Restore Your Buick’s Electrical System with a Plug-and-Play BCM
Is your 2006-2011 Buick Lucerne acting possessed? Flickering lights, intermittent power windows, a security system that randomly goes off, or a battery that’s constantly drained are all classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a host of frustrating and difficult-to-diagnose problems. In my 20+ years as a technician, I’ve seen countless drivers chase these electrical gremlins, replacing batteries and switches, only to find the root cause was the BCM all along.
This isn’t just a replacement part; it’s a direct solution. We take the guesswork and high dealership costs out of the equation. Each module is meticulously programmed with the latest GM software updates specifically for your vehicle’s VIN. This ensures that when you receive it, it’s ready to install and communicate perfectly with your car’s other systems, restoring the reliable performance you expect from your Lucerne.
A Technician’s Notebook
A customer brought in an ’08 Lucerne with a complaint that was driving them crazy: the interior lights would flicker, the radio would sometimes not turn on, and occasionally, the car wouldn’t start, showing a “Service Theft System” message. They had already replaced the battery twice. A scan showed a dozen intermittent communication codes (U-codes) pointing to a network issue. Instead of a complex wiring problem, experience pointed me to the BCM. We swapped in a VIN-programmed module, and instantly, all the bizarre electrical issues vanished. It’s a prime example of how a single failing 2006-2011 Lucerne BCM can mimic multiple other problems.
Common Signs of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Unexplained battery drain that kills your battery overnight.
- ✔ The security or anti-theft system malfunctioning or preventing the car from starting.
- ✔ Dashboard warning lights for various systems (ABS, Airbag, Traction Control) illuminating without a clear cause.
- ✔ Communication Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or other U-series codes.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the 2006-2011 Buick Lucerne, the BCM is typically located behind the right side of the dashboard, often accessible by removing the glove box assembly.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Relearns: Start the vehicle. You may need to perform specific relearn procedures. If the airbag light is on, an “Airbag System Sync” is required. A “Brake Pedal Position Relearn” may also be necessary for proper brake light and traction control operation. These procedures often require a professional scan tool.
Why Choose Our Pre-Programmed BCM?
Getting your car fixed shouldn’t be complicated. A new 2006-2011 Lucerne BCM from a dealership requires the initial purchase, towing your vehicle to their service center, and paying for several hours of labor for programming. Our solution simplifies this process. We handle the programming before we ship, using your VIN to load the exact software your vehicle needs. This saves you time, money, and the headache of coordinating with a dealer. Plus, with no core charge, you don’t have to worry about the cost and hassle of sending your old part back. It’s the most efficient way to get your Lucerne back to 100%.
Verified Vehicle Compatibility
This Body Control Module is a guaranteed fit for the 2006-2011 Buick Lucerne. It also serves as a direct replacement for a wide range of other GM vehicles. Please verify your original part number against our cross-reference list and confirm your vehicle’s make, model, and year below. This module replaces 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.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions, such as power windows, locks, lights, security system, and interior chimes. Think of it as the brain for your car’s body electronics.
Is this BCM really plug-and-play?
Yes, it is. We program the module to your vehicle’s specific VIN before shipping. While the physical installation is straightforward, some models may require additional key programming or relearn procedures (like for the airbag or brake pedal sensor) with a professional scan tool after installation.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it. You can usually find your VIN on your vehicle’s registration, insurance card, or on a plate on the driver’s side of the dashboard.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module, which can be helpful for comparison or as a backup.
What happens if the airbag light turns on after I install it?
This can happen on some models. It means the new BCM needs to be synced with the airbag’s computer (SDM). A mechanic with a high-level scan tool will need to perform a ‘Setup SDM Primary Key in BCM’ procedure to resolve this.