Restore Your Buick’s Electrical Systems with a Plug-and-Play Solution
As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration that a failing Body Control Module (BCM) can cause. In vehicles like the 2006-2011 Buick Lucerne, the BCM is the central command for nearly all of the car’s comfort and convenience features. When it starts to fail, it can create a cascade of baffling electrical problems that seem unrelated, from power windows that won’t budge to interior lights that have a mind of their own. Many owners chase these gremlins by replacing switches and motors, only to find the core issue lies with the BCM itself.
This isn’t just a replacement part; it’s a comprehensive repair service. We take the guesswork and high dealership costs out of the equation. Before we ship this BCM to you, our experts program it with the latest GM software updates, specifically matched to your vehicle’s VIN. This means the module arrives at your door ready for installation, eliminating the need for expensive programming with a high-end scan tool. It’s the most direct and reliable way to get your Lucerne’s electronics working like new again.
A Technician’s Notebook
I remember a 2008 Lucerne that came into the shop with a truly bizarre set of symptoms. The radio would turn on and off randomly, the driver’s side power lock was inoperative, and the security light would flash, preventing the car from starting intermittently. The owner had already replaced the battery and checked all the fuses. A quick scan showed a slew of U-codes (communication errors), pointing to a network problem. Instead of a complex wiring issue, the culprit was a failing 2006-2011 Lucerne BCM. The internal circuitry was failing, causing it to broadcast junk data across the vehicle’s network. A pre-programmed BCM resolved all issues in under an hour, saving the customer hundreds compared to a dealership diagnosis and repair.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty Body Control Module is a likely cause. A proper diagnosis is always recommended, but these are hallmark symptoms I’ve seen countless times.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security system acting up, causing no-start conditions.
- ✔ The horn sounding unexpectedly or not working.
- ✔ Inaccurate or erratic gauge readings on the instrument cluster.
- ✔ Multiple communication error codes (U-codes) stored in the system.
A Straightforward Guide to Your BCM Installation
Installing your pre-programmed BCM is a manageable job for a confident DIYer. For the 2006-2011 Buick Lucerne, the BCM is typically located behind the right side of the dashboard. Always consult a service manual for your specific vehicle’s procedure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: Carefully remove the necessary dash panels to gain access to the BCM. On the Lucerne, this is usually the glove box or a panel on the passenger side.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, etc.
- Perform Relearns (If Needed): In some cases, you may need to perform additional procedures like an Airbag System Sync or a Brake Pedal Position Relearn if you see related warning lights. See our FAQ for more details.
Will This Fit My Vehicle?
This Body Control Module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle is on this list and that your original part number is listed below for guaranteed compatibility.
This module is a direct fit for part number 15921353 and interchanges with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Compatible Models Include:
ACADIA 07-12, AVALANCHE 1500 10, CAPRICE 11-13, CAPTIVA SPORT 12, CTS 08-13, DTS 06-11, ENCLAVE 08-12, EQUINOX 07-09, ESCALADE 10, ESCALADE ESV 10, ESCALADE EXT 10, EXPRESS 1500 VAN 08-12, EXPRESS 2500 VAN 08-12, EXPRESS 3500 VAN 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SAVANA 1500 VAN 08-12, SAVANA 2500 VAN 08-12, SAVANA 3500 VAN 08-12, SRX 07-09, STS 10, SUBURBAN 1500 10, TAHOE 10, TORRENT 07-09, TRAVERSE 09-12, VUE 08-10, YUKON 10, YUKON XL 1500 10.
Note: Specific options or IDs may apply. Please check the original fitment data or contact us to confirm.
Frequently Asked Questions
Frequently Asked Questions
How does the programming service work?
It’s simple. After you complete your purchase, you’ll need to provide us with your vehicle’s 17-digit VIN. Our technicians then use this VIN to load the correct GM factory software and vehicle-specific calibrations onto the BCM. This ensures it communicates perfectly with your car’s other modules.
Do I need to send my old BCM to you?
No, this service does not require you to send in your original module. We program this replacement unit using your VIN, so you can keep your vehicle drivable until the new part arrives.
Is this a true plug-and-play solution?
For over 95% of installations, yes. Because we pre-program the module, you can simply install it, and it will function correctly. However, in some vehicles, certain security or safety systems (like the airbag system) may require a simple ‘relearn’ procedure with a compatible scan tool to sync everything perfectly.
What is the ‘Airbag System Sync’ mentioned in the procedures?
If your airbag light is on after installation, it means the new BCM and the airbag module (SDM) need to be electronically introduced. A professional mechanic can perform the ‘Setup SDM Primary Key in BCM’ procedure with a diagnostic tool to sync them and clear the light.
Why would I need a ‘Brake Pedal Position Relearn’?
The BCM uses data from the brake pedal position sensor for functions like brake lights and traction control. After replacing the BCM, the system may need to recalibrate the sensor’s baseline reading to ensure accuracy. This is not always required but is a potential final step.
Will this fix my specific problem?
This 2006-2011 Lucerne BCM is a direct solution for failures within the module itself. While it resolves the vast majority of the symptoms listed, we always recommend having a qualified mechanic perform a full diagnosis to rule out issues with wiring, sensors, or other components before ordering.