Restore Your Vehicle’s Electrical System with a VIN-Programmed BCM
If you’re dealing with baffling electrical issues in your GM vehicle—like flickering lights, a security system that acts up, power windows with a mind of their own, or an intermittent no-start condition—a failing Body Control Module (BCM) is often the culprit. As the central command center for your vehicle’s body electronics, the BCM’s health is critical. When it fails, it can create a cascade of frustrating and hard-to-diagnose problems. This isn’t just an inconvenience; it can affect vehicle safety and security.
We take the guesswork and dealership hassle out of the repair. This is a direct-fit replacement GM Body Control Module that arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. Simply provide us with your VIN at checkout, and our experts will handle the programming. This ensures seamless communication with your vehicle’s other computers, restoring full functionality and getting you back on the road with confidence.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 GMC Acadia with a complaint that was driving them crazy: the interior lights would randomly turn on while driving, the radio would shut off, and occasionally, the vehicle wouldn’t start, showing only a ‘Service StabiliTrak’ message. They had already replaced the battery and checked the alternator. In my shop, I’ve seen this exact pattern dozens of times. After connecting my scan tool, I found multiple ‘Lost Communication’ codes (U-codes) with the BCM. The issue wasn’t the battery; it was a failing GM Body Control Module creating a network storm. Installing a VIN-programmed module like this one resolved all symptoms instantly, saving the customer from more unnecessary parts and labor.
Is Your Vehicle Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-working interior and exterior lights
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all
- ✔ Vehicle security system faults or alarm sounding randomly
- ✔ Instrument cluster gauges behaving strangely or going dead
- ✔ A/C and heater controls not responding
- ✔ Key fob not working correctly
- ✔ Diagnostic Trouble Codes (DTCs) related to lost communication, such as U0140, U0155, or U0164
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a DIY enthusiast or a quick task for any professional. While the location varies slightly by model (see fitment list), the general process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: The BCM is typically found under the driver’s or passenger’s side of the dashboard, or in the center console area. Refer to our fitment list for the specific location on your vehicle.
- Remove Trim Panels: You may need to remove plastic trim panels to access the module. These are usually held in by clips or a few screws.
- Disconnect and Remove: Carefully 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 place of the old one. Securely plug in all electrical connectors, ensuring they click into place.
- Post-Installation Checks: Reconnect the battery terminal. Start the vehicle and test all body functions (lights, windows, locks, etc.). In some cases, additional steps noted below may be required.
Important Post-Installation Procedures
Your module comes programmed, but some vehicle systems require a ‘handshake’ with the new BCM. Depending on your specific model, you may need a professional scan tool to perform these relearn procedures:
- ✔ Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the systems.
- ✔ Brake Pedal Position Relearn: A recalibration may be necessary to ensure brake lights and traction control function correctly.
Disclaimer: We strongly recommend consulting a factory service manual or a qualified technician for vehicle-specific instructions and procedures.
Verified Vehicle Compatibility
This GM Body Control Module is a direct replacement for a wide range of vehicles and part numbers. Please verify your vehicle is on this list and that the part number on your original module is listed below.
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
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the BCM with the correct software and vehicle-specific options. This ensures it works perfectly with your car’s features, just like the original module from the factory.
Is this part truly plug-and-play?
It is professionally programmed to your VIN, which handles the most complex part of the installation. However, as with many modern electronic modules, some vehicles may require a simple ‘relearn’ procedure for systems like the airbags or brake sensor to fully sync with the new BCM. This is often done with a high-end scan tool.
Do I have to send my old BCM back?
No. There is no core charge for this part. You can keep your original module, saving you the time and expense of return shipping.
What happens if my airbag light is on after installation?
This is a known possibility and is typically resolved by performing the ‘Setup SDM Primary Key in BCM’ procedure. This requires a professional-grade diagnostic tool to complete the security handshake between the new BCM and the airbag system.
Will this fix my car’s no-start problem?
If the no-start is caused by the BCM—for example, due to a security system fault or failure to energize the fuel pump relay—then yes, this module will resolve the issue. It’s crucial to properly diagnose that the BCM is the root cause before ordering.