Restore Full Electrical Function to Your Buick Lucerne
Are you dealing with baffling electrical problems in your 2006-2011 Buick Lucerne? From power windows that have a mind of their own to a security light that won’t turn off, a failing Body Control Module (BCM) is often the culprit. The BCM is the central nervous system for your vehicle’s comfort and convenience features. When it starts to fail, it can cause a cascade of frustrating and seemingly unrelated issues. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
This is your direct-fit, reliable solution. We offer a genuine GM Body Control Module, part number 15948439, that comes fully programmed to your vehicle’s specific VIN. Before we ship it, our experts flash the module with the latest GM software updates, ensuring seamless communication with your car’s other electronic systems. This crucial step saves you from a costly and time-consuming trip to the dealership for programming.
A Technician’s Notebook
A customer brought in his 2008 Lucerne with a strange combination of problems: the radio would randomly shut off, the driver’s side power lock was inoperative, and the interior dome light would flicker while driving. He had already replaced the battery and checked all the fuses. Diagnostics were tricky because the issues were intermittent. After connecting my scan tool, I noticed communication errors between the BCM and the door module. In my 20+ years of experience, this pattern almost always points to an internal BCM failure. We installed a VIN-programmed BCM, performed the quick post-install procedures, and all the electrical gremlins were gone. It’s a common failure, but one that’s easily fixed with the right part.
Is Your Lucerne Showing These Signs of BCM Failure?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs replacement:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security or anti-theft light is illuminated, potentially preventing the car from starting.
- ✔ Instrument panel gauges behaving erratically or going dark.
- ✔ Horn, wipers, or radio functioning intermittently.
- ✔ False warnings appearing on the driver information center (DIC).
A Straightforward Guide to Installation
Replacing the 2006-2011 Lucerne Body Control Module is a manageable task for a confident DIYer. In the Lucerne, the BCM is typically located on the right side of the dash. Follow these general steps for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow the systems to discharge completely.
- Locate the BCM: On the 2006-2011 Lucerne, you will find the BCM behind the passenger side of the dashboard. Access may require 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 must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely re-attach the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Re-attach the negative battery terminal.
- CRITICAL Post-Installation Steps: After installation, two procedures are often required. First, use a compatible diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the BCM with the airbag system and clears the airbag warning light. Second, a brake pedal position sensor relearn may be necessary to ensure proper brake light and stability control function.
Verified Vehicle Compatibility
While this listing is specifically for the 2006-2011 Lucerne Body Control Module, this part is a common component used across a wide range of General Motors vehicles. It is a direct replacement for numerous part numbers, ensuring broad compatibility. Please verify your part number or use the fitment chart below. This part fits:
Buick:
LUCERNE 06-11
ENCLAVE 08-12
Cadillac:
DTS 06-11
STS 10
CTS 08-13
SRX 07-09
ESCALADE, ESV, EXT 10
Chevrolet:
EQUINOX 07-09
EXPRESS VANS 08-12
IMPALA 06-13
MONTE CARLO 06-07
TAHOE 10
TRAVERSE 09-12
SUBURBAN 1500 10
AVALANCHE 1500 10
CAPTIVA SPORT 12
CAPRICE 11-13
GMC:
SAVANA VANS 08-12
ACADIA 07-12
YUKON / YUKON XL 10
Pontiac:
TORRENT 07-09
G8 08-09
Hummer:
H2 08-09
Saturn:
OUTLOOK 07-10
VUE 08-10
This module replaces part numbers: 10382479, 15093910, 15276271, 15819552, 15828601, 15872388, 15921352, 15948439, 20815898, 22860591, and many more.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your Vehicle Identification Number (VIN) is essential. We use it to program the BCM with the correct software and vehicle-specific options for your Lucerne, ensuring it works perfectly right out of the box.
What happens if I install this without programming?
An unprogrammed BCM will not work correctly. It won’t be able to communicate with the other modules in your car, leading to a no-start condition, persistent warning lights, and non-functional electronics. Our pre-programming service eliminates this problem.
Is this a difficult part to replace myself?
For someone with moderate mechanical skill, the physical replacement is not overly difficult. However, you must be prepared to perform the post-installation procedures (like the SDM key setup) which require a bi-directional scan tool. If you don’t have access to one, you may need assistance from a local mechanic for these final steps.
Will this fix my airbag light?
If the BCM is the cause of the airbag light, this will resolve the root problem. However, after installation, the light will remain on until the ‘Setup SDM Primary Key in BCM’ procedure is completed with a proper scan tool. This re-establishes the security handshake between the new BCM and the airbag module.
How do I send you my VIN after purchase?
After you complete your purchase, simply send us a message with your 17-digit VIN. We will confirm receipt and begin the programming process before shipping your part.