If you’re tired of chasing down bizarre electrical gremlins in your Hummer H2, you’ve come to the right place. As a technician with over two decades of experience, I know how frustrating a faulty Body Control Module (BCM) can be. It’s the electronic brain for your vehicle’s comfort and security features, and when it fails, it can cause a cascade of confusing problems. This OEM-quality Body Control Module, part number 15137393, is the definitive solution for restoring your vehicle’s functionality and your peace of mind.
The most significant advantage of this module is that it arrives at your door fully programmed to your Hummer’s specific Vehicle Identification Number (VIN). This eliminates the need for an expensive and time-consuming trip to the dealership for programming. It’s a true plug-and-play repair that both professional mechanics and capable DIYers can appreciate. By installing this module, you’re not just replacing a part; you’re resolving the root cause of issues like erratic interior lights, unresponsive power locks, and intermittent HVAC systems.
From the Diagnostic Bay: The Case of the Phantom Electrical Issues
I remember a 2006 Hummer H2 that came into my shop with a laundry list of complaints. The owner was convinced he had multiple bad switches and wiring shorts. The radio would turn off randomly, the driver’s side window worked only when it wanted to, and the security light would flash, sometimes preventing the truck from starting. He had already spent a fair amount of money replacing a window switch to no avail. After a quick scan, I saw a handful of communication codes and a B1001 ‘Option Configuration Error’ from the BCM. Instead of hours of wiring diagnostics, we started with the central component. We installed a VIN-programmed 2003-2007 Hummer H2 BCM, and within 10 minutes, every single one of his ‘phantom’ issues was gone. It’s a classic example of how a single failing module can mimic a dozen different problems.
Is Your Hummer H2 Showing These Electrical Faults?
✔ Intermittent or non-functional power windows, door locks, or mirrors.
✔ HVAC climate control or blower motor operating erratically or not at all.
✔ The security system acting up, causing a no-start condition or false alarms.
✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
✔ Interior or exterior lights (headlights, dome lights) staying on or not turning on.
✔ Problems with the windshield wipers or radio functions.
A Straightforward Guide to Your BCM Replacement
✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
✔ Locate the Module: In the 2003-2007 Hummer H2, the BCM is typically found on the left-hand side of the dashboard, under the steering column.
✔ Swap the Part: Carefully disconnect the wiring harnesses from the old BCM. They use locking tabs, so be gentle. Remove any mounting bolts or clips holding the old module and install the new one in its place.
✔ Reconnect and Test: Securely plug the wiring harnesses into your new, pre-programmed BCM. Reconnect the battery terminal. Start the vehicle and test all related functions—windows, locks, lights, wipers, and HVAC—to confirm the repair.
Post-Installation Note: In some cases, an airbag light may persist. This typically requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems. This is a simple procedure for any well-equipped shop. There is no core charge for this part, so you can keep your old module without any hassle.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15137393 and is also interchangeable with several other GM part numbers, ensuring a perfect fit for a wide range of vehicles. While this page is dedicated to the 2003-2007 Hummer H2 BCM, it also fits:
✔ Hummer H2: 2003-2007
✔ Cadillac Escalade, ESV, EXT: 2003-2006
✔ Chevrolet Avalanche, Silverado, Suburban, Tahoe: 2003-2007 (Classic body style for 2007)
✔ GMC Sierra, Yukon, Yukon XL: 2003-2007 (Classic body style for 2007)
✔ Chevrolet Express & GMC Savana Vans: 2004-2007 (with tradesman package opt PRP)
Frequently Asked Questions
Do I need to take this BCM to the dealer for programming?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for plug-and-play installation, saving you time and money.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that manages many of your vehicle’s non-engine related electronic systems, such as power windows, locks, lights, wipers, security, and the HVAC system.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a very manageable job. It’s typically located under the driver’s side dash and involves unplugging the old module and plugging in the new one. The entire process often takes less than 15 minutes.
Do I need to return my old BCM?
No, there is no core charge or requirement to send your old part back.
My airbag light is on after installation. What should I do?
If the airbag light is on, the BCM needs to be electronically introduced to the airbag system’s computer (SDM). This is done with a ‘Setup SDM Primary Key in BCM’ procedure using a professional-grade scan tool.