Are you battling frustrating electrical gremlins in your 2008-2009 HUMMER H2? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and unpredictable issues. This replacement BCM is the definitive solution to restore your H2’s functionality and reliability.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN before shipping, loading it with the latest GM software updates. This eliminates the need for an expensive trip to the dealership for programming. You get a plug-and-play component that restores your vehicle’s electronic systems to perfect working order right out of the box.
From the Diagnostic Bay
A customer brought in their ’09 H2 with a laundry list of bizarre electrical problems. The dome lights would stay on, the driver’s side window worked intermittently, and the radio would sometimes shut off for no reason. After hours of chasing wires, we connected our diagnostic tool and found multiple communication loss codes with the BCM. Instead of a complex rewiring job, the fix was a new, properly programmed 2008-2009 HUMMER H2 BCM. Once installed, every single issue vanished. It highlights how this single module is the key to solving a wide array of electrical headaches.
Common Symptoms of a Failing HUMMER H2 BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system or keyless entry malfunctioning.
- ✔ The instrument cluster displaying incorrect information or warning lights.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
- ✔ Unexplained battery drain when the vehicle is off.
Installation and Post-Install Notes
This BCM is located on the left-hand (driver’s side) firewall in the HUMMER H2. Installation is straightforward, but in some cases, additional steps may be needed after the part is connected:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide range of GM part numbers, ensuring broad compatibility. Please verify your original part number against the list below to guarantee fitment.
Replaces Part Numbers: 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 the Body Control Module do on my HUMMER H2?
The BCM is a computer that manages and controls a wide variety of your vehicle’s non-engine related functions. This includes power windows, locks, interior and exterior lighting, security system, wipers, and communication between various electronic components.
Do I need to program this module after I receive it?
No. This is a key benefit of our service. We program the BCM with the latest GM software using the VIN you provide during checkout. It will arrive ready for installation with no dealer programming required.
Is this part difficult to install?
For someone with moderate mechanical skill, the installation is straightforward. The BCM is located on the driver’s side firewall. The main challenge is accessing it. After physical installation, you may need a professional scan tool for post-install procedures like the airbag system sync if the warning light appears.
What if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A repair shop with a high-level diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We must have your VIN to program the module correctly before we can ship it.
Does this part fit other vehicles besides the HUMMER H2?
Yes, this BCM fits a very wide range of GM vehicles from trucks and vans to sedans. Please use the compatibility list on this page and, most importantly, match your original part number to the list of compatible numbers to ensure a perfect fit.