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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 131 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSBODY CONTROL MODULE (BCM) X3
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Body Control Module (BCM) X3

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Body Control Module (BCM) X3
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module (BCM) X3 Connector End View
GM1362564Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X3

Pin Wire Circuit Function
A1 0.35 TN 294 Door Lock Actuator Unlock Control
A2 0.35 TN 294 Door Lock Actuator Unlock Control
0.35 TN 294 Door Lock Actuator Unlock Control
A3 0.35 OG 1732 Courtesy Lamps Supply Voltage
A4 0.35 GY 295 Door Lock Actuator Lock Control
0.35 GY 295 Door Lock Actuator Lock Control
A5 0.35 GY/BK 295 Door Lock Actuator Lock Control
0.35 GY/BK 295 Door Lock Actuator Lock Control
A6 0.35 PK 1139 Ignition 1 Voltage
A7 0.35 BN 9 Park Lamp Supply Voltage
A8 0.35 PK 339 Ignition 1 Voltage
A9 0.35 YE 18 Left Rear Stop/Turn Lamp Supply Voltage
A10 0.35 GY 157 Courtesy Lamp Control
A11 0.35 D-BU 1307 Power Window Master Switch Lockout Signal
A12 3 D-GN 19 Right Rear Stop/Turn Lamp Supply Voltage
B1 0.35 TN 694 Driver Door Lock Actuator Unlock Control
B2-B4 - - Not Used
B5 0.35 BN 4 Accessory Voltage
0.35 BN 4 Accessory Voltage
B6-B7 - - Not Available
B8-B10 - - Not Used
B11 3 D-BU 1307 Power Window Master Switch Lockout Signal
B12 0.35 GY 8 Instrument Panel Lamp Supply Voltage
C1-C2 - - Not Available
C3 0.35 YE 243 Accessory Voltage (Except SS)
0.35 YE 243 Accessory Voltage (Except SS)
C4 - - Not Used
C5 5 YE 343 Accessory Voltage
C6-C7 - - Not Available
C8-C10 - - Not Used
C11 3 D-BU 1307 Power Window Master Switch Lockout Signal
C12 0.35 OG 228 Windshield Washer Pump Control
D1 5 RD/BK 342 Battery Positive Voltage
D2 - - Not Available
D3 0.35 YE 243 Accessory Voltage
0.35 YE 243 Accessory Voltage (C25)
D4 0.35 RD/WH 640 Battery Positive Voltage
D5 3 YE 343 Accessory Voltage
D6 0.35 D-GN 591 Ignition 1 Voltage
D7-D9 - - Not Used
D10 3 RD/BK 442 Battery Positive Voltage
D11 0.35 RD/WH 1340 Battery Positive Voltage
D12 3 RD/BK 242 Battery Positive Voltage
Connector Part Information 
  • OEM: 15492675
  • Service: 88988613
  • Description: 41-Way F Metri-Pack Mixed (RD)
Terminal Part Information 
  • Pins: A1-A10, A12, B1, B5, B12, C3, C9, C12, D3-D4, D11
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: Pins A1-A2, A4-A5, A9, A12, B1 - E/A
  • Core/Insulation Crimp: Pins A3, A6-A8, A10, B5, B12, C3, C9, C12, D3-D4, D11 - E/C
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A11, B11, C5, C11, D1, D5-D6, D10, D12
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: C12
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.