35 DLIS Fuse 2A Ignition Switch, Theft Deterrent Module (TDM)
36 FRT WPR Fuse 25A Wiper 1 PCB Relay
37 SEO B2 Fuse 30A Not Used
38 EAP Fuse 15A PARK ENABLE PCB Relay, ELECTRONIC ADJUSTABLE PEDALS PCB Relay, Folding Seat Switch - Front (ARS), Folding Seat Switch - Left Rear (ARS), Folding Seat Switch - Right Rear (ARS), Multifunction Switch - I/P, Police Provision Wiring (6J1)
39 HVAC BATT Fuse 10A HVAC Control Module
40 AIRBAG IGN Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Passenger Air Bag ON/OFF Indicator
41 AMP Fuse 30A Audio Amplifier (UQA or UQS)
42 RDO Fuse 15A Clock (Z75), Digital Radio Receiver (U2K), Radio, Rear Seat Audio (RSA) Controller (UK6)
43 MISC IGN Fuse 10A Auxiliary Body Control Module (XBCM) (EXP), Rearview Camera (UVC or SPO Accessory - Rear Vision Camera), Seat Climate Control Module (KB6), Stop Lamp Switch, Transfer Case Shift Control Module (NQH), Serial Data Gateway (SDG) Module (HP2)
44 L/GATE RELSE Fuse 15A Liftgate Latch Assembly (E52)
45 AIRBAG BATT Fuse 15A Inflatable Restraint Passenger Presence System (PPS) Module, Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Vehicle Rollover Sensor (ASF)
46 IPC Fuse 10A Body Control Module (BCM), Instrument Panel Cluster (IPC)
47 EXP/PTO Fuse 15A Auxiliary Body Control Module (XBCM) (EXP), Spot Lamp - Left (7X6)
48 AUX HVAC-IGN Fuse 10A Electronic Compass Module (YE9), Instrument Panel Cluster (IPC), Inside Rearview Mirror (ISRVM), Mode Actuator - Auxiliary (C69), Air Temperature Actuator - Auxiliary (C69), Inflatable Restraint Steering Wheel Module Coil (KA9), Heated Steering Wheel Control Module (KA9)
49 CHMSL Fuse 15A Not Used
50 REAR DEFOG Fuse 30A Rear Window Defogger Grid
51 HTD MIR Fuse 15A Not Used
52 SEO B1 Fuse 15A Auxiliary Body Control Module (XBCM) (EXP), Spot Lamp - Right (7X7), Vehicle Inclination Sensor (SPO Alarm), Security Indicator Lamp (SPO Alarm), Vehicle Shock Sensor (SPO Alarm)
53 LTR Fuse 20A Accessory Power Outlet - I/P 1, Data Link Connector (DLC)
54 SEO/ALC Fuse 10A Automatic Level Control (ALC) Relay (G69), Inline Fuse Digital Video Disc (DVD) Control Module (SPO Accessory - Headrest DVD)
55 HVAC-IGN Fuse 10A Air Temperature Actuator - Left, Air Temperature Actuator - Right, Mode Actuator, Recirculation Actuator
56 ECM-IGN Fuse 15A Engine Control Module (ECM), Fuel Pump Relay - Secondary (LY6), Fuel Pump Flow Control Module (except LY6), Electronic Brake Control Module (EBCM) (HP2)
57 FAN-1 Fuse 40A FAN LO PCB Relay
58 ALC/COMP Fuse 40A Automatic Level Control (ALC) Relay (G69)
59 HEAVY DUTY ABS Fuse 60A Electronic Brake Control Module (EBCM)
60 FAN-2 Fuse 40A FAN HI PCB Relay
61 ABS-1 Fuse 40A Electronic Brake Control Module (EBCM)
62 STRTR Fuse 40A Starter Motor
63 STUD-2 Fuse 30A Blunt Cut Wire
64 LBEC1 Fuse 60A AUX PWR 2 Fuse, REAR WPR Fuse, PDM Fuse, AUX PWR Fuse
65 ELEC RUN BOARD Fuse 30A Assist Step Control Module (BRS)
66 WSW/HTR Fuse 60A Windshield Washer Solvent Heater (XA7)
67 TREC Fuse 30A Transfer Case Encoder Motor (NQH), Transfer Case Shift Control Module (NQH)
68 STUD-1 Fuse 40A Trailer Wiring
69 MBEC1 Fuse 60A DRIVER SEAT 2 Circuit Breaker, PASS SEAT 1 Circuit Breaker, RT DOORS Circuit Breaker
70 HVAC BLWR Fuse 40A Blower Motor Control Module
71 LGM Fuse 30A Liftgate Module (LGM) (E61)
72 LBEC2 Fuse 60A BCM Fuse, COOLED SEATS Fuse, DDM Fuse, DIM Fuse, DSM Fuse, REAR HVAC Fuse, RT STOP TRN Fuse, WSW PUMP Fuse
- A/C CMPRSR Relay - A/C CMPRSR Fuse
- FAN CNTRL Relay - FOG LAMP Fuse
- FAN HI Relay - Cooling Fan - Right, FAN CNTRL Relay
- FAN LO Relay - Cooling Fan - Left
- FOG LAMP Relay - FOG LAMP Fuse
- FUEL PUMP Relay - FUEL PUMP Fuse
- HDLP LO/HID Relay - LO HDLP - LT Fuse, LO HDLP - RT Fuse, DRL 2 Fuse
- PRK LAMP Relay - LT PRK Fuse, RT PRK Fuse, TRLR PRK Fuse
- PWR/TRN Powertrain Relay - ECM/THROT CONT Fuse, ENG Fuse, INJ-A Fuse, INJ-B Fuse, O2-A SNSR Fuse, O2-B SNSR Fuse, FAN CNRTL Relay, FAN HI Relay, FAN LO Relay
- REAR DEFOG Relay - REAR DEFOG Fuse, HTD MIR Fuse
- RUN/CRNK Relay - AIRBAG IGN Fuse, AUX HVAC-IGN Fuse, HVAC-IGN Fuse, ECM-IGN Fuse, MISC IGN Fuse, SEO/ALC Fuse, TRANS IGN 1 Fuse
- STARTER Relay - STRTR Fuse
NOTE: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
- BCK/UP LAMP PCB Relay - VEH BCK/UP Fuse, TRLR BCK/UP Fuse
- CHMSL PCB Relay - CHMSL Fuse
- DRL PCB Relay - DRL Fuse
- FAN CNTRL PCB Relay - Cooling Fan - Right
- FRT WASH PCB Relay - FRT WASH Fuse
- HI BEAM PCB Relay - HI HEADLAMP - LT Fuse, HI HEADLAMP - RT Fuse
- HORN PCB Relay - HORN Fuse
- L/GATE PCB Relay - L/GATE RELSE Fuse
- REAR WASH PCB Relay - REAR WASH Fuse
- RUN PCB Relay - FWD Fuse, HTD STR/WHL Fuse
- TRLR STOP LT PCB Relay - TRLR STOP LT Fuse
- TRLR STOP RT PCB Relay - TRLR STOP RT Fuse
- WIPER 1 PCB Relay - Wiper 2 PCB Relay
- WIPER 2 PCB Relay - Windshield Wiper Motor
NOTE: Items listed below are wiper system diagnostic test points.
- TP 92 - Wiper High Speed Test Point
- TP 95 - Wiper Low Speed Test Point
Fig 8: Fuse Block - Underhood, Top View
GM2058785Courtesy of GENERAL MOTORS CORP.
Fig 9: Fuse Block - Underhood, Bottom View
GM1991083Courtesy of GENERAL MOTORS CORP.
Fig 10: Fuse Block - Underhood X1
GM1665656Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X1

