Restore Full Functionality to Your Buick Enclave

If your 2008-2012 Buick Enclave is suffering from baffling electrical problems—like power windows with a mind of their own, flickering interior lights, a security system that won’t disengage, or random warning messages on the dash—the Body Control Module (BCM) is the most likely culprit. As the central hub for your vehicle’s body electronics, a failing BCM can create a cascade of frustrating and unpredictable issues. In my 20+ years as a technician, I’ve seen these modules cause headaches that seem impossible to diagnose, but the solution is often simpler than you think.

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a reliable BCM and program it with the latest official GM software specifically for your vehicle’s VIN. This means you can skip the expensive trip to the dealership, avoid towing fees, and get your luxury SUV back to perfect working order right in your own garage. We handle the complex programming so you can handle the straightforward installation.

Common Signs of a Failing BCM

If you’re experiencing any of the following, a faulty Body Control Module is a strong possibility. A failing BCM can trigger various Diagnostic Trouble Codes (DTCs), most commonly communication errors like U0140, U0155, or other U-codes.

• ✔ Erratic or non-functional power windows, door locks, and mirrors.
• ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
• ✔ The security system or keyless entry failing to operate correctly.
• ✔ Instrument cluster warning lights (like Airbag or ABS) illuminating for no reason.
• ✔ Unpredictable behavior from the radio, climate control, or other interior accessories.
• ✔ A no-start condition where the engine cranks but won’t turn over due to the anti-theft system.

Your Straightforward BCM Installation Guide

Installing your new 2008-2012 Enclave BCM is a manageable job for a confident DIYer. The BCM is typically located on the left-hand (driver’s) side of the dashboard.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
2. Locate the BCM: On the Enclave, you’ll find the BCM under the driver’s side of the dashboard, often mounted to the left of the steering column. You may need to remove a lower dash panel for access.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
4. Install the New Module: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a click as they lock into place.
5. 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, radio, etc.
6. Perform Relearns (If Needed): Start the vehicle. If an airbag light appears or brake functions seem off, you may need to perform the post-installation procedures noted below with a capable scan tool.

Verified Fitment for Your Vehicle

This Body Control Module is a direct replacement for a wide range of GM vehicles and part numbers. We program it specifically for your vehicle. Please ensure your vehicle is on this list. 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

Disclaimer: Post-installation procedures can vary based on your specific vehicle’s year and options. Always consult a factory service manual or a qualified technician if you are unsure about any step of the process.