Restore Full Electrical Function to Your Hummer H2
Is your 2008-2009 Hummer H2 experiencing a host of frustrating electrical issues? From power windows that won’t cooperate to interior lights with a mind of their own, a failing Body Control Module (BCM) is often the culprit. The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause system-wide chaos. This isn’t just an inconvenience; it can affect vehicle security and drivability. We offer a reliable, pre-programmed 2008-2009 Hummer H2 Body Control Module that gets you back on the road without the exorbitant costs and scheduling hassles of a dealership visit.
The ‘Cloning Service’ Advantage: A True Plug-and-Play Solution
What makes our service stand out is our professional cloning process. Instead of just flashing a generic file based on your VIN, we transfer the critical, vehicle-specific data from your original BCM directly onto this replacement unit. This includes your key information, security settings, and specific RPO codes for your H2’s options. The result? A module that is a perfect electronic match for your vehicle, eliminating the need for complex and expensive post-installation programming. Simply send us your original module, and we’ll send it back to you along with your ready-to-install replacement.
A Technician’s Notebook: The Case of the Haunted H2
A customer brought in their ’08 Hummer H2 with a list of symptoms that sounded like something out of a horror movie. The radio would change stations on its own, the dome lights would flicker while driving, and occasionally, the security light would stay on, preventing the truck from starting. They had already replaced the battery and checked the main grounds. After hooking up my scan tool, I saw a dozen communication loss codes (U-codes) pointing to the BCM. These modules, often located on the LH firewall in an H2, can suffer from internal circuit board fractures due to heat and vibration over time. By installing one of our cloned BCMs, we transferred all the original key data, and the vehicle was back to normal in under an hour. The customer was thrilled to avoid a multi-day stay at the dealership and a hefty programming bill.
Is Your Hummer H2 Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your BCM needs attention. In my shop, these are the most common complaints we link back to a faulty Body Control Module.
- âś” Power windows or door locks operating intermittently or not at all.
- âś” Interior or exterior lights flickering, staying on, or not turning on.
- âś” The security or anti-theft system light is illuminated, causing a no-start condition.
- âś” Instrument cluster gauges behaving erratically or going dead.
- âś” The radio or climate control functions are unresponsive.
- âś” Multiple communication error codes stored, such as U0140 (Lost Communication With Body Control Module).
- âś” False warnings appearing on the driver information center (DIC).
Your Straightforward BCM Swap Guide
Thanks to our cloning service, installing your replacement 2008-2009 Hummer H2 Body Control Module is a manageable job for a DIYer with basic tools. Always prioritize safety and consult a service manual for specifics related to your vehicle.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system capacitors to discharge before starting work.
- Locate the BCM: On the 2008-2009 Hummer H2, the BCM is typically located on the driver’s side, attached to the firewall or under the dashboard. 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 Replacement: Mount the new, cloned BCM in the same location and securely fasten it. Reconnect all electrical connectors, ensuring they click into place.
- Reconnect and Test: Re-attach the negative battery terminal. Turn the key to the ‘On’ position and test all related functions: lights, locks, windows, radio, etc., to confirm the repair was successful.
Important Post-Installation Notes
While our cloning service is designed to make this a plug-and-play repair, certain vehicle systems may require a final handshake. Be aware of the following potential procedures:
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed using a professional-grade scan tool. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be required to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. For detailed instructions and torque specifications, always refer to a factory service manual.
Verified Compatibility Across GM Models
This Body Control Module is a direct replacement for part number 20864767 and is interchangeable with a wide range of other GM part numbers. It is compatible with the following vehicles, but always verify your original part number to ensure a perfect match.
This module fits these 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
Compatible Models Include:
- HUMMER H2 (2008-2009)
- Cadillac CTS, DTS, Escalade, SRX, STS
- Chevrolet Avalanche, Caprice, Captiva Sport, Equinox, Express, Impala, Monte Carlo, Suburban, Tahoe, Traverse
- GMC Acadia, Savana, Yukon, Yukon XL
- Buick Enclave, Lucerne
- Pontiac G8, Torrent
- Saturn Outlook, Vue
Frequently Asked Questions
How does the cloning service work?
After you place your order, you’ll ship your original BCM to us. We use specialized equipment to read the unique data from your module and write it onto the replacement unit. We then ship both your original module and the ready-to-install replacement back to you.
Will I need to have this programmed by a dealer?
No. Our cloning service makes the replacement BCM a plug-and-play part. It will already contain your vehicle’s security and options information, saving you a trip to the dealer and avoiding programming fees.
What if my original BCM is completely dead or non-communicative?
In many cases, even if the BCM is failing, we can still extract the necessary data. If your module is too damaged to be read, we will contact you to discuss alternative solutions, such as programming from your VIN, though this may require additional steps after installation.
Do I need to send in my keys?
No, you do not need to send us your keys. All the necessary security information is stored within the Body Control Module itself, which is what we transfer during the cloning process.
What is your policy on the original part (the ‘core’)?
We do not require a core deposit, and we always return your original module along with the programmed replacement. You get to keep your original part.