Pin Wire Circuit Function
A1 0.8 BK 250 Ground
A2 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Supply Voltage
A3 0.5 D-BU 545 Daytime Running Lamps (DRL) Supply Voltage (Z88 with T61)
A4 0.5 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage
A5-A6 - - Not Used
A7 0.5 L-GN/BK 311 Right Headlamp High Beam Supply Voltage
A8 0.5 D-GN/WH 711 Left Headlamp High Beam Supply Voltage
B1-B2 - - Not Used
B3 0.5 D-BU 545 Daytime Running Lamps (DRL) Supply Voltage
0.5 D-BU 545 Daytime Running Lamps (DRL) Supply Voltage (Z88 with T61)
B4 0.5 RD/WH 3640 Battery Positive Voltage (CE4)
B5 0.8 PU 2234 Front Fog Lamp Supply Voltage (T96)
0.8 PU 2234 Front Fog Lamp Supply Voltage (T96)
C1 0.5 GY 532 Cooling Fan Motor Supply Voltage (except HP2)
C2 0.5 YE 5358 Auxiliary Cooling Fan Motor Supply Voltage (except HP2)
D1 0.5 L-BU 409 Cooling Fan Motor Supply Voltage (except HP2)
D2 5 BK 150 Ground (except HP2)
E1 0.5 OG 228 Windshield Washer Pump Control
E2 0.8 YE 712 Left Headlamp Low Beam Supply Voltage
E3 0.8 TN/WH 312 Right Headlamp Low Beam Supply Voltage
E4 0.5 D-GN/WH 266 Rear Window Washer Pump Supply Voltage
E5 0.5 D-GN 29 Horn Control
0.5 D-GN 29 Horn Control
F1 0.5 YE/BK 1334 Left Rear Turn Signal Lamp Supply Voltage (TR2)
F2 0.5 D-GN/WH 1335 Right Rear Turn Signal Lamp Supply Voltage (TR2)
F3-F4 - - Not Used
F5 0.5 BN 2609 Right Rear Park Lamps Supply Voltage
F6-F7 - - Not Used
F8 0.5 BN 2509 Left Rear Park Lamps Supply Voltage
Connector Part Information 
  • Harness Type: Forward Lamp
  • OEM Connector: 13513343
  • Service Connector: 19115674
  • Description: 30-Way F GT 150 280 Metri-Pack 800 Series (GY)

Terminal Part Information 
  • Pins: A2-A8, F1-F8
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pins A2-A8, F5, F8: E/A
  • Core/Insulation Crimp: Pins F1-F2: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A1, B3, B5, E1-E5
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins B3 (Z88), B5 (Z88), E1, E4-E5: E/A
  • Core/Insulation Crimp: Pins A1, B3 (X88), B5 (X88), E2-E3: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: C1-C2, D1-D2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: L2, L4, M1, N4, P3
  • Terminal/Tray: 13525450/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: L3, M3-M5, N5
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 11: Fuse Block - Underhood X2
GM1665660Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X2

Pin Wire Circuit Function
A1 0.35 D-GN 335 Low Speed Cooling Fan Relay Control (except HP2)
A2-A5 - - Not Used
B1-B3 - - Not Used
B4 0.5 OG 300 Ignition Voltage (HP2)
B5 0.35 D-BU/WH 473 High Speed Cooling Fan Relay Control (except HP2)
C1-C2 - - Not Used
C3 0.8 D-GN/WH 459 A/C Compressor Clutch Relay Control (except HP2)
C4 - - Not Used
C5 0.5 YE/BK 625 Starter Enable Relay Control (except HP2)
D1-D2 - - Not Used
D3 0.5 RD/WH 440 Battery Positive Voltage
D4 0.8 D-GN 59 A/C Compressor Clutch Supply Voltage (except HP2)
D5 0.5 BN 241 Ignition Voltage (NQH, except HP2)
E1-E3 - - Not Used
F1 3 PU 6 Starter Solenoid Crank Voltage (except HP2)
G1 - - Not Used
H1 - - Not Used
J1 - - Not Used
K1-K3 - - Not Used
L1 0.5 PK 1839 Ignition Voltage (L94, LC9 or LMG)
0.5 PK 1839 Ignition Voltage (HP2)
L2 0.5 PK/BK 1539 Ignition Voltage
0.5 PK/BK 1539 Ignition Voltage
L3 0.8 PK/WH 1239 Ignition Voltage
0.8 PK/WH 1239 Ignition Voltage
L4 0.5 PK 539 Ignition Voltage
0.5 PK 539 Ignition Voltage
L5 0.8 PK 1039 Ignition Voltage
M1 0.5 PK 1839 Ignition Voltage
0.5 PK 1839 Ignition Voltage
M2 0.8 PK 1239 Ignition Voltage (HP2)
1 PK/WH 1239 Ignition Voltage (except HP2)
M3 0.8 PK 1239 Ignition Voltage
0.8 PK 1239 Ignition Voltage
M4 0.8 PK/BK 1039 Ignition Voltage
0.8 PK/BK 1039 Ignition Voltage
M5 0.8 PK 1039 Ignition Voltage
0.8 PK 1039 Ignition Voltage
N1 0.5 PK 1339 Ignition Voltage (HP2)
0.5 PK/BK 1339 Ignition Voltage (except HP2)
N2 - - Not Used
N3 0.5 RD/WH 1840 Battery Positive Voltage
N4 0.5 PK/WH 2139 Ignition Voltage
0.5 PK/WH 2139 Ignition Voltage (NP0 or NQH)
N5 2 BK 550 Ground
P1 0.5 PK/BK 1339 Ignition Voltage (HP2)
P2 0.35 YE 5991 Powertrain Relay Coil Control
P3 0.5 L-BU/WH 6311 Brake Switch Signal
P4 0.35 D-GN/WH 465 Fuel Pump Relay Control - Primary (MYD)
P5 0.5 PK 439 Ignition Voltage
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 13513347
  • Service Connector: 19115659
  • Description: 50-Way F GT 280 Metri-Pack 800 Series (BK)

Terminal Part Information 
  • Pins: A1, B5, C5, D3, N1, P2-P5
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: Pins A1, B2, C3, C5, P2, P4: H/H
  • Core/Insulation Crimp: Pins D3, N1, P3, P5: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: C3, D3 (HP2), D4-D5, L1, L2, L4, L5, M1, M2, N1, N3-N4, P1-P3 (HP2), P5 (HP2)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins D3-D5, L1, L2, L4, N3-N4: E/A
  • Core/Insulation Crimp: Pins C3, L5, M2: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: F1
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: L3, M3-M5, N5
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: Pins L3, M3, M4, M5 - Pending
  • Core/Insulation Crimp: Pins N5 - 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 12: Fuse Block - Underhood X3
GM1665657Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X3

Pin Wire Circuit Function
A1 0.5 D-GN/WH 1335 Right Rear Turn Signal Lamp Supply Voltage (X88 or Z88 or EXP with E52)
0.5 D-GN 19 Right Rear Stop/Turn Lamp Supply Voltage (X88 without E52 or Z75 without EXP)
A2 0.5 YE/BK 1334 Left Rear Turn Signal Lamp Supply Voltage (X88 or Z88 or EXP with E52)
0.5 YE 18 Left Rear Stop/Turn Lamp Supply Voltage (X88 without E52 or Z75 without EXP)
A3 0.5 L-BU 20 Stop Lamp Supply Voltage (X88 or Z88 or EXP with E52)
A4 0.5 L-BU/BK 20 Stop Lamp Supply Voltage (X88 or Z88 or EXP with E52)
A5 0.5 RD/WH 1840 Battery Positive Voltage
A6 - - Not Used
A7 0.5 BN 2509 Left Rear Park Lamps Supply Voltage
A8 0.5 BN 2509 Left Rear Park Lamps Supply Voltage (without E52)
B1 3 RD/BK 2440 Battery Positive Voltage (Z55)
B2 3 RD/WH 2440 Battery Positive Voltage (G69)
B3 2 RD 1640 Battery Positive Voltage (JL4)
B4 0.8 BN 2109 Trailer Park Lamp Supply Voltage (EXP)
1 BN 2109 Trailer Park Lamp Supply Voltage (without EXP)
B5 1 GY 120 Fuel Pump Supply Voltage (L96)
C1 3 RD 1842 Battery Positive Voltage (G69)
C2 3 RD/BK 442 Battery Positive Voltage
D1 5 RD/BK 1742 Battery Positive Voltage (JH6)
D2 - - Not Used
E1 0.8 YE 1618 Trailer Left Rear Turn/Stop Lamp Supply Voltage (except HP2)
E2 0.8 L-GN 1624 Trailer Backup Lamps Supply Voltage (EXP)
1 L-GN 1624 Trailer Backup Lamps Supply Voltage (except EXP)
E3 0.5 L-GN 24 Backup Lamp Supply Voltage
0.5 L-GN 24 Backup Lamp Supply Voltage (except EXP)
E4 3 RD/WH 1940 Battery Positive Voltage (except L96)
E5 - - Not Used
F1 0.8 YE 1618 Trailer Left Rear Turn/Stop Lamp Supply Voltage
F2 0.8 D-GN 1619 Trailer Right Rear Turn/Stop Lamp Supply Voltage
F3-F4 - - Not Used
F5 0.5 PK 439 Ignition Voltage (without NQZ)
F6 - - Not Used
F7 0.5 BN 2609 Right Rear Park Lamps Supply Voltage
F8 0.8 GY 5185 Right Trailer Park Lamp (EXP)
Connector Part Information 
  • Harness Type: Chassis
  • OEM Connector: 13513342
  • Service Connector: 19115657
  • Description: 30-Way F GT 150 280 Metri-Pack 800 Series (BK)

