Are you battling frustrating electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or warning lights that won’t go away are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a wide range of confusing and seemingly unrelated problems. This direct-replacement GM Body Control Module is the reliable, straightforward solution to restore full functionality to your car, truck, or SUV.
We take the guesswork and hassle out of the repair process. Unlike a standard replacement that requires an expensive trip to the dealership for programming, this module arrives at your door pre-programmed to your vehicle’s specific VIN. Simply provide us with your VIN after your purchase, and our technicians will flash the module with the latest GM software updates, ensuring perfect compatibility and performance right out of the box.
From the Diagnostic Bay
We had a 2011 Chevy Impala come in that was driving the owner crazy. The radio would turn off randomly, the driver’s side power lock wouldn’t work, and the “Service Airbag” light was on. The owner had already replaced the radio and the door lock actuator with no luck. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of chasing individual components, we replaced the BCM with a VIN-programmed unit. In under an hour, every single one of the mysterious electrical issues was gone. It’s a perfect example of how a single faulty module can create a cascade of problems.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights)
- ✔ Power windows, door locks, or mirrors not working correctly
- ✔ Intermittent or complete failure of the radio or infotainment system
- ✔ Vehicle security system or keyless entry malfunctions
- ✔ False warning lights on the instrument cluster (e.g., airbag, ABS, traction control)
- ✔ Battery drain issues when the vehicle is turned off
- ✔ Inability for diagnostic tools to communicate with other modules
Installing Your GM Body Control Module
Installation is designed to be as simple as possible. Once you receive your VIN-programmed module, you can install it in place of the old one. However, depending on your specific vehicle, a couple of additional steps, known as relearn procedures, may be necessary after installation. These procedures sync the new BCM with other systems in your vehicle.
- Airbag System Sync: If the airbag warning light is illuminated after installing the new BCM, a “Setup SDM Primary Key in BCM” procedure is required. This must be done with a professional-grade scan tool to ensure the safety system is fully operational.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration. This ensures your brake lights and traction control system function as intended.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
This module 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.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and the instrument cluster.
Is this BCM ready to install when I receive it?
Yes! This BCM is programmed to your vehicle’s VIN before we ship it. This ensures it communicates correctly with your vehicle’s other systems. Some minor relearn procedures may be needed after installation.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot program and ship the module without it. Please double-check it for accuracy.
What if my airbag light is on after installation?
This is not uncommon. It means the new BCM needs to be synchronized with the airbag system’s computer (SDM). A technician with a professional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
How do I know if this BCM fits my vehicle?
Please check the extensive fitment list on this page. The most reliable way to ensure compatibility is to match the part number from your original BCM to one of the numbers listed in our description.