Restore Full Functionality to Your Buick Lucerne
Are you experiencing a cascade of bizarre electrical problems in your 2006-2011 Buick Lucerne? From flickering lights and malfunctioning power windows to a car that won’t start, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, coordinating everything from interior lighting and climate control to security systems and door locks. When it fails, it can create frustrating and unpredictable issues that are difficult to diagnose.
This replacement Body Control Module is the definitive solution to these problems. We take the guesswork and high dealership costs out of the equation by pre-programming this unit specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after purchase, and our technicians will flash the module with the latest GM software updates and your vehicle’s exact configuration. This ensures a seamless installation process, restoring your Lucerne’s electronic systems to perfect working order without the need for an expensive trip to the dealer for programming.
From the Diagnostic Bay
We had a 2009 Lucerne come into the shop with the strangest set of symptoms. The owner reported that sometimes the radio would turn off, the dome lights would stay on, and occasionally the power locks wouldn’t work with the fob. We checked all the usual suspects—fuses, relays, and wiring harnesses—but everything looked fine. A scan tool showed multiple communication errors with various modules. Instead of chasing these phantom codes, we went straight to the BCM. After installing a pre-programmed unit like this one, every single issue vanished. It’s a classic case of the BCM failing internally and sending confusing signals throughout the car’s network.
Is Your 2006-2011 Lucerne BCM Failing?
A faulty Body Control Module can manifest in numerous ways. If you’re noticing any of the following symptoms, it’s a strong indication that your BCM needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Malfunctioning dashboard gauges or warning lights that illuminate for no reason.
- ✔ Problems with the vehicle’s security system or remote keyless entry.
- ✔ Climate control system not operating correctly.
- ✔ The vehicle fails to start, or the starter engages intermittently despite a good battery.
- ✔ Communication errors with other modules when scanned with a diagnostic tool.
Plug-and-Play Solution with VIN Programming
The biggest hurdle in replacing a modern vehicle module is the need for specialized programming. Our service eliminates this completely. This isn’t just a part in a box; it’s a comprehensive solution. By programming the BCM to your VIN before it ships, we ensure that it integrates perfectly with your Lucerne’s existing electronic systems, including the powertrain control module (PCM), anti-lock brake system (ABS), and theft-deterrent system. This makes the installation process as close to ‘plug-and-play’ as possible for a complex component like the 2006-2011 Lucerne BCM.
Installation and Post-Installation Notes
Physically installing the BCM is straightforward for a skilled DIYer or any professional technician. It is typically located on the right side of the dash in the Lucerne. After installation, 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 must be performed with a professional scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be necessary to ensure correct brake light operation and traction control functionality.
Always consult a factory service manual or a qualified technician for specific guidance related to your vehicle.
Guaranteed Fitment for a Wide Range of GM Vehicles
This module is a direct replacement for part number 20935349 and is compatible with a vast array of GM vehicles beyond the Lucerne. It 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, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084. Please verify the part number on your original module to ensure compatibility.
Frequently Asked Questions
Do I need to send you my old BCM?
No, there is no core charge for this part. You can keep your original module.
What happens if I don’t provide my VIN?
Providing your VIN is mandatory for this purchase. We cannot program and ship the BCM without it, as the module will not function correctly in your vehicle. The order will be held until the VIN is received.
Is this a simple plug-and-play installation?
Because we pre-program the module to your VIN, it is as close to plug-and-play as possible. However, as noted, some vehicles may require additional relearn procedures, like an airbag system sync or brake pedal position relearn, which need a professional scan tool.
Will this fix my specific electrical problem?
This BCM will resolve issues directly caused by a faulty Body Control Module. While the symptoms listed are common indicators of BCM failure, we always recommend a proper diagnosis by a qualified technician to rule out other potential causes like wiring or sensor faults.
How long does the programming process take?
Once we receive your VIN, programming is typically completed within one business day, after which your order will be shipped.