Is your 2008-2009 Hummer H2 suffering from bizarre electrical issues? You’re not alone.
The Body Control Module, or BCM, is the central nervous system for your vehicle’s comfort and convenience features. When it starts to fail, it can cause a cascade of frustrating problems, from flickering lights and malfunctioning power windows to a vehicle that won’t start at all. Don’t let a faulty BCM keep your rugged H2 sidelined. This is the direct-fit, reliable solution you need.
From the Diagnostic Bay
We had a 2009 H2 come into the shop that was driving the owner crazy. The alarm would go off randomly, the interior lights would stay on, and sometimes the power locks wouldn’t respond. He’d already replaced the battery, thinking it was a simple power issue. After hooking up our diagnostic scanner, we saw a flood of communication errors all pointing back to one culprit: a failing BCM. We installed a VIN-programmed module just like this one, and it was like giving the truck a new brain. All the strange electrical gremlins vanished, and the customer drove away with a vehicle that behaved like new.
Common Symptoms of a Failing Hummer H2 BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from the dashboard gauges or warning lights.
- ✔ Malfunctioning interior or exterior lighting.
- ✔ Issues with the factory security system or remote keyless entry.
- ✔ A ‘No Communication’ error when trying to scan the vehicle with a diagnostic tool.
- ✔ An intermittent no-start condition where the engine cranks but won’t fire up.
The Plug-and-Play Solution: A Pre-Programmed 2008-2009 Hummer H2 BCM
Replacing a BCM isn’t just about swapping parts. The module must be programmed specifically to your vehicle’s Vehicle Identification Number (VIN) to work correctly with its unique set of options and security systems. We handle this critical step for you. Simply provide us with your VIN during checkout, and we will flash the module with the latest GM software updates for your specific Hummer H2. This saves you a costly trip to the dealership for programming and makes the installation process as straightforward as possible.
Installation and Post-Install Notes
While the physical installation is simple, a couple of follow-up procedures may be necessary depending on your vehicle’s configuration:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be required.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Guaranteed Fitment for Multiple Part Numbers
This module is a direct replacement for a wide range of original part numbers, ensuring compatibility. Please verify your original part number is on this list:
10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
What does a Body Control Module do on a 2008-2009 Hummer H2?
The BCM acts as the main computer for the vehicle’s body electronics. It controls functions like power windows, locks, interior/exterior lights, the security system, and communicates with other vehicle modules.
Is this BCM truly plug-and-play?
Yes, it is designed to be as close to plug-and-play as possible. We program it to your vehicle’s VIN before shipping, which handles the most complex part of the installation. In some cases, minor relearn procedures may be needed post-installation.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we receive this information.
What if my original part number is not 25847588?
This module replaces a wide range of part numbers. Please check the detailed list in the description to ensure your original part number is included for guaranteed compatibility.
What happens if the airbag light comes on after I install it?
This indicates the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). A qualified technician with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I have to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.