Terminal Part Information 
  • Pins: A1-A8, B4 (HP2), E2-E3 (HP2), F1, F5, F7, F8
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pins A1-A8, E3, F5, F7: E/A
  • Core/Insulation Crimp: Pins B4, E2, F1, F5, F8: 2/A
  • Release Tool/Test Probe: 13515247/J-35616-2A (GY)
  • Pins: B1-B3, E4 (HP2)
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: Pins B1, B2, E4: F/D
  • Core/Insulation Crimp: Pin B3: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B4, B5, E1-E4
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins B4, B5, E1-E3: 2/A
  • Core/Insulation Crimp: Pin E4: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: C1-C2, D1
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 13: Fuse Block - Underhood X4
GM1665659Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X4

Pin Wire Circuit Function
A1 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Supply Voltage
A2 - - Not Used
A3 0.5 OG 2268 Windshield Washer Relay Control
A4-A6 - - Not Used
A7 0.35 WH 193 Rear Defog Relay Control
A8 - - Not Used
B1-B4 - - Not Used
B5 3 PU 293 Rear Defog Element Supply Voltage
C1 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage (HP2)
0.5 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage (except HP2)
C2 0.35 D-GN/WH 1317 Fog Lamp Relay Control (T96)
C3 0.35 TN/WH 1969 Headlamp High Beam Relay Control
C4-C8 - - Not Used
D1-D3 - - Not Used
D4 0.5 RD/WH 4440 Battery Positive Voltage
D5 - - Not Used
E1 5 RD/BK 842 Battery Positive Voltage
E2 5 RD/BK 642 Battery Positive Voltage (E61)
F1 3 RD/BK 1142 Battery Positive Voltage (BRS)
F2 5 RD/BK 542 Battery Positive Voltage
G1 0.35 TN 28 Horn Relay Control
G2 2 RD/WH 2340 Battery Positive Voltage
G3 2 RD/WH 3740 Battery Positive Voltage (UQA or UQS)
G4 - - Not Used
G5 0.8 RD/WH 4540 Battery Positive Voltage
H1 0.5 BN 2509 Left Rear Park Lamps Supply Voltage (E52)
H2-H3 - - Not Used
H4 0.35 L-GN/BK 592 Daytime Running Lamps (DRL) Relay Control (T61)
H5 0.5 D-GN/WH 1335 Right Rear Turn Signal Lamp Supply Voltage (X88 or Z88 or EXP with E52)
0.5 D-GN 19 Right Rear Stop/Turn Lamp Supply Voltage (X88 without E52 or Z75 without EXP)
H6-H8 - - Not Used
J1 2 RD/WH 3140 Battery Positive Voltage (with CF5 or with TRW)
J2-J3 - - Not Used
J4 0.35 RD/WH 2840 Battery Positive Voltage
0.35 RD/WH 2840 Battery Positive Voltage
J5 0.8 RD/WH 640 Battery Positive Voltage
0.8 RD/WH 640 Battery Positive Voltage
K1 0.35 L-GN 2270 Rear Window Washer Relay Control
K2 0.35 PK/WH 1970 Headlamp Low Beam Relay Control
K3-K4 - - Not Used
K5 0.5 YE/BK 1334 Left Rear Turn Signal Lamp Supply Voltage (X88 or Z88 or EXP with E52)
0.5 YE 18 Left Rear Stop/Turn Lamp Supply Voltage (X88 without E52 or Z75 without EXP)
K6-K8 - - Not Used
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13513329
  • Service Connector: 19115656
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)

Terminal Part Information 
  • Pins: E1, E2, F1, F2
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Pins: D4, G1, G5, J4
  • Terminated Lead: Pending
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins G1(VD1), G5, J4 - 2/A
  • Core/Insulation Crimp: Pins D4, G1(except VD1) - E/A
  • Pins: B5, G2, G3, J1, J5
  • Terminated Lead: Pending
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: Pins B5, G2, G3, J1 - F/D
  • Core/Insulation Crimp: J5 - 4/4
  • Pins: A1, A3, A7, C1-C3, H1, H4, H5, K1, K2, K5
  • Terminated Lead: 13575790
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pins A1, A3, A7, C2, C3, H1, H4, K1, K2, K5 - E/A
  • Core/Insulation Crimp: Pins C1, H5 - 2/A
Fig 14: Fuse Block - Underhood X5
GM1665658Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X5

Pin Wire Circuit Function
A1 - - Not Used
A2 0.5 L-BU/WH 6311 Brake Switch Signal
A3-A8 - - Not Used
B1 0.35 L-BU/WH 6311 Brake Switch Signal
0.35 L-BU/WH 6311 Brake Switch Signal
B2 0.5 RD/WH 740 Battery Positive Voltage (except HP2)
B3 1 RD/WH 340 Battery Positive Voltage
0.5 RD/WH 340 Battery Positive Voltage (without Y91)
B4 0.5 RD/WH 2640 Battery Positive Voltage (ULT, 7X6 or EXP)
B5 - - Not Used
C1-C3 - - Not Used
C4 0.35 OG 300 Ignition Voltage
C5 0.35 OG 300 Ignition Voltage
C6 0.35 OG 300 Ignition Voltage (ULT)
C7 - - Not Used
C8 0.35 D-BU 45 Park Lamp Relay Control (HP2)
0.5 D-BU 45 Park Lamp Relay Control (except HP2)
D1 0.35 RD/WH 540 Battery Positive Voltage
D2 0.35 RD/WH 3340 Battery Positive Voltage
D3 - - Not Used
D4 0.35 BN 141 Ignition Voltage (KA9)
D5 - - Not Used
E1 - - Not Used
E2 3 RD/BK 1242 Battery Positive Voltage (E61)
F1 3 RD/BK 1342 Battery Positive Voltage (NP0 or NQH)
3 RD/BK 1342 Battery Positive Voltage (NP0 or NQH)
F2 5 RD/BK 42 Battery Positive Voltage
G1 1 BK 550 Ground
G2 0.35 PK 1139 Ignition Voltage
G3 0.35 PK 239 Ignition Voltage
G4 0.35 PK 1639 Ignition Voltage
0.35 PK 1639 Ignition Voltage (without KA9)
G5 0.35 PK 739 Ignition Voltage
0.35 PK 739 Ignition Voltage
H1 0.35 OG 5186 Left Trailer Turn Signal Lamp
H2 0.35 YE 1618 Trailer Left Rear Turn/Stop Lamp Supply Voltage (EXP)
H3 0.35 YE 5187 Right Trailer Turn Signal Lamp
H4 0.35 D-GN 1619 Trailer Right Rear Turn/Stop Lamp Supply Voltage (EXP)
H5 0.35 YE 5199 Run/Crank Relay Coil Control
H6-H7 - - Not Used
H8 0.5 D-BU 38 Backup Lamp Relay Control
J1 1 PU 92 Windshield Wiper Motor High Speed Control
J2 1 D-GN 95 Windshield Washer Switch Signal
J3 1 L-BU 6128 Rear Closure Unlatch Motor Unlatch Control (E52)
J4 - - Not Used
J5 0.35 PK 839 Ignition Voltage
K1 0.35 TN 860 Front Windshield Wiper Switch High Signal
K2 - - Not Used
K3 0.35 GY 91 Windshield Wiper Switch Signal 2
K4 0.35 D-GN 5706 Endgate Latch Relay Supply Voltage (E52)
K5 1 L-BU 20 Stop Lamp Supply Voltage/Stop Lamp Switch Signal
K6-K7 - - Not Used
K8 0.35 YE 5704 Endgate Latch Relay Coil Control (E52)
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13513345
  • Service Connector: 19115658
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (GY)

