2006 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Body Control Module (BCM) C4

Fig 1: Body Control Module (BCM) C4 Connector End View
GM130690Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) C4 Connector Parts Information

Connector Part Information 
  • OEM: 12110206
  • Service: See Catalog
  • Description: 24-Way F Micro-Pack 100 Series (L-BU)
Terminal Part Information 
  • Pins: A1 - A4, A7, A8, A12, B3, B6, B7, B9
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
Body Control Module (BCM) C4 Connector 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 WH 530 Ignition 0 Voltage
A4 PK 39 Ignition 1 Voltage
A5-A6 - - Not Used
A7 L-BU 1134 Park Brake Switch Signal
A8 GY 1524 Backup Lamp Signal
A9-A11 - - Not Used
A12 WH 103 Headlamp Switch Headlamps On Signal
B1-B2 - - Not Used
B3 YE 43 Accessory Voltage
B4-B5 - - Not Used
B6 GY/BK 2226 Low Reference
B7 BK 279 Low Reference
B8 - - Not Used
B9 D-BU/WH 1495 Courtesy Lamps On Signal
B10-B12 - - Not Used
Factory Service Tools

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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.

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