Restore Command and Control of Your Hummer H2
Is your 2003-2007 Hummer H2 acting possessed? Flickering lights, a dead instrument cluster, or power windows with a mind of their own are classic signs that the Body Control Module (BCM)—the vehicle’s central electronics hub—is failing. Don’t let frustrating electrical gremlins sideline your H2. This OEM-quality 15116066 Body Control Module arrives expertly programmed to your vehicle’s specific VIN, offering a direct, effective solution that restores full functionality and gets you back on the road with confidence.
Case Study: A Tricky Diagnosis
I had a 2005 Hummer H2 in the shop last month that was a diagnostic nightmare for another garage. The owner reported random no-start conditions, the radio would turn on by itself, and the HVAC blower was intermittent. They had already replaced the battery and checked all the grounds. After plugging in my scanner, I saw a dozen communication codes (U-codes) pointing to a network failure. In my 20 years of experience, this pattern almost always points back to a failing BCM corrupting the data bus. We installed one of our VIN-programmed 15116066 modules, and every single issue was resolved instantly. It’s a fix I’ve performed hundreds of times on these GM platforms.
Is Your Hummer H2 Showing These Symptoms?
A failing BCM can cause a wide range of confusing electrical problems. If you’re experiencing any of the following, this module is likely the solution you need for your 2003-2007 Hummer H2 BCM.
- ✔ Unresponsive or erratic power windows, door locks, and interior lights.
- ✔ The security system preventing the engine from starting or engaging randomly.
- ✔ HVAC controls not working or the blower motor running intermittently.
- ✔ An illuminated airbag light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Strange instrument cluster behavior or complete power loss.
- ✔ A flood of communication DTCs that make diagnosis difficult.
- ✔ Non-functional windshield wipers or washers.
A Straightforward Guide to Installation
One of the best features of this module is its simple, plug-and-play installation. Because it comes pre-programmed for your H2, you can avoid a costly trip to the dealership. The entire process typically takes less than 15 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the system to reset.
- Locate the BCM: On the Hummer H2, the Body Control Module is typically found on the left-hand side of the dash, near the steering column. You may need to remove a lower dash panel for access.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Remove any mounting screws or clips holding the old module in place, then install the new 15116066 BCM in its place.
- Reconnect and Test: Securely plug the electrical connectors into the new module. Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair.
Post-Installation Note: In some cases, an airbag light may remain on. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure. Similarly, a brake pedal position relearn may be needed. These are simple procedures for any qualified technician.
Guaranteed Fitment for Your GM Vehicle
This 15116066 BCM is a direct-fit replacement for a wide range of General Motors trucks and SUVs. It is also interchangeable with part numbers 10383536, 15136225, 15136877, 15198116, and others. Please verify your vehicle from the list below:
Cadillac Escalade, ESV, EXT 2003-2006 (under steering column)
Chevrolet Avalanche 1500/2500 2003-2006 (under steering column)
Chevrolet Silverado & GMC Sierra 1500/2500/3500 2003-2007 Classic (Crew Cab, under steering column)
Chevrolet Suburban & GMC Yukon/Yukon XL 1500/2500 2003-2006 (under steering column)
Chevrolet Express & GMC Savana Van 2004-2007 (center dash, w/ commercial package)
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for immediate installation, saving you time and money on dealership programming fees.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a very straightforward job that takes less than 15 minutes. The module is typically located under the driver’s side dash.
What happens if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to resolve this.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without any hassle or need to return it.
Will this fix a no-start problem?
Yes, a faulty BCM is a very common cause of no-start or intermittent starting issues related to the vehicle’s security system. Replacing it often solves the problem.