Terminal Part Information 
  • Pins: A2, B1, C4-C8, D1-D2 (HP2), G2-G3 (HP2), G4, G5, H1-H8, J1-J3 (HP2), J5 (HP2), K1-K8
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pins A2, B1 (HP2), C4-C8, D1-D2 (HP2), G2-G5 (HP2), H1-H8, J5, K1-K4, K8: E/A
  • Core/Insulation Crimp: Pins B1, G1 (HP2), G4, G5, J1-J3 (HP2), K5: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: B3, F1 (HP2)
  • Terminal/Tray: 12092445/18
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: B3, B4, D1-D4, G1-G3, J1-J5
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins B4, D1-D4, G2, G3, J5: E/A
  • Core/Insulation Crimp: Pins B3, G1, J1-J3: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: E1, E2, F1, F2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: Pins E1, E2, F2: F/G
  • Core/Insulation Crimp: Pin F1: G/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 15: Fuse Block - Underhood X6
GM1665661Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X6

Pin Wire Circuit Function
A 19 RD/BK 2 Battery Positive Voltage
Fuse Block - Underhood X7

Terminal Part Information 
  • Harness Type: Chassis
  • Terminal: 12103506
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Underhood X7

Pin Wire Circuit Function
1 3 RD/BK 242 Battery Positive Voltage
Fuse Block - Underhood X8

Terminal Part Information 
  • Harness Type: Chassis
  • Terminal: 12162099
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Underhood X8

Pin Wire Circuit Function
1 3 RD/BK 742 Battery Positive Voltage
Fuse Holder (Battery Positive Cable) (except HP2)

Terminal Part Information 
  • Harness Type: Battery Positive Cable
  • Terminal: 00010584
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Holder (Battery Positive Cable) (except HP2)

Pin Wire Circuit Function
+ 19 RD/BK 2 Battery Positive Voltage
Fuse Holder (Generator Cable) (except HP2)

Terminal Part Information 
  • Harness Type: Generator Cable
  • Terminal: 00010375
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Holder (Generator Cable) (except HP2)

Pin Wire Circuit Function
+ 19 RD/BK 2 Battery Positive Voltage
Fuse Holder (Starter Cable Harness) (except HP2)

Terminal Part Information 
  • Harness Type: Starter Cable
  • Terminal: 00010584
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Holder (Starter Cable Harness) (except HP2)

Pin Wire Circuit Function
+ 32 RD 1 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Battery Cable
  • OEM Connector: 15488459
  • Service Connector: Service by Harness - See Part Catalog
  • Description: 1-Way F High Power Series (BK)
Terminal Part Information 
  • Terminal/Tray: Service by Harness - See Part Catalog
  • Core/Insulation Crimp: Not Available
  • Release Tool/Test Probe: Not Available
Fig 16: Fuse Block - I/P Label
GM1666257Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - I/P FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 REAR SEAT Fuse 20A Folding Seat Motor - Left Rear (ARS), Folding Seat Motor - Right Rear (ARS), Heated Seat Module - Rear (KA6)
2 AUX PWR2 Fuse 20A Auxiliary Power Outlet - Rear (E52 or TB7), Auxiliary Power Outlet - Center Seat (AZ3 or A95)
3 SWC BKLT Fuse 2A Steering Wheel Control Switch - Left, Steering Wheel Control Switch - Right
4 DDM Fuse 15A Driver Door Module (DDM)
5 CTSY Fuse 15A Body Control Module (BCM)
6 LT STOP TRN Fuse 15A Body Control Module (BCM)
7 DIM Fuse 10A Body Control Module (BCM)
8 RT STOP TRN Fuse 15A Body Control Module (BCM)
9 PDM Fuse 15A Garage Door Opener (GDO) (UG1), Inside Rearview Mirror (ISRVM), Passenger Door Module (PDM), Roof Beacon Switch (5G4)
10 UNLCK2 Fuse 15A Endgate Lock Actuator
11 LCK2 Fuse 15A Endgate Lock Actuator
12 STOP LAMPS Fuse 15A Body Control Module (BCM)
13 REAR HVAC Fuse 30A Blower Motor Control Module - Auxiliary
14 PWR MIR Fuse 2A Not Used
15 BCM Fuse 10A Body Control Module (BCM)
16 AUX PWR Fuse 20A Accessory Power Outlet - Center Console Compartment (D07), Accessory Power Outlet - Center Console (D07), Accessory Power Outlet - I/P 2 (X88 or Z88)
17 IS LPS Fuse 10A Body Control Module (BCM)
18 UNLCK1 Fuse 15A Door Latch Assembly - Left Rear, Door Latch Assembly - Right Rear
19 RSE Fuse 5A Video Display - Front (U42), Video Display - Rear (U42 with DNU)
20 OBS DET Fuse 10A Liftgate Module (LGM) (E61), Rear Object Sensor Control Module (UD7)
21 LCK 1 Fuse 15A Door Latch Assembly - Left Rear, Door Latch Assembly - Right Rear
22 INFO Fuse 10A Vehicle Communication Interface Module (VCIM)
23 REAR WPR Fuse 25A Rear Window Wiper Motor (E52 or TB7)
24 COOLED SEATS Fuse 30A Climate Control Seat Module (KB6)
25 DSM Fuse 10A Memory Seat Module (AN3), Remote Control Door Lock Receiver (RCDLR)
26 DRV UNLCK Fuse 15A Not Used
- LT DR Circuit Breaker 25A Driver Door Module (DDM), Window Switch - Left Rear
NOTE: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
- LOCK/UNLOCK PCB Relay - LCK 1 Fuse, LCK 2 Fuse, UNLCK 1 Fuse, UNLCK 2 Fuse
Fig 17: Fuse Block - I/P, Top View
GM1991093Courtesy of GENERAL MOTORS CORP.
Fig 18: Fuse Block - I/P, Bottom View
GM1991091Courtesy of GENERAL MOTORS CORP.
Fig 19: Fuse Block - I/P X1
GM1667403Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P X1

Pin Wire Circuit Function
A1 0.8 TN 201 Left Front Speaker Output (+)
A2 0.8 GY 118 Left Front Speaker Output (-)
A3-A4 - - Not Used
A5 0.35 GY 1690 Automatic Day/Night Mirror Signal (with DL3 or with DR4)
A6 0.35 PK 1691 Low Reference (with DL3 or with DR4)
B1 - - Not Used
B2 0.5 RD/WH 2540 Battery Positive Voltage
B3 - - Not Used
C1 - - Not Used
C2 0.5 D-GN 5060 Low Speed GMLAN Serial Data
C3 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Supply Voltage (with DL3 or with DPN)
C4 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Supply Voltage (with DL3 or with DPN)
C5-C6 - - Not Used
D1 0.8 RD/WH 3040 Battery Positive Voltage
D2 0.8 RD/WH 2940 Battery Positive Voltage
E1 3 BK 1850 Ground
E2 0.5 RD/WH 240 Battery Positive Voltage
0.8 RD/WH 240 Battery Positive Voltage
E3 5 RD/BK 842 Battery Positive Voltage
F1 0.5 RD/BK 42 Battery Positive Voltage
F2 0.8 TN 294 Door Lock Actuator Unlock Control (without E52)
F3 0.5 RD/WH 3840 Battery Positive Voltage
G1 0.8 GY 295 Door Lock Actuator Lock Control (without E52)
G2 0.8 RD/WH 1040 Battery Positive Voltage
0.8 RD/WH 1040 Battery Positive Voltage (X88 or Z88)
H1-H4 - - Not Used
H5 0.5 RD/WH 1540 Battery Positive Voltage (U42)
H6 0.5 RD/WH 3240 Battery Positive Voltage (UE1)
J1 0.8 RD/WH 2740 Battery Positive Voltage
J2 0.8 RD/WH 2240 Battery Positive Voltage
J3 0.5 RD/WH 2140 Battery Positive Voltage
K1 0.35 BN 6136 LED Dimming Supply Voltage
K2 0.35 YE 6817 LED Backlight Dimming Control
K3-K6 - - Not Used
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13552254
  • Service Connector: 19178190
  • Description: 40-Way F GT 150 280 Metri-Pack 800 Series (BK)

Terminal Part Information 
  • Pins: A1-A6, C2-C4, H5, H6, K1, K2
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins A1, A2: C/A
  • Core/Insulation Crimp: Pins A5, A6, C2-C4, H5, H6, K1, K2: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: E3, F1
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: E1
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B2, E2, D1, D2, F2, F3, G1, G2, J1-J3
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B2, E2 - E/A
  • Core/Insulation Crimp: Pins D1, D2, F2, F3, G1, G2, J1-J3 - 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 20: Fuse Block - I/P X2
GM1667401Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P X2

