Restore Full Electrical Function to Your GM Vehicle
Is your 2008-2012 Chevrolet Express 1500 or other GM vehicle suffering from bizarre electrical issues? Flickering lights, malfunctioning power windows and locks, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This direct-fit replacement Body Control Module, part number 20864767, is the definitive solution to restore your vehicle’s factory functions and reliability.
From the Diagnostic Bay
We had a 2010 Savana work van come into the shop that was driving the owner crazy. The dome lights wouldn’t turn off, the radio would randomly switch stations, and the power door locks only worked when they felt like it. The owner had already replaced the battery and checked fuses with no luck. After connecting our scan tool, we saw erratic data coming from the BCM. It was sending ghost commands throughout the vehicle’s network. We installed a new, VIN-programmed module, and instantly, all the gremlins were gone. It’s a perfect example of how this single component can be the root of so many seemingly unrelated electrical issues.
Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Malfunctioning security system, including random alarm activation or key fob issues.
- ✔ False warnings on the instrument cluster (e.g., “Service Airbag,” “Service StabiliTrak”).
- ✔ Intermittent no-start condition where the engine cranks but won’t fire up.
- ✔ Problems with the HVAC (heating and air conditioning) controls.
- ✔ Radio or infotainment system behaving unpredictably.
The Right Solution: A Pre-Programmed Express 1500 Body Control Module
Don’t settle for a generic module that requires an expensive trip to the dealership for programming. We take the hassle and extra cost out of the repair. When you purchase this Express 1500 Body Control Module, we use the Vehicle Identification Number (VIN) you provide to flash the unit with the latest, most stable software directly from GM. This ensures that the module is perfectly matched to your vehicle’s specific options and configuration. It arrives at your door ready for installation, making the process as simple as swapping the part. This is the most efficient way to get your van or truck back to operating as it should.
Installation and Post-Install Considerations
While the physical installation is straightforward for a moderately skilled DIYer or any professional technician, some vehicles may require additional electronic calibration steps after the new BCM is installed. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be needed.
Disclaimer: Specific procedures can vary by vehicle model and year. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Why do you need my vehicle’s VIN?
Your VIN is essential because it allows us to program the Body Control Module with the exact software and configuration for your specific vehicle. This includes information about your engine, transmission, and optional features like power seats or a specific radio. This VIN-specific programming makes the installation process much smoother and avoids conflicts with other modules on the vehicle.
Is this a plug-and-play part?
Yes, for the vast majority of vehicles, it is. Because we pre-program it to your VIN, it eliminates the need for dealership programming. However, as noted in the description, some vehicles may require a simple relearn procedure for systems like the airbags or brake pedal position sensor, which can be done with a capable scan tool.
How do I know if my BCM is the problem?
The most common indicators are multiple, unrelated electrical issues happening at once. If your power locks, interior lights, and radio are all acting up, the BCM is a prime suspect. A professional diagnosis with a high-level scan tool that can communicate with the BCM is the best way to confirm the failure before ordering a replacement.
Where is the BCM located on my Express Van?
On the 2008-2012 Express and Savana vans, the Body Control Module is typically located in the center dash area. On other compatible vehicles like the Impala or Acadia, it’s often found on the driver’s side, under or to the left of the dash. Always consult a service manual for your specific model to confirm the exact location before beginning work.
Does this part fit vehicles other than the Express 1500?
Absolutely. This BCM, identified by part number 20864767 and its alternates, fits a very wide range of GM vehicles from 2006-2013, including the Acadia, Impala, Tahoe, Yukon, and many more. Please review the detailed fitment list and match one of the listed part numbers to your original module to ensure compatibility.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module without needing to send it back to us.