Restore Your Vehicle’s Electrical Stability
Are you battling a storm of strange electrical problems in your GM vehicle? Flickering interior lights, power windows with a mind of their own, a security system that randomly immobilizes the engine, or a dashboard that lights up like a Christmas tree for no reason? These aren’t just annoyances; they’re 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 chaos. 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 Ghost in the Machine
I remember a 2011 Chevy Impala that came into the shop with a truly baffling set of symptoms. The owner complained of an intermittent no-start condition and said his radio and power locks would stop working for hours at a time. He’d already replaced the battery and checked the alternator. We scanned for codes and found a slew of ‘U’ codes, indicating a loss of communication between various modules. This is a tell-tale sign. Instead of chasing individual components, we went straight to the BCM. After installing a new, programmed module, every single one of the ghostly electrical issues vanished. It’s a common story with these platforms, and a new BCM is often the one-stop fix.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a failing BCM is the likely culprit. Verifying these symptoms can save you time and money by avoiding unnecessary repairs.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic or inoperative interior and exterior lighting.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Dashboard warning lights appearing randomly or staying on.
- ✔ Communication error codes, often in the U-series (e.g., U0140 – Lost Communication With Body Control Module).
- ✔ Problems with the keyless entry or remote start systems.
Your Straightforward Guide to BCM Installation
Replacing the GM Body Control Module is a manageable job for a confident DIYer. Our pre-programming service eliminates the most difficult step, saving you a trip to the dealer. Just follow these general steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: The BCM’s location varies by model. It’s typically found under the driver’s side or center of the dashboard, or behind a kick panel. (Refer to the fitment list for common locations).
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of all screws and clips.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical harnesses, ensuring each one clicks into place.
- Reconnect Battery & Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all body functions—lights, locks, windows, etc.—to confirm the repair.
- Perform Relearns (If Needed): As noted in our post-installation guide, you may need a professional scan tool to perform a brake pedal position relearn or sync the airbag system if a warning light is present.
Guaranteed Vehicle Compatibility
This module is a direct replacement for a wide range of original equipment part numbers and fits numerous GM vehicles. Please confirm your vehicle is on this list before ordering. We program the module using your VIN to ensure it functions exactly as intended for your specific make, model, and options.
This unit replaces 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
Do I need to do any programming myself?
Do I need to do any programming myself?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN at checkout, and we will flash the module with the latest GM software specific to your vehicle. It arrives ready for installation.
Is this a plug-and-play installation?
For most vehicles, yes. After the physical installation, the core functions will work immediately. However, depending on your specific model, certain post-installation procedures like a Brake Pedal Position Relearn or an Airbag System Sync may be required if you see related warning lights.
What is a core charge? Do I need to send my old part back?
There is absolutely no core charge for this GM Body Control Module. You are not required to return your old, faulty module to us. You can keep it or dispose of it at your convenience.
What happens if my airbag light comes on after installation?
If the airbag light is on, it means the new BCM needs to be synchronized with the vehicle’s SDM (Sensing and Diagnostic Module). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a simple step for any qualified mechanic.
How do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side of the dashboard, visible through the windshield.