Restore Your Vehicle’s Electrical System with a Plug-and-Play BCM
Are you tired of chasing electrical gremlins in your GM vehicle? From flickering dash lights and malfunctioning power windows to a car that won’t start, a failing Body Control Module (BCM) can make your vehicle feel unreliable and unsafe. As the central command center for your car’s body electronics, the BCM controls dozens of functions you use every day. When it fails, the symptoms can be confusing and frustrating. This is a direct-fit, reliable solution, a Programmed GM Body Control Module that arrives ready for installation, saving you hundreds in dealership programming fees.
We take the guesswork and hassle out of the repair. Simply provide your vehicle’s VIN at checkout, and our experts will program the module with the latest GM software specific to your car. This ensures seamless integration and restores all functions to factory specifications. No expensive scan tools, no trips to the dealer—just a straightforward fix.
A Technician’s Notebook: The Intermittent Gremlin
I once had a 2010 GMC Acadia in my bay that was driving its owner crazy. The radio would turn off randomly, the interior lights would flicker, and occasionally the anti-theft light would stay on, causing a no-start. The owner had already replaced the battery and alternator. After checking all power and ground connections, my scan tool showed multiple communication loss codes (U-codes) with various modules. This is a classic sign of a failing BCM. Instead of throwing more parts at it, we installed a VIN-programmed BCM. The gremlins vanished instantly. It’s a common failure I’ve seen hundreds of times, and a direct replacement is the only reliable fix.
Common Signs Your BCM is Failing
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. A failing module can often trigger communication error codes like U0140, U0155, or other B-series (Body) codes.
- ✔ Erratic or non-working power windows, door locks, and mirrors.
- ✔ Interior dome lights or dashboard lights flickering or staying on.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers activating on their own or not responding.
- ✔ False warnings on the instrument cluster (e.g., door ajar, low fuel).
- ✔ Complete loss of communication with the module, confirmed by a professional scan tool.
Your Straightforward BCM Installation Guide
Installing your Programmed GM Body Control Module is a manageable job for a confident DIYer. While the exact location varies (see fitment list below), the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side of the dashboard, near the steering column or behind a kick panel. On vans, it’s often in the center dash area.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Use a trim removal tool to avoid breaking 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 and reconnect all electrical connectors securely. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, locks, windows, wipers, etc.
Important Post-Installation Note: In some cases, additional steps may be needed. If your airbag light is on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. Some models may also require a ‘Brake Pedal Position Relearn’ to ensure proper brake light and traction control operation. Always refer to a service manual for your specific vehicle if you are unsure.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for numerous part numbers and fits a wide range of GM vehicles. Please verify your model and year below. Note the location, as it can vary.
- Acura/GMC/Chevrolet (Lambda Platform): Acadia (07-12), Enclave (08-12), Traverse (09-12), Outlook (07-10) – LH Dash
- Chevrolet Cars: Impala (06-13), Monte Carlo (06-07) – LH Dash/Steering Column
- Cadillac Cars: DTS (06-11), Lucerne (06-11) – RH Center Dash; CTS (08-13) – LH/RH Dash; STS (10) – Center Dash; SRX (07-09) – LH Dash
- GM Trucks/SUVs: Tahoe, Suburban, Avalanche, Yukon, Escalade (10) – Under steering column (check ID)
- GM Vans: Express/Savana 1500/2500/3500 (08-12) – Center Dash
- Other Models: Equinox (07-09), Torrent (07-09), Vue (08-10), G8 (08-09), Captiva Sport (12), Hummer H2 (08-09), Caprice (11-13)
This part replaces the following 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
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to load the exact, factory-correct software for your vehicle’s specific options and features. This makes the Programmed GM Body Control Module a true plug-and-play part and ensures all systems function correctly without requiring a trip to the dealership for programming.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very manageable installation. Accessing the module under the dash is usually the most challenging part. No special tools are needed for the replacement itself, but remember some vehicles may require a post-install relearn procedure with a professional scan tool.
What happens if my airbag light comes on after installation?
This can happen because the new BCM needs to be electronically ‘handshaken’ with the airbag system’s Sensing and Diagnostic Module (SDM). A repair shop with a bi-directional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Do I need to send my old BCM back?
No. We do not require you to return your original module. There is no core charge associated with this purchase, saving you time and the cost of return shipping.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the Pass-Key/Pass-Lock anti-theft system. When it fails, it can trigger security warnings and prevent the vehicle from starting. This module, programmed to your VIN, will restore the security handshake with your key and ignition.