Is Your Buick Lucerne Experiencing Electrical Gremlins?
If your 2006-2011 Buick Lucerne is suffering from strange and unpredictable electrical issues, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, controlling everything from power windows and locks to interior lighting and the security system. When it begins to fail, it can create a cascade of frustrating problems that are difficult to diagnose.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ The security system or keyless entry malfunctioning or setting off false alarms.
- ✔ Dashboard warning lights appearing intermittently without a clear cause.
- ✔ Communication errors when trying to use a diagnostic scan tool.
- ✔ Issues with the radio, climate control, or other interior accessories.
From the Diagnostic Bay
We had a 2009 Lucerne come into the shop with the owner convinced they needed a new battery. The dome lights would flicker, the radio would sometimes not turn on, and the key fob worked intermittently. The battery and alternator tested perfectly. After hooking up our professional scanner, we noticed we couldn’t communicate with several accessory modules. This pointed us directly to the network gateway, which is the BCM. A quick check of the BCM’s power and ground connections confirmed they were solid. We installed a VIN-programmed BCM, and instantly, all the bizarre electrical issues were resolved. It’s a classic case where the root cause isn’t the most obvious one.
A Direct, Programmed Solution for Your 2006-2011 Lucerne Body Control Module
Don’t let a faulty BCM keep your luxury sedan off the road. This is a direct replacement Body Control Module, part number 15921352, for your 2006-2011 Buick Lucerne and many other GM vehicles. The biggest hurdle with BCM replacement is programming—an unprogrammed module simply will not work. We solve this problem for you. Upon purchase, simply provide us with your vehicle’s VIN, and our technicians will flash this module with the latest GM software specific to your car’s exact configuration. This ensures that when you receive it, it’s ready for installation, saving you a costly trip to the dealership for programming.
Installation and Post-Install Procedures
While this module is programmed to your VIN for a streamlined installation, some vehicles may require additional synchronization steps, known as ‘relearn’ procedures. These are standard for many electronic module replacements and ensure all vehicle systems communicate correctly.
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This is because the new BCM needs to be electronically ‘introduced’ to the airbag system’s Supplemental Deployment Module (SDM). A ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade scan tool to resolve this.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor might be necessary to ensure systems like traction control and brake lights function as intended.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Compatibility
This module is a direct replacement for a wide range of original equipment part numbers, ensuring broad compatibility across numerous GM models including the Buick Lucerne, Cadillac DTS, Chevy Impala, GMC Acadia, and more. It 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, and 95151084.
Frequently Asked Questions
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to program the Body Control Module with the specific software and settings for your car’s unique features and options. This step is critical and ensures the module will function correctly once installed, saving you a trip to the dealer.
Is this part difficult to install?
The physical replacement of the BCM is typically straightforward for someone with moderate mechanical skill. However, post-installation procedures like the Airbag System Sync or Brake Pedal Position Relearn may require a professional diagnostic tool that most DIY mechanics do not own. We always recommend consulting a service manual or a qualified technician.
Where is the BCM located on my 2006-2011 Buick Lucerne?
On the 2006-2011 Buick Lucerne, the Body Control Module is located behind the right side of the dashboard, typically accessible by removing the glove box assembly.
What happens if I don’t perform the relearn procedures?
If a required relearn procedure is not performed, you may experience issues like an illuminated airbag warning light or malfunctioning brake lights. The vehicle may be drivable, but critical safety and convenience systems will not be operating correctly.
Is there a core charge for this part?
No, there is no core charge for this module. You can keep your original part without needing to send it back to us.