Restore Your Vehicle’s Electrical Stability
Are you chasing down frustrating electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, random warning messages, or a security system that prevents your car from starting are classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your car’s body electronics, and when it fails, it can cause a host of unpredictable and annoying problems. This isn’t just an inconvenience; it can be a safety issue. Don’t let a faulty module leave you stranded or dealing with an unreliable vehicle.
We offer a straightforward, reliable solution. This GM Body Control Module arrives at your door pre-programmed to your vehicle’s specific VIN. This means you can skip the expensive trip to the dealership for programming. We handle the complex part, so you can focus on the simple installation. Just provide us with your VIN at checkout, and we’ll load the latest GM software onto the module, ensuring it communicates perfectly with your vehicle’s other systems right out of the box.
A Technician’s Notebook: The Case of the Haunted Impala
I remember a 2011 Chevy Impala that came into my shop with a laundry list of bizarre symptoms. The owner said the radio would turn on and off by itself, the security light was flashing, and sometimes the car wouldn’t start. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I found a slew of communication error codes (U-codes) pointing to a network problem. In my 20+ years of experience, this pattern almost always leads back to the BCM. A failing BCM can disrupt the entire data network, making other modules act erratically. We installed one of our pre-programmed BCMs, and within an hour, the car was back to normal—no more phantom radio, no security light, and it started every time. It’s a perfect example of how a single component can create widespread chaos, and how the right part makes for a simple, effective fix.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM could be the culprit. A failing module can often set communication codes like U0140, U0155, or specific B-codes related to body functions.
- âś” Erratic or non-working power windows, door locks, and interior/exterior lights.
- âś” The security system or anti-theft light is on, possibly causing a no-start condition.
- âś” Dashboard warning lights (like Airbag, ABS, or Traction Control) illuminate for no reason.
- âś” Inaccurate readings on the instrument cluster gauges.
- âś” Horn honking randomly or not working at all.
- âś” Key fob functions are intermittent or have stopped working.
A Straightforward Guide to Your BCM Installation
Replacing your BCM is a manageable job for a DIY enthusiast. Since we program the module for you, no special tools are needed for software flashing.
- 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 of these GM models, the BCM is located under the driver’s side or passenger’s side of the dashboard, or behind the center console. A quick search for your specific model will confirm its location.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Firmly reconnect all electrical connectors, ensuring they click into place.
- Reconnect Power: Reattach the negative battery terminal. Your vehicle is now ready to start.
Important Post-Installation Steps
While this module is a direct-fit, plug-and-play solution, some vehicle systems may require a relearn procedure to sync with the new BCM. This is a normal part of the repair process.
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step of the process.
Guaranteed Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM cars, trucks, and SUVs. It is compatible with 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, and 95151084.
This part will fit the following makes and models:
- 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 1500/2500/3500 Vans (2008-2012)
- G8 (2008-2009)
- Hummer H2 (2008-2009)
- Impala (2006-2013)
- Lucerne (2006-2011)
- Monte Carlo (2006-2007)
- Outlook (2007-2010)
- Savana 1500/2500/3500 Vans (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 need to do any programming myself?
No. We program the module to the VIN you provide before shipping. It arrives ready for installation, saving you a trip to the dealer.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that manages many of your vehicle’s electronic accessories, such as power windows, locks, lights, wipers, and the anti-theft system.
Is this a difficult part to replace for a DIYer?
For most individuals with basic mechanical skills, this is a very manageable repair. The most common locations are under the dash and typically only require simple hand tools to access. Since programming is done, it’s a plug-and-play hardware swap.
What happens if my airbag light comes on after installation?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag system (SDM). This requires a professional scan tool to perform a quick procedure called “Setup SDM Primary Key in BCM.”
Do I have to send my old BCM back?
No. We do not require you to return your original module. There is no core charge for this item.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the Pass-Key/Passlock anti-theft system. A failing BCM is a very common cause of this warning message and related no-start issues.