Restore Your Vehicle’s Electrical Stability and Functionality
Are you battling frustrating electrical gremlins in your GM vehicle? Flickering dashboard lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting are all classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of confusing and unpredictable problems. This isn’t just an annoyance—it can be a serious reliability issue. This replacement GM Body Control Module is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward installation.
A Technician’s Notebook: The Case of the Haunted Impala
I once had a 2011 Chevy Impala in my bay that was driving its owner crazy. The radio would turn on and off, the interior lights would flicker, and occasionally, the car just wouldn’t start, flashing the security light. The owner had already replaced the battery and checked the alternator. After connecting my scan tool, I found a series of U-codes (communication errors) pointing to a network problem. Experience told me to look at the central hub: the BCM. A failing BCM often floods the data network with garbage signals, causing other modules to act erratically. We installed a VIN-programmed BCM, and instantly, all the phantom electrical issues vanished. This is a common failure I’ve seen hundreds of times on this GM platform.
Common Signs of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft light is illuminated, preventing the engine from starting.
- ✔ Dashboard warning lights (like ‘Service Stabilitrak’ or ‘Service Traction Control’) appear without a clear cause.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), often in the U-series (e.g., U0100, U0140).
- ✔ Horn, wipers, or radio functioning erratically or not at all.
- ✔ Rapid battery drain while the vehicle is parked, caused by the module not going to ‘sleep’ properly.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most of these vehicles, the BCM is located under the driver’s side or center of the dashboard. Refer to your vehicle’s fitment details for the specific location. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed GM Body Control Module in the same position as the old one. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm proper operation.
Important Post-Installation Information
While this BCM is programmed for your vehicle, some systems may require a ‘handshake’ procedure after installation. Please note the following:
- Airbag System Sync: If your airbag warning light is on 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. This is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure the brake lights and traction control system function correctly.
- No Core Charge: You are not required to return your old module. Keep it!
Disclaimer: Vehicle systems vary. For procedures specific to your exact model, consulting a factory service manual or a certified technician is always the best practice.
Verified Vehicle Compatibility
This GM Body Control Module is a direct replacement for a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, and Saturn vehicles. It is compatible with part numbers 10382479, 15093910, 15276271, 15872388, 20815898, 22860591, and many others listed in the fitment chart. Please verify your part number or contact us with your VIN to ensure you receive the correct part for your vehicle.
Frequently Asked Questions
Do I need to take my car to the dealer after installing this?
No. We program the module to your vehicle’s VIN before shipping. This means you can skip the dealership’s expensive programming fees. In some cases, minor relearn procedures may be needed as described above.
What information do you need from me?
After you place your order, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part that has been programmed with the latest GM software for your vehicle, ensuring factory performance and reliability.
Will this fix my ‘Service Stabilitrak’ warning light?
A faulty BCM is a very common cause for this warning. While this module often resolves the issue, you should have the vehicle scanned for codes to confirm the BCM is the root cause, as other sensors can also trigger this light.
How do I find my original BCM part number?
The part number is printed on a sticker on the BCM itself. However, since this module replaces many different part numbers, the easiest way to ensure compatibility is by providing us with your VIN.