2006 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Body Control Module (BCM) C2

Fig 1: Body Control Module (BCM) C2 Connector End View
GM73156Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 12110088
  • Service: 15306210
  • Description: 24-Way F Micro-Pack 100 Series (WH)
Terminal Part Information 
  • Pins: A2 - A4, A6, A8, A11, A12, B1 - B12
  • 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) C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 D-BU 1796 Steering Wheel Controls Supply Voltage
A3 TN/BK 254 Rear Door Unlock Relay Control
A4 PK/WH 1970 Headlamp Low Beam Relay Control
A5 - - Not Used
A6 GY/BK 255 Rear Door Lock Relay Control
A7 - - Not Used
A8 WH 193 Rear Defog Relay Control
A9-A10 - - Not Used
A11 RD/WH 812 12-Volt Reference
A12 OG 1140 Battery Positive Voltage
B1 BK/WH 1969 Headlamp High Beam Relay Control
B2 WH 1080 Park Lamp Relay Control
B3 D-BU 1353 RAP Supply Voltage
B4 L-GN/BK 592 DRL Relay Control
B5 PU 359 DRL Off Indicator Control
B6 BK/WH 1851 Ground
B7 BK 1835 Low Reference
B8 PK 1348 Headlamp On Indicator Control
B9 BK 28 Horn Relay Control
B10 WH 1304 Liftgate Lock Relay Control (Except SUT)
B11 GY 1056 5-Volt Reference
B12 L-GN 1037 Class 2 Serial Data
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.