Pin Wire Circuit Function
A1 0.8 RD/WH 6040 Battery Positive Voltage (E52)
0.8 RD/WH 6040 Battery Positive Voltage (AZ3 or A95)
A2-A3 - - Not Used
A4 2 RD/WH 2040 Battery Positive Voltage
A5-A6 - - Not Used
A7 2 RD/WH 4740 Battery Positive Voltage (KB6)
B1 2 RD/WH 1240 Battery Positive Voltage
B2-B3 - - Not Used
B4 0.8 RD/WH 4840 Battery Positive Voltage (ARS and/or KA6)
0.8 RD/WH 4840 Battery Positive Voltage (ARS)
B5 0.35 RD/WH 840 Battery Positive Voltage (UD7)
B6 0.35 RD/WH 840 Battery Positive Voltage (E61)
B7 0.35 RD/WH 1140 Battery Positive Voltage
0.5 RD/WH 1140 Battery Positive Voltage (AN3 or HP2 with AG1)
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 15467621
  • Service Connector: 19115663
  • Description: 14-Way F GT 150 280 Series (GY)

Terminal Part Information 
  • Pins: A1 (AN3), B4 (without HP2), B7
  • Terminated Lead: 13575753
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins A1, B4, B7 (AN3) - 2/A
  • Core/Insulation Crimp: Pins B7 (without AN3) - E/A
  • Pins: A1 (without AN3), B4 (HP2)
  • Terminated Lead: Pending
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
  • Pins: A4, A7, B1
  • Terminated Lead: Pins A4 - 13575754
  • Terminated Lead: Pins A7, B1 - 13575756
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: Pins A4 - 4/4
  • Core/Insulation Crimp: Pins A7, B1 - F/D
  • Pins: B5, B6
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: C/A
Fig 21: Fuse Block - I/P X3
GM1667399Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P X3

Pin Wire Circuit Function
A1 - - Not Used
A2 0.35 L-BU 195 Door Lock Control
A3 0.35 WH 194 Door Unlock Control
A4-A6 - - Not Used
A7 3 RD/WH 1740 Battery Positive Voltage
B1 0.8 TN 294 Door Lock Actuator Unlock Control
0.8 TN 294 Door Lock Actuator Unlock Control
B2-B3 - - Not Used
B4 0.8 GY 295 Door Lock Actuator Lock Control
0.8 GY 295 Door Lock Actuator Lock Control
B5-B7 - - Not Used
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 15467620
  • Service Connector: 19115662
  • Description: 14-Way F GT 150 280 Series (BK)

Terminal Part Information 
  • Pins: A2, A3
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A7
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B1, B4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 22: Fuse Block - I/P X4
GM1667402Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P X4

Pin Wire Circuit Function
A1 2 RD/WH 1240 Battery Positive Voltage
A2 0.35 D-GN 5060 Low Speed GMLAN Serial Data
A3-A4 - - Not Used
A5 0.35 PK 1691 Low Reference (DL3 or DR4)
A6-A7 - - Not Used
B1 3 BK 1850 Ground
B2 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Supply Voltage (DL3 or DPN)
B3 0.5 D-GN 5060 Low Speed GMLAN Serial Data
B4 0.8 RD/WH 140 Battery Positive Voltage
B5 0.5 GY 118 Left Front Speaker Output (-) (UQ3)
0.8 GY 118 Left Front Speaker Output (-) (UQA/UQS)
B6 0.5 TN 201 Left Front Speaker Output (+) (UQ3)
0.8 TN 201 Left Front Speaker Output (+) (UQA/UQS)
B7 0.35 GY 1690 Automatic Day/Night Mirror Signal (DL3 or DR4)
Connector Part Information 
  • Harness Type: Driver Door
  • OEM Connector: 15467622
  • Service Connector: 19115664
  • Description: 14-Way F GT 150 280 Series (L-GY)

Terminal Part Information 
  • Pins: A5, B2, B3, B5, B6
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins A5, B2, B3, B5-B6 (UQ3): E/C
  • Core/Insulation Crimp: Pins B5-B6 (UQA/UQS): C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A1, B1
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: Pin A1: 4/4
  • Core/Insulation Crimp: Pin B1: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B4, B7
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pin B4: 2/A
  • Core/Insulation Crimp: Pin B7: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 23: Junction Block - Left I/P Label
GM1666260Courtesy of GENERAL MOTORS CORP.
JUNCTION BLOCK - LEFT I/P FUSE AND RELAY IDENTIFICATION LEGEND

Fuse And Relay Description Rating Circuits
DRIVER SEAT 2 Circuit Breaker 25A Memory Seat Module (AN3), Seat Adjuster Switch - Driver (AG1 without AN3)
PASS SEAT 1 Circuit Breaker 25A Seat Adjuster Switch - Passenger, Seat Lumbar Switch - Passenger (AG2 or AN3)
PWR REAR WNDW Circuit Breaker 25A Not Used
RT DOORS Circuit Breaker 25A Door Lock/Window Switch - Passenger, Window Switch - Right Rear
AUX WDO Circuit Breaker 25A Memory Seat Module (N48)
NOTE: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
PARK ENABLE PCB Relay - Folding Seat Switch - Front (ARS), Folding Seat Switch - Left Rear (ARS), Folding Seat Switch - Right Rear (ARS), Multifunction Switch - I/P
ELECTRONIC ADJUSTABLE PEDALS Relay - Electronic Adjustable Pedal (EAP) Assembly (JF4 without AN3)
Fig 24: Junction Block - Left I/P, Top View
GM1991086Courtesy of GENERAL MOTORS CORP.
Fig 25: Junction Block - Left I/P, Bottom View
GM1857010Courtesy of GENERAL MOTORS CORP.
Fig 26: Junction Block - Left I/P X1
GM1665708Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X1

Pin Wire Circuit Function
A1 0.5 RD/WH 4440 Battery Positive Voltage
A2 - - Not Used
A3 0.35 PK 239 Ignition Voltage
0.35 PK 239 Ignition Voltage (NQH)
A4 0.35 PK 239 Ignition Voltage
0.35 PK 239 Ignition Voltage (HP2 or EXP)
A5 0.5 BK 2550 Ground (Y91 with U42)
0.5 BK 2550 Ground (Y91 with U42 or with UK6)
B1-B2 - - Not Used
B3 1 BK 2550 Ground
B4 0.5 GY 157 Cargo Lamp Supply Voltage
B5 - - Not Used
C1 0.35 PK 1639 Ignition Voltage
C2 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control
C3 0.5 BK 2550 Ground (Y91 with UE1)
0.5 BK 2550 Ground (Y91 with U2K)
C4-C5 - - Not Used
D1 2 RD/WH 1340 Battery Positive Voltage
D2 - - Not Used
D3 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control (CF5)
D4-D5 - - Not Used
E1-E2 - - Not Used
E3 0.5 BK/WH 1851 Ground
0.8 BK/WH 1851 Ground
F1 5 RD/BK 642 Battery Positive Voltage
G1 - - Not Used
H1 0.5 BK/WH 1851 Ground
0.5 BK/WH 1851 Ground
J1 - - Not Used
K1 0.5 BK/WH 1851 Ground
0.35 BK/WH 1851 Ground
K2 2 BK/WH 1851 Ground
K3 0.8 BK/WH 1851 Ground
0.8 BK/WH 1851 Ground (EXP or HP2)
L1 0.5 OG 6815 Inadvertent Power Control
L2 0.5 RD/WH 240 Battery Positive Voltage (with TQ5, TRW and/or UG1)
L3 0.35 PU/WH 6816 Indicator Dimming Control
L4 0.35 WH/BK 5515 Inside Air Temperature Sensor Assembly Control (CJ2)
L5 - - Not Used
M1 0.5 BN/WH 230 Instrument Panel Lamps Dimming Control (X88 or Z88)
0.5 BN/WH 230 Instrument Panel Lamps Dimming Control (NQH)
M2 0.35 PK 1691 Automatic Day/Night Mirror Low Reference
M3 0.35 PU/WH 6816 Indicator Dimming Control
0.5 PU/WH 6816 Indicator Dimming Control (Z75)
M4 0.35 D-GN 734 Inside Air Temperature Sensor Signal (CJ2)
M5 0.5 L-BU 1320 CHMSL Supply Voltage/Stop Lamp Supply Voltage
0.5 L-BU 1320 CHMSL Supply Voltage/Stop Lamp Supply Voltage (EXP)
N1 0.35 D-GN 6134 Linear Interconnect Network Bus
N2-N4 - - Not Used
N5 0.35 PK 1139 Ignition Voltage
P1 0.35 D-BU 38 Backup Lamp Relay Control
P2 0.35 GY 1690 Automatic Day/Night Mirror Signal (with DL3 or with DR4)
P3 0.35 PU/WH 6816 Indicator Dimming Control (NQH)
P4 - - Not Used
P5 0.35 D-GN 6101 Low Reference
0.35 D-GN 6101 Low Reference (CJ3)
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 15467568
  • Service Connector: 19115661
  • Description: 50-Way F GT 280 Metri-Pack 800 Series (GY)

