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Home >> Cadillac >> 2008 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> Electrical >> Component Locations >> Wiring Systems And Power Management - Component Connector End View 5 Of 5 >> Transmission Control Module (TCM) (M30 or M70)
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Transmission Control Module (TCM) (M30 or M70)

Fig 1: Transmission Control Module (TCM) (M30 or M70) Connector End View
GM1530595Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM) (M30 or M70)

Pin Wire Color Circuit Function
1 0.5 BN 418 TCC PWM Solenoid Valve Control
2 0.5 L-GN 1222 1-2 Shift Solenoid Valve Control
3 0.35 OG 1983 Input Shaft Speed
(ISS) Signal
4 - - Not Used
5 0.35 OG/BK 6399 Replicated TOS Signal
6 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
7 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
8-10 - - Not Used
11 0.35 D-BU 5985 Accessory Wake Up Serial Data
12-13 - - Not Used
14 0.5 WH 687 3-2 Shift Solenoid Valve Control
15 - - Not Used
16 0.5 L-GN/BK 822 VSS High Signal
17 0.5 L-BU/WH 1229 PC Solenoid Valve Low Control
18-19 - - Not Used
20 0.5 YE/BK 1223 2-3 Shift Solenoid Valve Control
21-22 - - Not Used
23 0.35 GY 773 Transmission Range Switch Signal C
24 0.35 PK 1224 Transmission Fluid Pressure Switch Signal A
25 0.5 TN/BK 422 TCC Solenoid Valve Control
26-28 - - Not Used
29 0.35 TN/WH 771 Transmission Range Switch Signal A
30 0.35 TN 2762 Low Reference
31 0.5 PK 2139 Ignition Voltage
32 0.5 RD/WH 1840 Battery Positive Voltage
33 0.35 OG 1226 Transmission Fluid Pressure Switch Signal C
34 - - Not Used
35 0.5 YE/BK 1227 Transmission Fluid Temperature (TFT) Sensor Signal
36 - - Not Used
37 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
38 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
39 0.35 WH 776 Transmission Range Switch Signal P
40 0.5 OG/BK 1228 Pressure Control (PC) Solenoid Valve High Control
41 0.5 PU/WH 821 VSS Low Signal
42 0.5 L-BU/WH 6311 Brake Switch Signal
43 - - Not Used
44 0.35 D-BU 1225 Transmission Fluid Pressure Switch Signal B
45 0.35 L-BU 1984 Low Reference
46 0.35 YE 772 Transmission Range Switch Signal B
47-48 - - Not Used
49 0.8 BK/WH 451 Ground
Connector Part Information 
  • OEM: 15463921
  • Service: 89046898
  • Description: Conn 49-Way F Micro-64 GT 280 Series Sealed (BK)

Terminal Part Information 
  • Terminal/Tray: 15304719/19
  • Core/Insulation Crimp: Pins: 1-3, 5-7, 11, 14, 16, 17, 20, 23-25, 29-33, 35, 37-42, 44-46: E/5
  • Core/Insulation Crimp: Pins: 49: 2/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
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