Are you battling strange and frustrating electrical problems in your GM vehicle? Intermittent power windows, flickering lights, a malfunctioning security system, or warning messages on your dash are often signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can cause a wide range of confusing issues. This replacement module is the definitive solution to restore full functionality and peace of mind.
We make the repair process straightforward. Unlike a trip to the dealership, which involves high costs for the part and separate programming fees, our BCM arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This means for many applications, the installation is a simple plug-and-play process, getting you back on the road faster and with less hassle.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights
- ✔ Power windows, door locks, or mirrors not working correctly
- ✔ Vehicle security system acting up or preventing the car from starting
- ✔ Horn honking unexpectedly or not working at all
- ✔ Dashboard warning lights (like the airbag light) illuminating for no reason
- ✔ Communication issues with other vehicle modules
Why Our GM Body Control Module is the Right Choice
Choosing our replacement GM Body Control Module ensures you receive a quality part that is ready for installation right out of the box. We handle the complex part of the job—the programming—so you don’t have to. Simply provide us with your VIN during checkout, and our technicians will flash the module with the correct software and calibrations for your specific vehicle. This eliminates the need for expensive scan tools or a visit to a mechanic for programming after the part is installed.
Installation and Additional Procedures
Physical installation is typically straightforward, involving disconnecting the battery and swapping the old module with the new one. However, please be aware of potential post-installation steps:
- Airbag System Sync: If your airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ may be required. This syncs the new BCM with the airbag system and must be done with a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure your brake lights and traction control system function properly.
This module is a direct replacement for a wide range of GM vehicles, including the Chevrolet Impala, Express Van, GMC Savana Van, Acadia, Cadillac DTS, and many more. Please verify your part number against the extensive list of compatible numbers to ensure a perfect fit.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls a wide variety of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
Is this BCM difficult to install?
The physical replacement is often simple, usually located under the dash. Since we pre-program the module to your VIN, it’s a plug-and-play installation for most vehicles, eliminating the need for dealer programming. However, some vehicles may require additional relearn procedures as noted.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive the VIN, as it is essential for the programming process.
Will this fix my specific electrical problem?
This module is the solution for issues directly caused by a faulty BCM. While it resolves the most common symptoms listed, we always recommend a proper diagnosis by a qualified technician to confirm the BCM is the root cause of your problem before ordering.
What happens if my airbag light is on after installation?
If the airbag light appears, it means the new BCM needs to be electronically synced with your vehicle’s airbag system (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure using a professional diagnostic tool.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module without needing to send it back to us.