Are you battling bizarre and frustrating electrical problems in your GM vehicle? Intermittent warning lights, malfunctioning power windows, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing issues. This replacement GM Body Control Module is the definitive solution to restore full functionality and peace of mind.
We take the guesswork and hassle out of the repair process. Unlike a generic part from a local store, this BCM arrives at your door pre-programmed to your vehicle’s specific VIN. This means no expensive trips to the dealership for programming. Simply provide us with your VIN after purchase, and our technicians will flash the module with the latest GM software updates, ensuring perfect compatibility and performance right out of the box.
We had a 2009 Chevy Impala come in that was driving the owner crazy. The radio would turn off randomly, the anti-theft light would flash, and sometimes the car just wouldn’t start. The owner had already replaced the battery and checked the alternator. After hooking up our diagnostic scanner, we saw multiple communication error codes pointing to the BCM. A faulty GM Body Control Module was intermittently dropping communication with other modules on the network, causing all the chaos. Installing a VIN-programmed BCM like this one solved every single issue instantly.
Common Failure Symptoms
- âś” Erratic or non-functional interior and exterior lights.
- âś” Power windows, door locks, or mirrors working intermittently or not at all.
- âś” Vehicle security system faults or alarm sounding unexpectedly.
- âś” Instrument cluster gauges behaving erratically or going dark.
- âś” “Service Theft System” or other warnings on the driver information center.
- âś” A no-start condition where the engine cranks but won’t fire up.
- âś” Rapid battery drain while the vehicle is parked.
Installation and Post-Install Procedures
Installation is typically straightforward, involving locating the old module (often under the dash or behind a kick panel), disconnecting the battery, swapping the modules, and reconnecting the battery. However, depending on your specific vehicle, a couple of additional steps may be required:
- Airbag System Sync: If the airbag warning light is illuminated 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: Some models may require a brake pedal position sensor relearn to ensure correct operation of the brake lights and stability control systems.
This module is a direct replacement for a wide range of part numbers, including 10382479, 15819552, 20815898, 22860591, and many more. Please verify your part number and consult the fitment list to ensure compatibility with your vehicle.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the instrument cluster.
Is this BCM difficult to install?
For most DIY mechanics, the physical installation is straightforward. It’s a plug-and-play part because we program it to your VIN beforehand. However, be aware that some vehicles may require additional relearn procedures with a scan tool, as noted in the description.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
What happens if my airbag light comes on after installation?
This indicates the new BCM needs to be electronically introduced to the airbag system (SDM). A technician with a professional-grade diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve the light.
How do I provide my VIN for programming?
After you complete your purchase, simply reply to your order confirmation email with your vehicle’s 17-digit VIN, or send it to us through our website’s contact form with your order number. We cannot ship the part until we receive your VIN.