Terminal Part Information 
  • Pins: F1
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: D1, K2
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A1-A5, B2-B4, C1-C4, D3, E3, G1, H1, K1, K3, L1-L4, M1-M4, N1-N5, P1-P5
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins A1-A5, B2, B4, C1-C4, D3, E1, H1, K1, L1-L4, M2-M4, N1-N5, P1-P5: E/A
  • Core/Insulation Crimp: Pins B3, E3, G1, K3: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 27: Junction Block - Left I/P X2
GM1665711Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X2

Pin Wire Circuit Function
A1 0.35 PK 739 Ignition Voltage
A2 0.35 YE 43 Accessory Voltage
0.35 YE 43 Accessory Voltage (6J1 and/or CF5)
A3-A4 - - Not Used
A5 0.8 RD/WH 1040 Battery Positive Voltage (with D07, except Y91)
B1 2 RD/WH 2340 Battery Positive Voltage
B2-B4 - - Not Used
B5 0.5 RD/WH 3240 Battery Positive Voltage (with U42 or with UE1, except Y91)
C1 - - Not Used
C2 2 BK 2550 Ground (Y91 with UQA or with UQS)
C3 0.5 RD/WH 340 Battery Positive Voltage (with UK6 and/or U2K, except Y91)
C4-C5 - - Not Used
D1 2 BK 1050 Ground
D2 - - Not Used
D3 0.8 RD/WH 4540 Battery Positive Voltage
0.8 RD/WH 4540 Battery Positive Voltage (EXP or 7X7)
D4-D5 - - Not Used
E1 0.5 OG/BK 5285 Adjustable Pedals Motor Rearward Control (JF4)
E2 0.5 RD/WH 740 Battery Positive Voltage (with 6J1, ARS and/or JF4)
E3 0.35 YE 6812 Park Enable Relay Control (with 6J1, ARS and/or JF4)
F1 - - Not Used
G1 0.35 PU 5286 Adjustable Pedals Motor Forward Control (JF4)
H1 0.35 D-GN/WH 817 Vehicle Speed Signal
0.5 D-GN/WH 817 Vehicle Speed Signal (Y91)
J1 - - Not Used
K1 0.5 YE 6817 LED Backlight Dimming Control (Z75)
K2 0.35 YE 6817 LED Backlight Dimming Control
0.35 YE 6817 LED Backlight Dimming Control (Z75)
K3 0.35 D-GN 5060 Low Speed GMLAN Serial Data
L1-L2 - - Not Used
L3 0.35 YE 6817 LED Backlight Dimming Control (UK3)
L4 0.35 YE 6817 LED Backlight Dimming Control
L5 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
M1-M2 - - Not Used
M3 0.35 YE 6817 LED Backlight Dimming Control
0.35 YE 6817 LED Backlight Dimming Control (CJ3)
M4 - - Not Used
M5 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
0.5 TN 2501 High Speed GMLAN Serial Data Bus -
N1 0.35 D-BU 2307 Passenger Air Bag On Indicator Control
N2-N3 - - Not Used
N4 0.35 YE 6817 LED Backlight Dimming Control
0.35 YE 6817 LED Backlight Dimming Control
N5 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
P1 0.35 PU 5234 Passenger Seat Belt Indicator Control
P2 - - Not Used
P3 0.5 D-GN 2308 Passenger Air Bag Off Indicator Control
P4 3 RD/WH 3740 Battery Positive Voltage (with UQA, except Y91)
P5 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 15467567
  • Service Connector: 19149284
  • Description: 50-Way F GT 280 Metri-Pack 800 Series (BK)

Terminal Part Information 
  • Pins: A1, A2, A5, B5, C3, D3, E1-E3, G1, H1, K1-K3, L3-L5, M3, M5, N1-N5, P1-P3, P5
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins A1, A2, B5, C3, E1-E3, G1, H1, K1-K3, L3-L5, M3, M5, N1-N5, P1-P5: E/A
  • Core/Insulation Crimp: Pin A5, D3: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B1, C2, D1, P4
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 28: Junction Block - Left I/P X3 (without Y91)
GM1665716Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X3 (without Y91)

Pin Wire Circuit Function
1 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
2 0.8 BK 1050 Ground (HP2)
3 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
4 0.35 YE 6817 LED Backlight Dimming Control (with UK6, except Y91)
5 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
6 3 RD/WH 3740 Battery Positive Voltage (UQA or UQS)
7 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
8 0.5 RD/WH 3740 Battery Positive Voltage (with UQA, except Y91)
Connector Part Information 
  • Harness Type: I/P Extension
  • OEM Connector: 13516840
  • Service Connector: 19149295
  • Description: 8-Way F GT 280 Series (GN)

Terminal Part Information 
  • Pins: 1-7
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins 1, 3, 5, 7 - E/A
  • Core/Insulation Crimp: Pins 2 - 2/A
  • Release Tool/Test Probe: 15315147/J-35616-4A (PU)
  • Pin: 8
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315147/J-35616-4A (PU)
Fig 29: Junction Block - Left I/P X4 (except Y91)
GM1665714Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X4 (except Y91)

Pin Wire Circuit Function
1 0.35 D-GN 5060 Low Speed GMLAN Serial Data
0.35 D-GN 5060 Low Speed GMLAN Serial Data (UE1, U2K or UK6)
2 0.5 RD/WH 340 Battery Positive Voltage (UK6)
0.5 RD/WH 340 Battery Positive Voltage (U2K)
3 0.8 D-GN/WH 817 Vehicle Speed Signal (U3R, U3U or UVB)
4 3 BK 2550 Ground (UQA)
5 0.5 BK 2550 Ground (UE1)
0.5 BK 2550 Ground (U2K)
6 0.5 RD/WH 3240 Battery Positive Voltage (UE1)
7 0.5 BK 2550 Ground (U42 or UK6)
8 0.8 RD/WH 1040 Battery Positive Voltage (D07)
Connector Part Information 
  • Harness Type: I/P Extension
  • OEM Connector: 13516829
  • Service Connector: 19115667
  • Description: 8-Way F GT 280 Series (OG)

Terminal Part Information 
  • Pins: 1-3, 5-8
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pin 1, 2, 5-7: E/A
  • Core/Insulation Crimp: Pins 3, 8: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pin: 4
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 30: Junction Block - Left I/P X7 (6J1 or JF4)
GM1665732Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X7 (6J1 or JF4)

Pin Wire Circuit Function
1 0.5 GY 6206 Low Reference (JF4)
2 1 YE 5129 Adjustable Pedal Actuator Rearward Control (JF4)
3 0.5 TN 6207 5-Volt Reference (JF4)
4 1 PU 5130 Adjustable Pedal Actuator Forward Control (JF4)
0.5 YE 143 Ignition Voltage (6J1)
5 0.5 PK 5289 Adjustable Pedal Sensor Signal (JF4)
6-8 - - Not Used
Connector Part Information 
  • Harness Type: Brake/Clutch
  • OEM Connector: 13516836
  • Service Connector: 19149294
  • Description: 8-Way F GT 280 Series (OG)

Terminal Part Information 
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins: 1, 3, 5: E/A
  • Core/Insulation Crimp: Pins: 2, 4: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 31: Junction Block - Left I/P X8
GM1665729Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X8

Pin Wire Circuit Function
1-2 - - Not Used
3 1 BK 1050 Ground
4 - - Not Used
5 0.35 PU 5234 Passenger Seat Belt Indicator (AL0)
6 0.35 D-BU 2307 Passenger Air Bag On Indicator Control (AL0)
7 0.35 D-GN/BK 2308 Passenger Air Bag Off Indicator Control (AL0)
8 0.35 D-GN 5060 Low Speed GMLAN Serial Data (TQ5)
Connector Part Information 
  • Harness Type: Headliner
  • OEM Connector: 13516835
  • Service Connector: 19149293
  • Description: 8-Way F GT 280 Series (GN)

