Restore Your Vehicle’s Electronic Stability and Function
Are you dealing with a vehicle that seems to have a mind of its own? Flickering dashboard lights, power windows and locks that work intermittently, or a security system that prevents your car from starting can be incredibly frustrating. In my 20+ years of automotive diagnostics, these baffling electrical gremlins often point to one culprit: a failing Body Control Module (BCM). This isn’t just an inconvenience; it’s the central nervous system for your vehicle’s comfort and security features, and when it fails, chaos ensues.
This is a direct-fit replacement GM Body Control Module, designed to solve those complex issues without the dealership price tag or hassle. The biggest challenge with BCM replacement has always been the mandatory, expensive programming. We’ve eliminated that step for you. Simply provide us with your vehicle’s VIN at checkout, and our technicians will program the module with the latest GM software specific to your car, truck, or van. It arrives at your door ready for installation, making this a truly plug-and-play solution.
A Technician’s Notebook: The Case of the Haunted Impala
A customer brought in a 2011 Impala with a laundry list of complaints: the radio would turn off randomly, the ‘Service StabiliTrak’ light was on, and sometimes it wouldn’t start, showing only a flashing security light. They had already replaced the battery and checked the alternator. Diagnostics showed communication loss codes (U0140) with the BCM. After confirming power and ground to the module were solid, it was clear the internal logic of the BCM itself was failing. We installed a VIN-programmed module, and all the bizarre symptoms vanished instantly. This is a classic failure pattern I’ve seen hundreds of times on this GM platform.
Common Signs of a Failing GM Body Control Module
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light is on, preventing the engine from starting.
- ✔ Dashboard warning lights (like ABS, Airbag, or StabiliTrak) illuminate for no reason.
- ✔ The instrument cluster behaves erratically or goes completely dead.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss are present, such as U0140, U0155, or other U-codes.
- ✔ Horn, windshield wipers, or other accessories activate on their own or fail to work.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a DIYer with basic tools. While the exact location varies (check your vehicle’s fitment details), the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: It’s typically found under the driver’s or passenger’s side of the dashboard, or in the center console area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location as the original. Reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle is now ready to start.
- Perform Relearn Procedures: In some cases, additional steps may be needed. If your airbag light is on, a professional scan tool is required for the ‘Setup SDM Primary Key’ procedure. A ‘Brake Pedal Position Relearn’ may also be necessary for proper brake light and traction control function.
Disclaimer: No core charge is required. You can keep your old module. While this GM Body Control Module is designed for a simple installation, always consult a factory service manual for procedures specific to your vehicle.
Verified Compatibility for Your Vehicle
This module also replaces the following interchangeable 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
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to load the exact software and calibrations your specific vehicle model and options require. This ensures all features work correctly and makes the installation plug-and-play, saving you a trip to the dealer.
Is this part difficult to install?
For most DIYers with basic tools, this is a straightforward repair. The main task is accessing the module, which is usually under the dashboard. Since we handle the programming, no special computer equipment is needed for the initial installation.
What if my airbag light is on after I install it?
This can happen. The BCM and the airbag system (SDM) need to be electronically ‘handshaken’. This requires a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Do I need to return my old BCM?
No. We do not require you to send back your original part. There is no core charge associated with this purchase.
Will this fix my car’s specific electrical problem?
This module is the solution for failures of the BCM itself. While it resolves the vast majority of strange electrical issues listed in the symptoms, proper vehicle diagnosis is always recommended to rule out other causes like bad wiring, grounds, or sensors.