Restore Your Vehicle’s Electronic Functions with a Programmed BCM
Are you battling frustrating and unpredictable electrical problems in your Buick Lucerne or another compatible GM vehicle? From flickering lights and malfunctioning power windows to a security system that has a mind of its own, these issues often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of confusing and annoying symptoms. This replacement Body Control Module, programmed specifically for your vehicle with part number 15872421, is the definitive solution to restore full functionality and peace of mind.
This isn’t just a part in a box. We provide a complete, ready-to-install solution. Before we ship your module, our expert technicians will use your vehicle’s VIN to program it with the latest GM software updates. This critical step ensures that the BCM communicates perfectly with all other modules in your car, eliminating the need for an expensive trip to the dealership for programming. It’s a direct-fit, plug-and-play repair that gets you back on the road quickly, solving the root cause of your vehicle’s electronic gremlins.
From the Diagnostic Bay
We had a 2009 Buick Lucerne come into the shop with the strangest set of symptoms. The owner said the radio would randomly change stations, the driver’s side window would sometimes refuse to go up, and the dome light would stay on for minutes after locking the car. We checked wiring, grounds, and switches for hours with no luck. On a hunch, we swapped in a known-good BCM, and instantly, every single problem vanished. A faulty BCM doesn’t always throw a specific code; sometimes, it just causes chaos. This is why a reliable, correctly programmed replacement is so essential for an accurate and lasting repair.
Is Your Vehicle’s BCM Failing?
A failing BCM can manifest in numerous ways, often making you think multiple components have failed at once. Before you start replacing individual switches and motors, check if your vehicle is exhibiting these common signs of BCM failure:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) behaving strangely, such as staying on or not turning on.
- ✔ The vehicle’s security system engaging randomly, causing false alarms, or preventing the car from starting (PassLock/PassKey issues).
- ✔ Dashboard warning lights for various systems appearing for no reason.
- ✔ Intermittent failure of the windshield wipers, radio, or climate controls.
- ✔ A “no communication” error when a diagnostic scan tool is connected to the BCM.
The Definitive Solution: A Pre-Programmed 2006-2011 Lucerne BCM
Replacing the BCM is the most effective way to resolve these persistent electronic issues. Our process ensures a seamless repair. By programming the module to your VIN, we ensure it has the correct software configuration for your vehicle’s specific options and features, from the sound system to the type of lighting it has. This eliminates compatibility conflicts and allows for a straightforward installation process for you or your mechanic, making the repair as simple as possible.
Installation and Post-Install Considerations
Physically installing the BCM is typically a plug-and-play process. However, depending on your specific vehicle, a few additional steps, known as relearn procedures, might be necessary after the new module is connected. These procedures sync the new BCM with other systems in your vehicle.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM. This is a security measure and is required for proper safety system operation.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure the brake lights and traction control system function correctly. This is often a simple procedure performed with a capable scan tool.
Please Note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Core Policy: We make it simple. There is no core charge for this module. You can keep your original part without the hassle of shipping it back.
Extensive Vehicle Compatibility
While this is a perfect fit for the 2006-2011 Buick Lucerne, this BCM is also compatible with a wide array of other GM vehicles. Please verify your part number and check the list below to ensure proper fitment for your car, truck, or van. This module interchanges with the following 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.
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
IMPALA 06-12 Body Control (BCM); (LH dash)
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 Body Control (BCM); (center dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
… and many more listed in the original description.
Frequently Asked Questions
What does a Body Control Module do?
The Body Control Module (BCM) is a computer that manages and controls many of your vehicle’s non-engine-related functions. This includes power windows, locks, lights, wipers, security system, and other interior electronic features.
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings for your vehicle’s specific features and options. This ensures it works correctly right out of the box, saving you a trip to the dealer for expensive programming.
Is this a difficult part to install myself?
For many DIY mechanics, the physical installation is straightforward—it involves locating the old module, disconnecting the battery, and swapping the electrical connectors. However, some vehicles may require post-installation relearn procedures with a professional scan tool, as mentioned above.
What happens if the airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be synced with the vehicle’s airbag system (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a compatible high-end diagnostic tool to resolve this.
Will this 2006-2011 Lucerne BCM fit other GM vehicles?
Yes, this BCM is compatible with a wide range of GM vehicles. Please review the detailed compatibility list on this page and verify your original part number to confirm it fits your specific make, model, and year before ordering.
Do I need to return my old BCM?
No. There is no core charge associated with this part. You can keep your original module without any extra fees or hassle.