2007 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the body control module (BCM).
  • Always disconnect the black body wiring harness connector FIRST and the gray instrument panel (I/P) wiring harness connector LAST.
  • Always connect the black body wiring harness connector FIRST and the gray I/P wiring harness LAST.
  • Do not open the BCM housing. The module does not have any serviceable components. The module may be replaced only as an assembly.
    Fig 1: View Of Body Wiring Harness Electrical Connector
    GM1283827Courtesy of GENERAL MOTORS CORP.
  1. Ensure the ignition switch is in the OFF position.
  2. Remove the right front hinge pillar trim panel. Refer to Trim Panel Replacement - Right Hinge Pillar in Interior Trim.
  3. Disconnect the body wiring harness electrical connector (1) from the BCM.
    4. Fig 2: View Of I/P Wiring Harness Electrical Connector
    GM1283829Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the I/P wiring harness electrical connector (1) from the BCM.
    5. Fig 3: View Of Detached Body Wiring Harness Electrical Connector
    GM1283832Courtesy of GENERAL MOTORS CORP.
  5. Release the fastener retaining the body wiring harness electrical connector to the BCM.
    6. Fig 4: View Of BCM
    GM1283835Courtesy of GENERAL MOTORS CORP.
  6. Remove the 2 fasteners retaining the BCM to the hinge pillar.
  7. Remove the BCM from the hinge pillar by unlocking the integral tab.
  8. Remove the BCM from the vehicle.
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.