Is Your GM Vehicle Plagued by Electrical Gremlins?
The Body Control Module, or BCM, is the central command center for your vehicle’s body electronics. When it begins to fail, it can cause a cascade of confusing and frustrating issues that can be difficult to diagnose. From power windows that won’t roll down to a car that refuses to start, a faulty BCM can make your vehicle feel unreliable. This isn’t just an inconvenience; it can be a serious safety concern. Restore full functionality and peace of mind with our expertly programmed replacement BCM.
From the Diagnostic Bay
We had a 2011 Chevy Impala come into the shop with the strangest symptoms. The owner said the dash lights would flicker randomly, the radio would turn off, and sometimes the car just wouldn’t start, but the battery tested fine. They had already replaced the alternator with no luck. After running diagnostics, we traced the communication errors back to a single point of failure: the BCM. A failing internal relay was causing intermittent power drops across multiple systems. Swapping in a pre-programmed GM Body Control Module like this one solved every single issue instantly. It’s a classic case of a single component causing widespread, seemingly unrelated problems.
Common Symptoms of a Failing BCM:
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Malfunctioning security system or keyless entry.
- ✔ Instrument cluster gauges behaving erratically or not working at all.
- ✔ Intermittent no-start or stalling conditions.
- ✔ HVAC (heating and air conditioning) control problems.
- ✔ Warning lights on the dash, such as the airbag or ABS light.
The Plug-and-Play Solution: A Programmed GM Body Control Module
Don’t waste time and money at the dealership. We simplify the repair process by shipping you a BCM that is pre-programmed to your vehicle’s specific VIN. This means it arrives ready for installation, loaded with the latest software updates from GM. This critical step ensures that the module communicates correctly with your vehicle’s other computers, preserving all original functions and features.
Installation and Post-Install Notes
While this module is designed for a straightforward installation, some vehicles may require additional steps after the part is fitted. These are known as ‘relearn’ or ‘synchronization’ procedures.
- Airbag System Sync: If your airbag warning light illuminates after installation, a technician will need to use a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure your brake lights and traction control system function as intended.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
This BCM is a direct replacement for 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
Guaranteed Fitment For These Vehicles:
This module fits a wide range of GM vehicles, including but not limited to: 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 Van (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), Savana Van (08-12), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon (10). Please verify your part number before ordering.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions, such as power windows, locks, lights, security system, wipers, and climate controls.
Is this BCM truly plug-and-play?
Yes, it is. We program the module to your vehicle’s VIN before shipping, so it’s ready to be installed without needing a trip to the dealership for programming. Some vehicles may require simple relearn procedures after installation, as noted in the description.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
What if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system. A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.