Restore Your Buick’s Electrical System with a Plug-and-Play Solution
Are you dealing with frustrating and unpredictable electrical issues in your 2006-2011 Buick Lucerne? Flickering interior lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing problems. This isn’t just an annoyance; it can impact your car’s security and daily usability. We offer a dependable, straightforward solution: a replacement BCM, part number 15880684, that arrives at your door fully programmed for your specific vehicle.
A Technician’s Notebook
I remember a 2008 Lucerne that came into my shop with a laundry list of complaints from the owner. The radio would turn on and off, the driver’s side power lock wouldn’t work, and the “Service Theft System” message was constantly on the dash. A quick scan showed a dozen communication codes (U-codes) pointing to a network failure. Instead of chasing each individual problem, experience pointed directly to the BCM. After swapping in a pre-programmed module like this one, every single issue vanished. It’s a perfect example of how one component can be the root of so much electrical chaos, and why a reliable replacement is the only real fix.
Is Your Lucerne Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, it’s highly likely your 2006-2011 Lucerne BCM is the culprit:
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ The security or anti-theft system engaging incorrectly, leading to a no-start condition.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ False warnings on the driver information center (e.g., “Service Airbag,” “Service Theft System”).
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
A Straightforward Guide to Installation
One of the biggest benefits of our service is that this module comes ready to install. No need for an expensive trip to the dealership for programming. For a capable DIYer or any professional technician, the process is simple.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the 2006-2011 Buick Lucerne, the Body Control Module is typically located behind the right side of the dashboard, accessible by removing the glove box assembly.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. Unbolt it from its mounting bracket and remove it. Install the new module in its place, ensuring it is securely mounted.
- Reconnect Everything: Firmly plug the electrical connectors into the new BCM. Reconnect the negative battery terminal.
- Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, etc. Note that some post-installation procedures may be required depending on your vehicle’s configuration.
Important Post-Installation Information
While this module is programmed for plug-and-play functionality, certain vehicle systems may require recalibration after the BCM is replaced.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a simple procedure called “Setup SDM Primary Key in BCM” will be needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure proper operation of the brake lights and traction control system.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This Body Control Module is a direct fit for the 2006-2011 Buick Lucerne and also interchanges with a wide range of other GM vehicles. Please verify your part number and application from the list below.
Interchangeable 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
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, 22860591
CTS 08-13 Body Control (BCM); LH dash / RH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS/SAVANA VANS 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898, 25892622
Frequently Asked Questions
Does this BCM need to be programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for installation.
Where is the BCM located on my 2009 Buick Lucerne?
On the 2006-2011 Buick Lucerne, the BCM is located behind the dashboard on the passenger side. You can typically access it by removing the glove box.
What is a core charge, and do I have to send my old part back?
A core charge is a deposit that is refunded when you return your old part. We do not have a core charge on this BCM, so you can keep your original module.
What if the airbag light comes on after I install the new BCM?
This can happen occasionally. It means the new BCM needs to be electronically synced with the airbag module (SDM). This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be done by a repair shop with a professional diagnostic tool.
Is this part compatible with other GM vehicles?
Yes, this BCM fits a very wide range of GM cars, trucks, and SUVs. Please check the detailed compatibility list and cross-reference your original part number to ensure a perfect match.