Restore Full Command of Your Hummer H2’s Electronics
Are you battling bizarre electrical issues in your 2003-2007 Hummer H2? Flickering lights, a non-responsive climate control, or a security system that randomly prevents your vehicle from starting are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating problems. This replacement BCM, part number 15137394, is the definitive, hassle-free solution. We pre-program it to your H2’s specific VIN, ensuring it works perfectly right out of the box, with no expensive dealership programming required.
A Technician’s Notebook: The H2 with a Mind of Its Own
I remember a 2005 Hummer H2 that came into my bay with a list of symptoms that had the owner at his wit’s end. The radio would turn on and off, the power locks worked intermittently, and the HVAC blower was dead. He’d already replaced the battery and checked fuses. After hooking up my scanner, I saw a handful of communication loss DTCs pointing to the BCM. These modules, especially on the GMT800 platform, are notorious for internal solder joint failures over time. We swapped in a VIN-programmed module, and in less than 10 minutes, every single issue was gone. It’s a common failure, but thankfully, it’s a very straightforward fix.
Common Signs of a Failing Hummer H2 BCM
If your vehicle is experiencing any of the following, a failing BCM is the likely culprit. Replacing your 2003-2007 Hummer H2 BCM can resolve these issues and restore proper function.
- ✔ Intermittent or non-working power windows, door locks, or interior/exterior lights.
- ✔ Climate control (HVAC) system failure or an erratic blower motor.
- ✔ The security or anti-theft system malfunctions, causing a no-start condition.
- ✔ An active airbag warning light on the dash, often accompanied by DTC B1001 (Option Configuration Error).
- ✔ Unpredictable behavior from windshield wipers or other electronic accessories.
- ✔ Multiple communication-related Diagnostic Trouble Codes (DTCs) stored in the system.
A Straightforward Guide to Installation
You don’t need to be a professional mechanic to install this part. The process is simple and typically takes just a few minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s systems.
- Locate the BCM: In the 2003-2007 Hummer H2, the Body Control Module is conveniently located on the left-hand (driver’s) side of the dashboard, typically accessible from underneath.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM and unbolt it from its mounting bracket. Secure the new module in place and firmly reconnect all wiring harnesses.
- Reconnect and Test: Reconnect the negative battery terminal. Start your H2 and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
- Post-Installation Note: In some cases, if the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key’ procedure. This syncs the new BCM with the airbag system. This is not always required.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for the following vehicles. It is interchangeable with part numbers 15116066, 15137393, 15137395, and others within the same family.
- HUMMER H2: 2003, 2004, 2005, 2006, 2007 (Located at LH Dash)
This module also fits a wide range of 2002-2007 GM trucks and SUVs, including the Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe, and GMC Sierra & Yukon models.
Frequently Asked Questions
2003-2007 Hummer H2 BCM
Is this a difficult part for a DIYer to replace?
Not at all. The is one of the easier modules to replace. With basic hand tools and our VIN programming, it’s a job most vehicle owners can complete in their own driveway in under 15 minutes.