Tired of Chasing Electrical Gremlins in Your GM Vehicle?
As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant frustration. Are you dealing with flickering dashboard lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting? These aren’t separate, unrelated problems; they often point directly to a single faulty component: the BCM. This module is the central nervous system for your vehicle’s body electronics, and when it fails, chaos ensues.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take the guesswork and dealer-dependency out of the equation. By providing your Vehicle Identification Number (VIN) at checkout, you receive a GM Body Control Module that is professionally programmed with the latest GM software specifically for your vehicle. It arrives at your door ready to install, saving you from costly dealership programming fees and diagnostic headaches.
Case Study: A Tricky Diagnosis
A customer brought in their 2009 Chevy Traverse with a bizarre list of complaints: the radio would turn off intermittently, the liftgate wouldn’t open, and the dome lights would stay on, draining the battery. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed multiple communication loss codes (U-codes) with various modules. This is a classic sign. Instead of a dozen broken parts, the issue was the central hub—the BCM. We installed a VIN-programmed module just like this one, and every single issue was resolved in under an hour. It’s a fix that restores not just function, but peace of mind.
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 the likely solution:
- âś” Erratic or non-functional power windows, door locks, and mirrors.
- âś” Interior or exterior lights that flicker, stay on, or don’t work at all.
- âś” The security or anti-theft system activating incorrectly, causing a no-start condition.
- âś” Dashboard warning lights (like Airbag or ABS) illuminating for no reason.
- âś” Intermittent operation of the radio, climate controls, or windshield wipers.
- âś” Diagnostic trouble codes (DTCs) related to communication loss, such as U0100, U0140, or other U-series codes.
A Straightforward Guide to BCM Installation
Replacing your GM Body Control Module is a manageable job for a DIY enthusiast. While the exact location varies, it’s typically found under the driver’s or passenger’s side dashboard. Follow these general steps for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most listed models, the BCM is located under the driver’s side of the dashboard, near the steering column or kick panel. For vans, it’s often behind the center dash panel. A quick search for your specific model will confirm its location.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Securely plug in all the electrical connectors, ensuring each one clicks into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
Important Post-Installation Notes
Because this GM Body Control Module comes pre-programmed, most functions will work immediately. However, depending on your vehicle’s specific configuration, a couple of simple relearn procedures may be needed:
- Airbag System Sync: If the airbag warning light is on after installation, a scan tool procedure called “Setup SDM Primary Key in BCM” is required to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require this procedure to ensure brake lights and stability control systems function correctly. This can also be performed with a capable diagnostic tool.
Disclaimer: Vehicle systems vary. Always have a factory service manual for your specific model on hand for detailed instructions and torque specs.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. Please verify your model and year below. This part replaces the following 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.
- Acadia: 2007-2012
- Avalanche 1500: 2010
- Caprice: 2011-2013
- Captiva Sport: 2012
- CTS: 2008-2013
- DTS: 2006-2011
- Enclave: 2008-2012
- Equinox: 2007-2009
- Escalade / ESV / EXT: 2010
- Express Van (1500, 2500, 3500): 2008-2012
- G8: 2008-2009
- Hummer H2: 2008-2009
- Impala: 2006-2013
- Lucerne: 2006-2011
- Monte Carlo: 2006-2007
- Outlook: 2007-2010
- Savana Van (1500, 2500, 3500): 2008-2012
- SRX: 2007-2009
- STS: 2010
- Suburban 1500: 2010
- Tahoe: 2010
- Torrent: 2007-2009
- Traverse: 2009-2012
- Vue: 2008-2010
- Yukon / Yukon XL 1500: 2010
Frequently Asked Questions
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is the only way we can program the module with the correct software and vehicle-specific options, ensuring it works correctly right out of the box.
Is there a core charge or do I need to send my old BCM back?
No. There is no core charge for this module. You can keep your original part.
How difficult is the installation for a DIYer?
For most models, it’s a straightforward process involving basic hand tools. The most challenging part is often just accessing the module under the dashboard. Since it’s pre-programmed, you avoid the complex part of the job.
What if the airbag light comes on after I install it?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the airbag control module. A professional mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to resolve this.
Will this fix my ‘Service StabiliTrak’ message?
It can. The BCM communicates with the traction and stability control systems. If the BCM is faulty, it can cause these warnings. However, this message can also be caused by other issues like a bad wheel speed sensor, so proper diagnosis is always recommended.