2007-2012 Acadia BCM 20921435 | Pre-Programmed Cloning Service

Tired of Your Acadia’s Electrical Gremlins? Here’s the Solution.

As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can make a reliable vehicle like your 2007-2012 GMC Acadia feel completely unpredictable. One day the power windows work, the next they don’t. The security light flashes for no reason, or worse, you’re left with a no-start condition that leaves you stranded. These aren’t random quirks; they’re classic signs of a BCM on its last legs. The BCM is the central nervous system for your vehicle’s comfort and convenience features, and when it fails, it creates a cascade of frustrating problems.

This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional Cloning Service where we take a replacement BCM and program it using your vehicle’s specific VIN. This ensures that all the factory options and security information are perfectly matched to your Acadia. You get a module that’s loaded with the latest GM software updates, solving the problem without an expensive and time-consuming trip to the dealership. This is the definitive fix for those electrical issues that have been plaguing your vehicle.

Is Your Acadia Showing These BCM Failure Signs?

A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, there’s a strong chance your Body Control Module is the culprit:

• ✔ Erratic or non-functional power windows, door locks, and mirrors.
• ✔ Interior or exterior lights flickering, staying on, or not working at all.
• ✔ The anti-theft or security light is illuminated on the dash, possibly causing a no-start.
• ✔ The key fob works intermittently or has stopped working completely.
• ✔ False warnings appearing on the driver information center (e.g., “Service Airbag System”).
• ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes, indicating a loss of communication with other modules.

A Straightforward Guide to Your BCM Swap

Installing your pre-programmed 2007-2012 Acadia BCM is a manageable job for a DIYer with basic tools. Here’s a general guide to get you started:

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: In the 2007-2012 GMC Acadia, the BCM is typically located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel near the steering column.
3. Remove Trim Panels: You will likely need to remove the lower dash panel beneath the steering wheel to gain access. These are usually held in by a few screws and clips.
4. Disconnect and Remove: Carefully disconnect the multiple electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
5. Install the New Module: Bolt your new, pre-programmed BCM into place and reconnect all electrical connectors securely.
6. Final Steps: Reinstall the trim panels and reconnect the negative battery terminal. Start the vehicle and check for proper function of all accessories. Note the post-installation procedures below.

Important Steps After Installation

Because this module is central to many systems, a couple of follow-up procedures may be required. Please note that these often require a professional-grade scan tool.

• ✔ Airbag System Sync: If the airbag warning light is on after installation, a procedure called “Setup SDM Primary Key in BCM” must be performed. This syncs the BCM with the airbag module (SDM) to ensure the safety system is fully operational. This is only needed if the light appears.
• ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn. This recalibrates the sensor to ensure your brake lights and traction control system function correctly.

Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.

Will This Fit My 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, ensuring compatibility. Please verify your vehicle is on this list.

This module also replaces the following 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.