Restore Your Buick’s Electrical System with a VIN-Programmed BCM
Are you tired of dealing with bizarre electrical problems in your 2006-2011 Buick Lucerne? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are classic signs of a failing Body Control Module (BCM). As the central computer for your car’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating ordeal. This isn’t just an annoyance; it can affect systems tied to your vehicle’s safety and security.
Forget the expensive trip to the dealership and the hassle of coordinating programming. We offer a direct, reliable solution. This BCM, part number 15837419, is professionally flashed with the latest GM software updates specifically for your vehicle’s VIN. This ensures seamless integration and restores functionality right out of the box, saving you time and money.
A Technician’s Notebook: The Case of the Haunted Lucerne
I once had a 2008 Buick Lucerne in my bay that was driving its owner crazy. The interior lights would randomly dim and brighten, the radio would shut off, and the power door locks would intermittently fail. The owner had already replaced the battery and checked the alternator. Diagnostics showed a flurry of communication errors (U-codes) but no specific component failure. This is a tell-tale sign. Instead of chasing phantom wiring shorts for hours, we focused on the central hub: the BCM. After swapping in a correctly programmed module, every single one of the ghostly electrical issues vanished. It’s a common failure point I’ve seen on hundreds of these GM platforms, often due to internal circuit board solder joints failing over time.
Common Signs of a Failing BCM
If your vehicle is experiencing these issues, a failing BCM is the likely culprit. A new module can resolve problems that seem unrelated but are all controlled by this central unit.
- ✔ Intermittent or non-working power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system preventing the car from starting.
- ✔ Erratic behavior from the instrument cluster gauges or warning lights.
- ✔ Communication error codes (like U0140, U0155) stored in the system.
- ✔ A/C and climate control functions not responding correctly.
- ✔ Wipers operating on their own or not at all.
Your Straightforward Installation Guide
Installing your new 2006-2011 Lucerne BCM is a manageable task for a confident DIYer. In the Lucerne, the BCM is typically located behind the right side of the dashboard, accessible by removing the glove box assembly.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Access the Module: Remove the glove box and any surrounding trim panels to gain clear access to the BCM. It will have several large electrical connectors attached.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in place of the old one. Securely reconnect all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, windows, locks, wipers, etc.
Important Post-Installation Steps
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and part numbers. Please match your part number or vehicle from the list below to ensure compatibility. The primary fitment is for the 2006-2011 Lucerne BCM.
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
What does a Body Control Module (BCM) do?
What does a Body Control Module (BCM) do?
The BCM is a computer that controls your vehicle’s non-engine-related functions. This includes power windows, locks, lights, wipers, security system, and climate controls. It acts as the central hub for all these convenience and safety features.
Is this module truly plug-and-play?
Yes, it is. We program the module to your vehicle’s specific VIN before shipping. This means you won’t need to take it to a dealer for expensive programming. Simply install it, and it will be ready to function. Some minor relearn procedures may be necessary as detailed above.
What do I need to do after I place my order?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your module without it. You can typically find your VIN on your dashboard (visible through the windshield) or on your vehicle’s registration/insurance documents.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep or dispose of your original module.