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Body Control Module (BCM) X4 Connector End View

Fig 1: Body Control Module (BCM) X4 Connector End View
GM1664499Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X4

Pin Wire Circuit Function
1 0.8 RD/WH 1540 Battery Positive Voltage
2 0.8 RD/WH 1340 Battery Positive Voltage
3 0.8 RD/WH 1840 Battery Positive Voltage
4 0.8 RD/WH 1440 Battery Positive Voltage
5 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Supply Voltage/Right Turn Signal Indicator Lamp Supply Voltage
6 0.35 D-GN 6134 Local Interconnect Network 3
7 0.35 YE 196 Windshield Wiper Motor Park Switch Signal
8 - - Not Used
9 0.35 BK/WH 451 Ground
10 0.35 RD/WH 140 Battery Positive Voltage
11 0.35 D-GN/WH 1317 Fog Lamp Relay Control/Front Fog Lamp Relay and Indicator Control (T3U)
12 0.35 D-GN 319 Right Rear Trailer Stop/Turn Lamp Supply Voltage (V2S)
13 0.35 YE 318 Left Rear Trailer Stop/Turn Lamp Control (V2S)
14 - - Not Used
15 0.35 OG 2268 Windshield Washer Relay Control
16 0.35 TN/WH 1969 Headlamp Relay Control/Headlamp High Beam Relay Control
17 0.35 PU 5531 Hood Closed Switch Signal (BTV)
18-19 - - Not Used
20 0.35 YE 1977 Rear Fog Lamp Relay Control/Rear Fog Lamp Relay and Indicator Control (T79)
21 0.35 PK 139 Ignition 1 Voltage
22 - - Not Used
23 0.35 D-BU 545 DRL Supply Voltage (T4F without T94 or TB8)
24 - - Not Used
25 0.35 WH 1080 Park Lamp Relay Control (T90)
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 15482792
  • Service Connector: 88988841
  • Description: 25-Way F HIT Series (BK)
Terminal Part Information 
  • Pins: 1-5
  • Terminated Lead: 13327199
  • Release Tool: J-38125-12A
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: SNAC-A061T-M2.8/20
  • Core/Insulation Crimp: E/A
  • Pins: 6, 7, 9-11, 14-21, 23, 25
  • Terminated Lead: SEALED: 13576402 UNSEALED: 13575870
  • Release Tool: J-38125-12A
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: SNAC3-A021T-M0.64/20
  • Core/Insulation Crimp: J/J