Is Your HUMMER H2 Experiencing Strange Electrical Problems?
The Body Control Module, or BCM, is the central command center for your vehicle’s electronic accessories. When it begins to fail in a 2008-2009 Hummer H2, it can cause a cascade of confusing and frustrating issues. From flickering lights to non-responsive power windows, a faulty BCM can make your rugged H2 feel unreliable. This isn’t just an inconvenience; it can affect the vehicle’s security and safety systems. This replacement module is the definitive solution to restore full functionality and peace of mind.
From the Diagnostic Bay
We had a 2009 H2 come into the shop with a list of gremlins the owner couldn’t pin down. The radio would cut out randomly, the interior dome lights would stay on after the doors were closed, and the key fob only worked intermittently. The owner had already replaced the battery, thinking it was a power supply issue. After running diagnostics, we traced all the faults back to a failing BCM. Once we installed a new, VIN-programmed HUMMER H2 Body Control Module, every single issue was resolved. It was like giving the truck a brand new nervous system.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The vehicle’s security system malfunctioning or preventing the engine from starting.
- ✔ Instrument cluster gauges behaving erratically or warning lights appearing for no reason.
- ✔ Wipers, radio, or climate control systems not functioning correctly.
- ✔ A “Service Electrical System” message displayed on the driver information center.
A Simple, Programmed Solution
Don’t let a complex electrical diagnosis intimidate you. This isn’t just a generic part; it’s a complete, ready-to-install solution. We take the guesswork out of the repair by pre-programming this HUMMER H2 Body Control Module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This process ensures that the module communicates perfectly with your H2’s other systems, just like the original. It’s loaded with the latest software updates from GM, ensuring optimal performance and reliability. Simply provide your VIN upon purchase, and we’ll handle the complex programming for you.
Post-Installation Information
While this module is designed for straightforward installation, some vehicle systems may require recalibration. If the airbag warning light appears after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. Additionally, a Brake Pedal Position Relearn might be necessary to ensure proper brake light and traction control function. There is no core charge for this part, so you can keep your original module.
Fitment Compatibility
This BCM, part number 20864767, is the direct replacement for the 2008-2009 HUMMER H2. It also interchanges with a wide variety of other GM vehicles and part numbers. Please verify your part number or consult the detailed fitment list below to ensure compatibility with your specific vehicle.
Compatible 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 is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls many of its non-engine related functions, such as power windows, locks, lights, wipers, and the security system.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings for your Hummer H2’s specific options and features. This ensures it works correctly right out of the box.
Is this BCM difficult to install?
The physical installation is typically straightforward, involving unplugging the old module and plugging in the new one. However, some post-installation procedures, like an airbag system sync, may require a professional diagnostic tool.
Do I need to send my old BCM back?
No. There is no core charge associated with this part. You can keep your original module without any additional fees.
What should I do if my airbag light is on after installation?
If the airbag light is on, the BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be performed by a qualified technician with a professional scan tool.