Restore Command of Your Vehicle’s Electronics
Are you dealing with baffling electrical issues in your Buick Lucerne or other GM vehicle? Flickering interior lights, power windows with a mind of their own, intermittent starting problems, or a security light that won’t turn off are more than just annoyances—they’re classic signs of a failing Body Control Module (BCM). As the central nervous system for your car’s comfort and convenience features, a faulty BCM can cause widespread, confusing symptoms. This isn’t just a part; it’s the solution to restoring order and getting your vehicle back to full operational health.
We offer a straightforward, reliable fix with this genuine GM Body Control Module. The best part? Our professional cloning service. Forget expensive dealership visits and the hassle of programming. You send us your original BCM, and we transfer its exact data—including your VIN, key information, and specific options—to this replacement unit. We also apply the latest GM software updates for improved performance and reliability. The module you receive will be a true plug-and-play solution, specifically configured for your car. This is the most efficient way to replace a failed 2006-2011 Lucerne Body Control Module and get back on the road with confidence.
A Technician’s Notebook: The Case of the Haunted Impala
A few months back, a 2008 Impala was towed to my shop. The owner was at his wit’s end. The radio would turn on and off, the dash lights would flicker like a disco ball, and sometimes the car just wouldn’t start. He had already replaced the battery and alternator with no success. After connecting my scanner, I saw a storm of communication error codes (U-codes) pointing to a network problem. In my 20+ years of experience, this pattern almost always leads back to one culprit: the BCM. Instead of a costly new module and hours of programming at the dealer, we opted for a cloned unit. We transferred the data from his failing BCM to the replacement. After a 15-minute install, every single issue was gone. It’s a textbook example of how a failing 2006-2011 Lucerne Body Control Module (or one in a similar GM platform) can create chaos, and how the right service makes the repair simple and effective.
Common Symptoms of a Failing GM BCM
If your vehicle is exhibiting any of these behaviors, a faulty Body Control Module is a very likely cause. A proper diagnosis is key, but these are the tell-tale signs I see in the shop every week.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from the instrument cluster gauges or warning lights.
- ✔ Headlights, taillights, or interior lights flickering or not working correctly.
- ✔ The security system activating randomly or preventing the car from starting (Service Theft System light).
- ✔ Communication loss diagnostic trouble codes (DTCs), such as U0100, U0140, or other U-series codes.
- ✔ Remote keyless entry (fob) not working despite a good battery.
- ✔ A/C and climate control functions operating incorrectly.
Your Step-by-Step BCM Installation Guide
Installing your cloned BCM is a manageable job for a DIYer with basic tools. The location varies by model (see fitment list), but the general process is similar. For the 2006-2011 Buick Lucerne, it’s located on the right side of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On the Lucerne, you’ll typically need to remove the passenger-side lower dash panel or glove box to access the module. It’s a black box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the BCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the exact same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Post-Installation Checks: Reconnect the battery terminal. Start the vehicle and test all related functions: lights, windows, locks, radio, etc. Pay attention to any new warning lights on the dash.
- Perform Relearns (If Needed): In some cases, you may need a scan tool to perform procedures like an Airbag System Sync or a Brake Pedal Position Relearn, as detailed in our post-install notes.
Verified Vehicle Compatibility
This module, part number 20864767, is a direct replacement for a wide range of original part numbers and fits numerous GM vehicles. Please verify your vehicle is on this list and that the location matches. If you are unsure, contact us with your VIN.
ACADIA 07-12 (LH dash)
AVALANCHE 1500 10 (under steering column)
CAPRICE 11-13
CAPTIVA SPORT 12 (center dash)
CTS 08 (RH dash)
CTS 08-13 (LH dash)
DTS 06-11 (RH center dash)
ENCLAVE 08-12 (LH dash)
EQUINOX 07-09 (center dash)
ESCALADE 10 (under steering column)
ESCALADE ESV 10 (under steering column)
ESCALADE EXT 10 (under steering column)
EXPRESS 1500 VAN 08-12 (center dash)
EXPRESS 2500 VAN 08-12 (center dash)
EXPRESS 3500 VAN 08-12 (center dash)
G8 08-09 (center dash)
HUMMER H2 08-09 (LH firewall)
IMPALA 06-13 (LH dash)
LUCERNE 06-11 (right side dash)
MONTE CARLO 06-07 (LH steering column)
OUTLOOK 07-10 (center dash)
SAVANA 1500 VAN 08-12 (center dash)
SAVANA 2500 VAN 08-12 (center dash)
SAVANA 3500 VAN 08-12 (center dash)
SRX 07-09 (LH dash)
STS 10 (center dash)
SUBURBAN 1500 10 (under steering column)
TAHOE 10 (under steering column)
TORRENT 07-09 (center dash)
TRAVERSE 09-12 (LH dash)
VUE 08-10 (center dash)
YUKON 10 (under steering column)
YUKON XL 1500 10 (under steering column)
This module replaces 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
Frequently Asked Questions
What exactly is a BCM cloning service?
Cloning is a process where we read the essential software and vehicle-specific data (like VIN and key codes) from your original BCM and write it directly onto the replacement module. This makes the new module an exact digital copy of the old one, ensuring seamless integration without the need for additional programming.
Do I need to send my original BCM to you?
Yes. To perform the cloning service and ensure a true plug-and-play installation, we need your original module. We will perform the service and ship both your original module and the ready-to-install replacement back to you.
Will this fix my specific electrical problem?
This module will resolve issues directly caused by a failing BCM. The symptoms listed above are strong indicators. However, we always recommend a proper diagnosis by a qualified mechanic to rule out other potential causes like bad wiring, grounds, or other modules.
What tools do I need for installation?
For most models, you’ll only need basic hand tools like a socket set, screwdrivers, and possibly some trim removal tools to access the BCM without damaging your dash panels. No special electronic tools are required for the installation itself.
What happens if the airbag light stays on after installation?
On some GM vehicles, the BCM and the airbag system (SDM) are linked. If the airbag light appears, it simply means they need to be re-synchronized. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.