Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your GM vehicle? Flickering lights, a security system that acts up, power windows with a mind of their own, or an engine that won’t crank intermittently are all classic signs of a failing Body Control Module (BCM). As the central hub for your car’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it’s a reliability issue. In my 20+ years of diagnostics, I’ve seen how a failing BCM can leave drivers stranded.
This is your direct-fit, reliable solution. We offer a genuine GM Body Control Module that arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This eliminates the expensive and time-consuming trip to a dealership for programming. You get a part that’s ready for installation right out of the box, restoring full functionality and peace of mind.
A Technician’s Notebook: The 2011 Impala with a Ghost
A customer brought in their 2011 Chevy Impala with a list of strange symptoms. The radio would turn on and off, the security light was always on, and sometimes the car just wouldn’t start. They’d already replaced the battery and checked the alternator. After hooking up my scanner, I saw multiple communication loss codes with various modules. This immediately pointed me toward the network’s central controller: the BCM. A quick check of the BCM’s connectors revealed no corrosion, so I knew the module itself had likely failed internally—a common issue from years of heat cycles and voltage fluctuations. We replaced it with a VIN-programmed unit like this one, performed the quick security relearn, and all the ghost-like electrical problems vanished. The customer was thrilled to have their reliable car back without a massive dealership bill.
Common Signs of a Failing BCM
If your vehicle is experiencing these issues, a faulty GM Body Control Module is the most likely culprit. Don’t let these problems get worse; address the root cause.
- ✔ Intermittent or non-functional power windows, locks, and mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ A persistent security light on the dashboard and potential no-start conditions.
- ✔ Malfunctioning keyless entry and alarm systems.
- ✔ Incorrect readings on the instrument cluster gauges.
- ✔ Communication error codes (U-codes) when scanned with a diagnostic tool.
A Straightforward Guide to Installation
Replacing your GM Body Control Module is a manageable job for a DIY enthusiast. While the location varies by model, the process is generally similar. Always consult a service manual for your specific vehicle’s procedure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: Depending on your model, it’s typically found under the driver’s side dash, behind the glove box, or in the center console area.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. Note their orientation for easier reassembly. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Final Procedures: After installation, two critical steps are often required. Use a capable scan tool to perform the ‘Setup SDM Primary Key in BCM’ to clear any airbag faults. You may also need to perform a Brake Pedal Position Sensor recalibration. Failure to do so can result in warning lights and improper system function.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and supersedes numerous part numbers, ensuring a perfect match. Please confirm your vehicle is on the list below. After purchase, you MUST provide your VIN so we can program the module correctly.
This part fits dozens of models including, but not limited to:
- ✔ Buick: Enclave (08-12), Lucerne (06-11)
- ✔ Cadillac: CTS (08-13), DTS (06-11), Escalade/ESV/EXT (10), SRX (07-09), STS (10)
- ✔ Chevrolet: Avalanche (10), Caprice (11-13), Captiva Sport (12), Equinox (07-09), Express Van (08-12), Impala (06-13), Monte Carlo (06-07), Suburban (10), Tahoe (10), Traverse (09-12)
- ✔ GMC: Acadia (07-12), Savana Van (08-12), Yukon / Yukon XL (10)
- ✔ Hummer: H2 (08-09)
- ✔ Pontiac: G8 (08-09), Torrent (07-09)
- ✔ Saturn: Outlook (07-10), Vue (08-10)
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
Frequently Asked Questions
Why do you need my VIN number?
Your vehicle’s VIN (Vehicle Identification Number) is essential for us to program the BCM with the correct software and vehicle-specific options. This ensures all features, from your power windows to the security system, work exactly as they did from the factory.
Is this part difficult to install myself?
For someone with basic mechanical skills, the physical replacement is straightforward. The most important part is having a capable diagnostic tool for the post-installation procedures like the airbag system reset and brake pedal recalibration, as noted in our guide. If you are not comfortable with these steps, we recommend seeking professional assistance.
What happens if I don’t do the post-installation procedures?
Skipping the ‘Setup SDM Primary Key’ will likely leave the airbag warning light on. Not performing the brake pedal recalibration (if required for your model) can affect brake light operation and potentially interfere with traction control/stability systems. These steps are crucial for safety and proper function.
Will this fix my ‘Service Security System’ message?
In many cases, yes. The BCM is a core component of the vehicle’s anti-theft and security system. A failing BCM is a very common cause of this warning message and related starting issues.
Is this better than a used part from a junkyard?
Absolutely. A used BCM will be programmed for a different vehicle and will not work correctly in yours without being wiped and reprogrammed by a dealer. Our module comes with fresh, updated software programmed specifically for your car, providing a reliable, long-term solution.