Terminal Part Information 
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins 1, 4-8: E/A
  • Core/Insulation Crimp: Pin 3: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 32: Junction Block - Left I/P X9
GM1665720Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X9

Pin Wire Circuit Function
1 0.35 PK 1639 Ignition Voltage (DF5)
0.35 PK 1639 Ignition Voltage (YE9)
2 0.35 WH/BK 5515 Inside Air Temperature Sensor Assembly Control (CJ2)
3 - - Not Used
4 0.35 D-GN 734 Inside Air Temperature Sensor Signal (CJ2)
5 0.35 PK 1139 Ignition Voltage
6 - - Not Used
7 0.35 D-GN 6101 Low Reference
8 0.5 GY 157 Interior Lamp Dimming Control
Connector Part Information 
  • Harness Type: Headliner
  • OEM Connector: 13516831
  • Service Connector: 19149289
  • Description: 8-Way F GT 280 Series (BK)

Terminal Part Information 
  • Pins: 1
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 2-8
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 33: Junction Block - Left I/P X10
GM1665718Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X10

Pin Wire Circuit Function
1 0.5 RD/WH 240 Battery Positive Voltage (TQ5)
0.5 RD/WH 240 Battery Positive Voltage (TRW or UG1)
2 0.35 OG 6815 Inadvertent Power Control
3 0.35 PK 1691 Backup Lamp Relay Control (DF5)
4 0.35 BN/WH 230 Instrument Panel Lamp Control
0.35 BN/WH 230 Instrument Panel Lamp Control (CJ3 without UK6)
5 - - Not Used
6 0.35 D-GN 6134 Linear Interconnect Network Bus
7 0.35 GY 1690 Automatic Day/Night Mirror Signal (DL3 or DR4)
8 0.35 D-BU 38 Backup Lamp Control (DL3 or DR4)
Connector Part Information 
  • Harness Type: Headliner
  • OEM Connector: 13516830
  • Service Connector: 19149291
  • Description: 8-Way F GT 280 Series (GY)

Terminal Part Information 
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 34: Junction Block - Left I/P X11
GM1665725Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X11

Pin Wire Circuit Function
1 2 RD/WH 1340 Battery Positive Voltage
2 3 RD/WH 1440 Battery Positive Voltage (AG2)
3 0.35 PK 1639 Ignition Voltage
4 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control
0.5 BN/WH 230 Instrument Panel Lamp Dimming Control
5 0.35 D-BU 38 Backup Lamp Relay Control (UVC)
6 0.35 PK 1139 Ignition Voltage
7 0.5 RD/WH 4440 Battery Positive Voltage
0.5 RD/WH 4440 Battery Positive Voltage
8 0.5 RD/WH 4440 Battery Positive Voltage (ASF)
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13516833
  • Service Connector: 19115668
  • Description: 8-Way F GT 280 Series (L-GY)

Terminal Part Information 
  • Pins: 1, 2
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 1, 2 (HP2)
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: Pins 1 - 4/4
  • Core/Insulation Crimp: Pins 2 - F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3-8
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins 3, 5-6, 8: E/A
  • Core/Insulation Crimp: Pins 4, 7: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3-8 (HP2)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 35: Junction Block - Left I/P X12
GM1665727Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X12

Pin Wire Circuit Function
1 3 RD/WH 5040 Battery Positive Voltage
2 3 RD/WH 3440 Battery Positive Voltage (N48)
3 0.5 L-BU 1320 CHMSL Supply Voltage
4 0.5 YE/BK 5813 Park Enable Supply Voltage (ARS)
0.5 YE/BK 5813 Park Enable Supply Voltage (ARS)
5 0.5 GY 157 Interior Lamp Control (with LWB or without E52)
6 - - Not Used
7 0.35 PK 239 Ignition Voltage (KB6)
0.35 PK 239 Ignition Voltage (UVC)
8 3 BK 2550 Ground
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13516834
  • Service Connector: 19149292
  • Description: 8-Way F GT 280 Series (BN)

Terminal Part Information 
  • Pins: 1, 2, 8
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3-7
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins 3, 5-7: E/A
  • Core/Insulation Crimp: Pins 4: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 3, 7 (HP2)
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 36: Junction Block - Left I/P X13 (JF4 with AN3)
GM1665721Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X13 (JF4 with AN3)

Pin Wire Circuit Function
1 1 PU 5130 Adjustable Pedal Actuator Forward Control
2 1 YE 5129 Adjustable Pedal Actuator Rearward Control
3 0.35 PU 5286 Adjustable Pedals Motor Forward Control
4 0.35 OG/BK 5285 Adjustable Pedals Motor Rearward Control
5 - - Not Used
6 0.5 GY 6206 Memory Sensor Low Reference
7 0.5 TN 6207 Memory Sensor High Reference
8 0.5 PK 5289 Adjustable Pedal Sensor Signal
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13516832
  • Service Connector: 19149290
  • Description: 8-Way F GT 280 Series (D-BU)

Terminal Part Information 
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: Pins 1, 2: 2/A
  • Core/Insulation Crimp: Pins 3-8: E/A
  • Release Tool/Test Probe: J-38125-553/J-35616-4A (PU)
Fig 37: Junction Block - Left I/P X14 (5W4, AYE or SPO Accessory - Headrest DVD)
GM1665737Courtesy of GENERAL MOTORS CORP.
Junction Block - Left I/P X14 (5W4, AYE or SPO Accessory - Headrest DVD)

Pin Wire Circuit Function
1 BK 1050 Ground (AYE)
0.5 BK 1050 Ground (5W4)
2 RD 4540 Battery Positive Voltage (AYE)
3-6 - - Not Used
7 RD - Ignition Voltage (SPO Accessory - Headrest DVD)
0.5 PK 739 Ignition Voltage (5W4)
8 YE 43 Accessory Voltage
Connector Part Information 
  • Harness Type: Headrest DVD (AYE or SPO Accessory - Headrest DVD)
  • OEM Connector: 13516837
  • Service Connector: 13504592
  • Description: 8-Way F GT 280 Series (BK)

Terminal Part Information 
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 38: Junction Block - Right I/P, Top View
GM1991088Courtesy of GENERAL MOTORS CORP.
Fig 39: Junction Block - Right I/P X1 (Wire Entry)
GM1666267Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X1 (Wire Entry)

Pin Wire Circuit Function
2A1 0.5 RD/WH 1540 Battery Positive Voltage (U42 or DNU)
2A2 0.35 TN 481 Not Used
2A3 0.35 L-GN 482 Not Used
2A4 0.35 WH 2283 Rear Wiper/Washer Switch Supply Voltage (E52)
2A5-2A6 - - Not Used
2A7 3 BK 1050 Ground Bus
2B1 3 RD/WH 3140 Battery Positive Voltage (CF5 or TRW)
2B2 - - Not Used
2B3 0.35 YE 43 Accessory Voltage (CF5)
2B4 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control (CF5)
2B5 - - Not Used
2B6 0.5 BK 1050 Ground
2B7 0.35 OG 300 Ignition 3 Voltage (EXP with CF5)
3A1 0.8 D-GN 117 Right Front Speaker Output (-)
3A2 0.8 L-GN 200 Right Front Speaker Output (+)
3A3 - - Not Used
3A4 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control (with DL3 or with DPN)
0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control (with DL3 or with DPN)
3A5-3A6 - - Not Used
3A7 - - Ground Bus
3B1 0.35 D-GN 5060 Low Speed GMLAN Serial Data
3B2 0.8 RD/WH 240 Battery Positive Voltage
3B3 - - Not Used
3B4 2 RD/WH 1340 Battery Positive Voltage
3B5-3B7 - - Not Used
4A1 0.35 GY 598 5-Volt Reference
4A2 0.35 TN 520 Lower Right Air Temperature Sensor Signal (CJ2)
4A3 0.35 TN 518 Lower Left Air Temperature Sensor Signal (CJ2)
4A4 0.35 YE 1791 Low Reference
4A5 0.35 PU 1838 Recirculation Door Position Signal (CJ2)
4A6 0.35 GY/BK 754 Blower Motor Speed Control
4A7 - - Ground Bus
4B1 - - 5-Volt Reference Bus
4B2 0.35 D-BU 1199 Air Temperature Door Control
4B3 0.35 TN 2273 Mode Door Control
4B4 - - Not Used
4B5 0.35 YE/BK 713 Defrost/Heater Mode Valve Position Sensor Signal
4B6 0.35 L-BU 733 Air Temperature Door Position Signal
4B7 0.35 WH 2622 (except HP2)
5A 0.5 D-GN 6101 Low Reference
5B 0.35 PK 839 Ignition Voltage
0.35 PK 839 Ignition Voltage
5C 0.35 PK 839 Ignition Voltage
5D 0.35 D-BU 1646 Auxiliary Air Temperature Door Position Signal
5E 0.35 WH/BK 1236 Auxiliary Air Temperature Door Control
5F 0.35 D-GN 1614 Recirculation Door Control
6A 0.5 RD/BK 542 Battery Positive Voltage
6B 3 BK 1050 Ground
3 BK 1050 Ground
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13685107
  • Service Connector: Pending
  • Description: 48-Way F Metri-Pack 280 Series (BK)

