Restore Your Buick’s Electrical System with a Plug-and-Play Solution
If you’re dealing with baffling electrical issues in your 2006-2011 Buick Lucerne, you’re not alone. As a technician with over two decades of experience, I’ve seen countless vehicles plagued by flickering dash lights, malfunctioning power windows, or a security system that prevents the car from starting. More often than not, the culprit is a failing Body Control Module (BCM). The BCM acts as the central nervous system for your car’s comfort and convenience features, and when it starts to fail, it can create a cascade of frustrating and unpredictable problems.
Don’t let a faulty BCM keep you off the road or force you into an expensive dealership visit. We offer a reliable and straightforward fix: a replacement 2006-2011 Lucerne Body Control Module that arrives at your door fully programmed to your vehicle’s specific VIN. We handle the complex part—flashing the module with the latest official GM software—so you can focus on the simple installation. This process ensures all your car’s original features work as intended, without the need for additional programming tools or dealer intervention.
Case Study: A Tricky Diagnosis
A customer brought in their 2009 Lucerne with a complaint that was driving them crazy: the interior lights would randomly stay on, draining the battery overnight, and the remote key fob worked only intermittently. They had already replaced the battery and checked all the fuses. After connecting my diagnostic scanner, I saw several communication error codes between various modules. This is a classic sign of a BCM failure. Instead of communicating properly, it was sending junk data across the network. We installed one of our VIN-programmed BCMs, and within an hour, all the phantom electrical gremlins were gone. The customer was thrilled to have their car back in reliable working order without a massive dealership bill.
Is Your Lucerne Showing These BCM Failure Signs?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Unpredictable power door lock or window operation.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft light is on, and the engine won’t start.
- ✔ Inaccurate or erratic gauge readings on the instrument cluster.
- ✔ Remote keyless entry fails to work consistently.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors (U-codes).
Your Straightforward Lucerne BCM Installation Guide
Installing your new 2006-2011 Lucerne Body Control Module is a manageable job for a DIYer with basic tools. Follow these steps to get your vehicle back to perfect working order.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning any work on the electrical system.
- Locate the BCM: In the 2006-2011 Buick Lucerne, the Body Control Module is typically located on the right side of the dash, accessible by removing the glove box or a lower dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM onto the bracket and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Relearn Procedures: After installation, a few critical steps are required. You must perform the ‘Setup SDM Primary Key in BCM’ procedure with a capable scan tool to clear any airbag faults. Additionally, some vehicles may require a Brake Pedal Position Sensor relearn to ensure proper brake light and stability control function.
Verified Vehicle Compatibility
This BCM is a direct-fit, programmed solution for the 2006-2011 Buick Lucerne. It is also compatible with a wide range of other GM vehicles that use the same module platform. Please verify your part number against the list below to ensure perfect fitment. 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.
It fits models such as the Cadillac DTS, Chevrolet Impala, GMC Acadia, Saturn Outlook, and many more. Please refer to the detailed fitment list to confirm for your specific vehicle.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that controls most of the non-engine related electronic functions in your vehicle. This includes power windows, locks, seats, interior and exterior lighting, wipers, and the anti-theft system. It’s the command center for passenger comfort and convenience.
Is this BCM truly ready to install out of the box?
Yes. You provide us with your vehicle’s 17-digit VIN during checkout, and we program the module with the latest GM software specific to your car. This means that once you install it, it will function correctly without needing a trip to the dealer for programming.
Do I need to send my old BCM back?
No, there is no core charge or need to return your old, faulty module. You can simply recycle it locally.
What tools are required for the post-installation procedures?
To perform the ‘Setup SDM Primary Key’ for the airbag system and the brake pedal relearn, you will need a professional-grade bidirectional diagnostic scan tool. Many advanced DIY scan tools have this capability. If you don’t have one, a local independent mechanic can typically perform these relearns for you quickly.
Will this fix my ‘Service Airbag’ light?
If the airbag light is on due to a communication fault with a bad BCM, this will resolve the root cause. After installing the new BCM, the ‘Setup SDM Primary Key in BCM’ procedure must be performed with a scan tool to clear the light and ensure the system is operational.