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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 901 (DATA COMMUNICATION SYSTEM)COMPONENT LOCATORDATA COMMUNICATION CONNECTORSBODY CONTROL MODULE (BCM) - C4
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30

Body Control Module (BCM) - C4

2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Body Control Module (BCM) - C4
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2007 GMC Savana Special, 2007 GMC Savana Camper Special, 2007 GMC Savana, 2007 Chevrolet RV Cutaway, and 2007 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module (BCM) - C4 Connector End View
GM130690Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) - C4 Connector & Terminal Parts Information

Connector Part Information 
  • OEM: 12110206
  • Service: 12110206
  • Description: 24-Way F Micro-Pack 100 Series (L-BU)
Terminal Part Information 
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
Body Control Module (BCM) - C4 Terminal Identification

Pin Wire Color Circuit No. Function
A1 L-GN 80 Key In Ignition Switch Signal
A2 YE 307 Headlamp Switch Flash to Pass Signal
A3 PK 1020 Ignition 0 Voltage
A4 PK 39 Ignition 1 Voltage
A5 L-GN 1177 Door Open Switch Signal
A6 - - Not Used
A7 L-BU 1134 Park Brake Switch Signal
A8-A9 - - Not Used
A10 YE/BK 1181 Rear Door Open Switch Signal (Passenger/Cargo)
A11 - - Not Used
A12 WH 103 Headlamp Switch Headlamps On Signal
B1-B2 - - Not Used
B3 YE 343 Accessory Voltage
B4 TN 126 Left Front Door Open Switch Signal
B5 L-BU 195 Door Lock Control (AU3)
B6 GY/BK 2226 Dimming Return
B7-B8 - - Not Used
B9 D-BU/WH 1495 Courtesy Lamps On Signal
B10 WH 194 Door Unlock Control (AU3)
B11-B12 - - Not Used
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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.