Terminal Part Information 
  • Pins: 3A2, 3B2
  • Terminal/Tray: 15304702/19
  • Core/Insulation Crimp: 2/4
  • Release Tool/Test Probe: 15315247/J-35616-3 (GY)
  • Pins: 2A1, 2A4, 2B4, 3B1, 5A, 5C, 5D, 5E, 5F
  • Terminal/Tray: 15304722/8
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-5 (PU)
  • Pins: 2B1, 3A1, 3A4, 3B4, 5B
  • Terminal/Tray: 15304724/8
  • Core/Insulation Crimp: Pins 3A1, 3A4, 5B: 2/A
  • Core/Insulation Crimp: Pins 2B1, 3B4: C/D
  • Release Tool/Test Probe: 15315247/J-35616-5 (PU)
  • Pins: 2A2, 2A3, 2B3, 2B6, 2B7, 3A7, 4A1, 4A2, 4A3, 4A4, 4A5, 4A6, 4A7, 4B2, 4B3, 4B5, 4B6
  • Terminal/Tray: 15304701/19
  • Core/Insulation Crimp: Pins 2A2, 2A3, 2B3, 2B7, 3A7, 4A1, 4A2, 4A3, 4A4, 4A5, 4A6, 4A7, 4B2, 4B3, 4B5, 4B6, 5B: E/C
  • Core/Insulation Crimp: Pins 2B1, 3B4: C/D
  • Core/Insulation Crimp: Pins 2B6: E/4
  • Release Tool/Test Probe: 15315247/J-35616-3 (GY)
  • Pins: 6A, 6B
  • Terminal/Tray: 12066493/3
  • Core/Insulation Crimp: Pin 6A: B/G
  • Core/Insulation Crimp: Pin 6B: F/G
  • Release Tool/Test Probe: 12094430/J-35616-43 (RD)
Fig 40: Junction Block - Right I/P X2
GM1667401Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X2

Pin Wire Circuit Function
A1 0.5 RD/WH 1540 Battery Positive Voltage (U42)
A2-A3 - - Not Used
A4 0.35 WH 2283 Rear Wiper/Washer Switch Control (CE1)
A5-A6 - - Not Used
A7 2 BK 1050 Ground (CF5 or 5G4)
B1 2 RD/WH 3140 Battery Positive Voltage (with CF5 or with TRW)
B2 - - Not Used
B3 0.35 YE 43 Accessory Voltage (CF5)
B4 0.5 BN/WH 230 Instrument Panel Lamp Dimming Control (CF5)
B5 - - Not Used
B6 0.5 BK 1050 Ground (CE1)
B7 0.35 OG 300 Ignition 3 Voltage (EXP with CF5)
Connector Part Information 
  • Harness Type: A-Pillar
  • OEM Connector: 15467621
  • Service Connector: 19115663
  • Description: 14-Way F GT 150 280 Series (D-GY)

Terminal Part Information 
  • Pins: A1, A4, B4, B7
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A2, A3, B3, B6
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A7, B1
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 41: Junction Block - Right I/P X3
GM1667402Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X3

Pin Wire Circuit Function
A1 0.8 D-GN 117 Right Front Speaker Output (-)
A2 0.8 L-GN 200 Right Front Speaker Output (+)
A3 - - Not Used
A4 0.5 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage (with or DPN)
A5-A6 - - Not Used
A7 3 BK 1050 Ground
B1 0.5 D-GN 5060 Low Speed GMLAN Serial Data
B2 0.8 RD/WH 240 Battery Positive Voltage
B3 - - Not Used
B4 2 RD/WH 1340 Battery Positive Voltage
B5-B7 - - Not Used
Connector Part Information 
  • Harness Type: Passenger Door
  • OEM Connector: 15467622
  • Service Connector: 19115664
  • Description: 14-Way F GT 150 280 Series (L-GY)

Terminal Part Information 
  • Pins: A2, B2
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pin A2 (UQ3): E/C
  • Core/Insulation Crimp: Pins A2 (UQA/UQS), B2: C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A1, A4, B1
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins A1 (UQ3), A4, B1: E/A
  • Core/Insulation Crimp: Pin A1 (UQA/UQS): 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A7, B4
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: Pin A7: F/D
  • Core/Insulation Crimp: Pin B4: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 42: Junction Block - Right I/P X4
GM1667399Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X4

Pin Wire Circuit Function
A1 0.35 L-BU/BK 598 5-Volt Reference
0.35 L-BU/BK 598 5-Volt Reference
A2 0.35 GY/BK 520 Lower Right Air Temperature Sensor Signal (CJ2)
0.35 TN 552 Signal Return (CJ3)
A3 0.35 WH/BK 518 Lower Left Air Temperature Sensor Signal (CJ2)
A4 0.35 YE 1791 Low Reference
0.35 YE 1791 Low Reference
A5 0.5 PU 1838 Recirculation Door Position Signal (CJ2)
A6 0.35 PU/WH 754 Blower Motor Speed Control
A7 - - Not Used
B1 0.35 L-BU/BK 598 5-Volt Reference
0.35 L-BU/BK 598 5-Volt Reference (CJ2)
B2 0.35 D-BU 1199 Left Air Temperature Door Control (CJ2)
B3 0.35 TN 2273 Mode Door Control
B4 0.35 YE 1791 Low Reference
0.35 YE 1791 Low Reference (CJ2)
B5 0.35 L-GN 713 Mode Door Position Signal
B6 0.35 L-BU 733 Left Air Temperature Door Position Signal (CJ2)
B7 0.35 WH 2622 Evaporator Temperature Sensor Signal
Connector Part Information 
  • Harness Type: HVAC
  • OEM Connector: 15467620
  • Service Connector: 19115662
  • Description: 14-Way F GT 150 280 Series (BK)

Terminal Part Information 
  • Pins: A1, A4, B1, B4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A2, A3, A5, A6, B2, B3, B5, B6
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
Fig 43: Junction Block - Right I/P X5
GM646380Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X5

Pin Wire Circuit Function
A 0.5 BN 6101 Low Reference (CJ2)
0.5 BN 6101 Low Reference (CJ2)
B 0.35 BN 839 Ignition Voltage
0.35 BN 839 Ignition Voltage (C67 or CJ2)
C 0.35 BN 839 Ignition Voltage
0.35 BN 839 Ignition Voltage (CJ2)
D 0.35 D-BU 1646 Right Air Temperature Door Position Signal
E 0.35 WH/BK 1236 Right Air Temperature Door Control
F 0.35 D-GN 1614 Recirculation Door Control (C67 or CJ2)
Connector Part Information 
  • Harness Type: HVAC
  • OEM Connector: 15326900
  • Service Connector: 15306380
  • Description: 6-Way F GT 280 Series (BK)

Terminal Part Information 
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins A-C: 2/A
  • Core/Insulation Crimp: Pins D-F: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 44: Junction Block - Right I/P X6
GM493694Courtesy of GENERAL MOTORS CORP.
Junction Block - Right I/P X6

Pin Wire Circuit Function
A 3 RD 542 Battery Positive Voltage (CJ2)
5 RD 542 Battery Positive Voltage (CJ3)
B 5 BK 1050 Ground
Connector Part Information 
  • Harness Type: HVAC
  • OEM Connector: 12129939
  • Service Connector: 15306380
  • Description: 2-Way F Metri-Pack 630 Series (BK)

Terminal Part Information 
  • Terminal/Tray: 12084590/3
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
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