Restore Full Control of Your HUMMER H2’s Electronics
Is your 2008 or 2009 HUMMER H2 experiencing a host of frustrating electrical problems? As the central command center for your vehicle’s body electronics, a failing Body Control Module (BCM) can cause chaos. From power windows that won’t cooperate to a security system that has a mind of its own, these issues can be more than just an annoyance—they can compromise your vehicle’s function and security. I’ve spent over 20 years diagnosing these exact problems, and I can tell you that a faulty BCM is often the hidden culprit behind the most baffling electrical gremlins.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional Cloning Service with this module. Simply send us your original BCM, and we will transfer all of its critical data—including VIN, mileage, and key programming—to this replacement unit. The result? You receive a module that is truly plug-and-play, eliminating the need for expensive dealership programming and getting your H2 back to perfect working order faster.
A Technician’s Notebook: The Ghost in the Machine
A customer brought in their ’08 HUMMER H2 with a list of symptoms that sounded like a haunting: the radio would turn on and off by itself, the interior lights would flicker, and the horn would randomly blare. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a series of communication error codes (U-codes) pointing to the BCM. This is a classic failure pattern I’ve seen hundreds of times. The internal processors of the BCM start to break down, sending erratic signals across the vehicle’s network. By installing a cloned BCM, we transferred the original vehicle data and fixed every single issue in one go. The customer was relieved to have a simple, definitive fix without a costly trip to the dealer.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security system or keyless entry works intermittently or not at all.
- ✔ Instrument cluster gauges behaving strangely or warning lights staying on.
- ✔ The radio or climate control system powers on and off unexpectedly.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or B1001.
- ✔ A no-start condition where the engine cranks but won’t fire up due to a security system fault.
A Straightforward Guide to Installation
With our cloning service, installing your new BCM is a direct-swap process. Here’s a general guide for your 2008-2009 HUMMER H2:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the HUMMER H2, the BCM is typically located on the driver’s side, attached to the firewall or under the dash. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, cloned BCM in the same location and securely reconnect all the electrical connectors. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Post-Install Checks: Start the vehicle and test all body functions—windows, locks, lights, radio, etc. Note the post-installation procedures below, as some relearns may be necessary.
Important Post-Installation Information
While our cloning service handles the main programming, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be required to ensure your brake lights and traction control system function correctly.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Vehicle Compatibility
This BCM is a direct fit for the 2008-2009 HUMMER H2. It also serves as a compatible replacement for a wide range of other GM vehicles and supersedes numerous part numbers, ensuring broad applicability. Please verify your original part number against the list below. If your vehicle is listed, this module is the correct fit.
Interchangeable 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
Fits Models Including: Acadia (07-12), Avalanche (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade (10), Express/Savana Vans (08-12), G8 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon (10).
Frequently Asked Questions
What is a cloning service and why do I need it?
Cloning is a process where we transfer the exact software, VIN, mileage, and key data from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your vehicle, allowing you to avoid expensive and time-consuming reprogramming at a dealership.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the vehicle-specific data. We will return your original module along with the newly programmed replacement.
Will this fix my ‘Service Security System’ message?
In many cases, yes. The BCM is integral to the vehicle’s anti-theft and security system. A faulty BCM is a very common cause of security system errors and no-start conditions.
Is this a difficult part for a DIYer to install?
For most DIYers with basic tools, this is a manageable job. The primary challenge is typically accessing the BCM under the dashboard. Since our cloning service removes the need for programming, the physical swap is straightforward.
What happens if my airbag light comes on after installation?
This indicates the new BCM needs to be electronically introduced to the airbag system (SDM). A mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.