Restore Full Functionality to Your GM Vehicle
Are you dealing with baffling electrical problems in your 2007-2012 GMC Acadia? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or even a no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central nervous system for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable issues. In my 20+ years of diagnostics, I’ve seen how a bad BCM can make a perfectly good vehicle feel unreliable. This isn’t just an inconvenience; it affects your confidence on the road.
We offer a straightforward and dependable solution. This Body Control Module, part number 15948439, is the answer to those electrical gremlins. The best part? We take the biggest headache out of the repair process. Before we ship the module, our technicians will program it with the latest GM software, specifically flashed to your vehicle’s unique Vehicle Identification Number (VIN). This means you can bypass the expensive and time-consuming trip to the dealership for programming. You get a part that’s ready for installation, designed to restore your vehicle’s systems to their original operating condition.
A Technician’s Notebook: The Case of the Haunted Acadia
A customer brought in their 2011 Acadia complaining of ‘hauntings.’ The interior lights would fade in and out while driving, the radio would randomly shut off, and occasionally, the liftgate wouldn’t open. They had already replaced the battery, suspecting a simple voltage issue. After connecting my scan tool, I saw multiple communication loss codes with various modules, all pointing back to the BCM. The BCM wasn’t failing completely, but it was intermittently dropping communication, causing these ghost-like problems. We installed a VIN-programmed 2007-2012 Acadia Body Control Module, performed the necessary security and airbag key relearns, and the vehicle was exorcised. It’s a classic example of how this single component can be the root of a dozen different symptoms.
Is Your Vehicle Exhibiting These BCM Failure Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module may need replacement:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ The horn sounding unexpectedly.
- ✔ Dashboard warning lights (like the airbag light) staying on.
- ✔ The engine cranks but refuses to start due to a security system fault.
- ✔ Communication errors with other vehicle modules when checked with a scan tool.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable task for an experienced DIYer. With our pre-programmed module, you’ve already handled the most difficult step. Follow this general guide for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow capacitors to discharge before starting any electrical work.
- Locate the BCM: On the 2007-2012 Acadia, the BCM is typically located on the left-hand (driver’s) side of the dash, often near the steering column or behind the lower dash panel.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module. Use a non-marring trim removal tool to avoid scratching your interior.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to 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 reconnect all electrical connectors, ensuring they click securely into place.
- Perform Final Procedures: Reconnect the battery. You will now need to perform a few critical relearn procedures with a capable diagnostic scan tool. This includes the ‘Setup SDM Primary Key in BCM’ to clear the airbag light and, on some models, a Brake Pedal Position Sensor Calibration. These steps are essential for safety and full functionality.
Guaranteed Vehicle Compatibility
This BCM is a direct replacement for a wide range of General Motors vehicles. Please verify your part number and model from the list below to ensure a perfect fit. This module is compatible with 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, and 95151084.
It fits models including, but not limited to:
- ✔ 2007-2012 ACADIA
- ✔ 2008-2012 ENCLAVE
- ✔ 2009-2012 TRAVERSE
- ✔ 2007-2010 OUTLOOK
- ✔ 2006-2013 IMPALA
- ✔ 2008-2012 EXPRESS & SAVANA VANS
- ✔ 2007-2009 EQUINOX & TORRENT
- ✔ Various Cadillac, Hummer, and other GM models (please check the full list in the provided data).
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle the programming for you. Simply provide your vehicle’s VIN at checkout, and we will flash the module with the latest GM software specific to your car before shipping it.
What tools are required for the post-installation procedures?
You will need a professional-grade bidirectional scan tool to perform the ‘Setup SDM Primary Key in BCM’ for the airbag system and the Brake Pedal Position Sensor Calibration. Many local repair shops can perform this service if you do not own one.
Is this a new or used part?
This is a high-quality, tested, and verified used component that has been professionally programmed to function like new, ensuring reliability and proper operation.
Will this fix my ‘Service Airbag’ light?
If the light is on due to a BCM failure or because the BCM was replaced, yes. After installation, the SDM Primary Key setup procedure must be completed with a scan tool to sync the BCM with the airbag system and turn off the light.
What happens if I don’t provide my VIN?
Providing your VIN is mandatory for this purchase. We cannot program or ship the module without it, as the programming is essential for the part to function in your vehicle. This ensures you receive a correct and working part.
How hard is the physical installation?
For someone with basic mechanical skills and trim removal tools, the physical swap is not overly difficult. It involves removing some dash panels and unplugging connectors. The most technical part is the post-install electronic relearn procedures.