Restore Your Vehicle’s Electrical Functions
Are you experiencing bizarre electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows or locks, or a security system that acts on its own are common signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your car’s body electronics, and when it fails, it can cause a wide range of frustrating and difficult-to-diagnose problems. This replacement GM Body Control Module is the definitive solution to restore your vehicle’s functionality and peace of mind.
This isn’t just a part; it’s a plug-and-play solution. We pre-program the module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This critical step ensures compatibility and proper communication with your vehicle’s other electronic systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN after purchase, and we’ll handle the rest, sending you a BCM that’s ready for installation.
From the Diagnostic Bay
We had a 2009 Chevy Equinox come in with a complaint of the battery dying overnight. The owner had already replaced the battery twice and the alternator once. After a parasitic draw test, we traced the issue to the BCM, which was failing to let other modules go to ‘sleep’ after the car was turned off. It was a constant, slow drain that was invisible to the owner but deadly for the battery. Replacing the BCM solved the problem instantly, saving the customer from further unnecessary parts replacement.
Symptoms of a Failing GM Body Control Module
If you’re noticing any of the following issues, a faulty BCM could be the culprit:
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers activating on their own or not responding to the switch.
- ✔ False warnings on the instrument cluster, such as ‘Service Airbag’ or ‘Service StabiliTrak’.
- ✔ Unexplained battery drain, leading to a dead battery.
Installation and Post-Install Notes
While installation is straightforward as the module is pre-programmed, some vehicles may require additional relearn procedures after the BCM is installed. A brake pedal position sensor relearn might be necessary for proper brake light and traction control function. Additionally, if the airbag warning light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems. Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
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 the Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic features, such as power windows, locks, lights, wipers, security system, and more.
Is this BCM ready to install when I receive it?
Yes! This BCM comes fully programmed with the latest GM software updates, matched specifically to your vehicle’s VIN. This makes installation much simpler than with an unprogrammed module.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship the part until we have programmed it, so please provide the VIN promptly to avoid delays.
What if my airbag light is on after I install the new BCM?
In some cases, the new BCM needs to be synced with the airbag system. This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be done with a professional-grade diagnostic tool.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Will this fit my vehicle?
This BCM fits a wide range of GM vehicles including many Chevrolet, GMC, Cadillac, Buick, Pontiac, and Saturn models. Please check the detailed fitment list on this page and ensure your original part number is listed.