Restore Control and End Electrical Frustrations in Your GM Vehicle
As a technician with over two decades of experience, I’ve seen firsthand the chaos a failing Body Control Module (BCM) can cause. Your 2007-2012 GMC Acadia might feel like it has a mind of its own—windows that won’t roll down, locks that act up, or dashboard lights that flicker for no reason. These aren’t just annoyances; they’re signs that the central command center for your vehicle’s body electronics is failing. This replacement BCM, part number 15093910, is the definitive solution to restore order and get your vehicle operating as it should.
The biggest hurdle in replacing a BCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. Simply provide us with your vehicle’s VIN during checkout, and our experts will program the module with the latest GM software specifically for your Acadia. It arrives at your door ready for installation, saving you hundreds in dealer fees and getting you back on the road faster.
A Technician’s Notebook: The Case of the Haunted Acadia
I once had a 2011 GMC Acadia in my bay that was driving the owner crazy. The radio would randomly shut off, the interior dome lights would stay on, and the security light would flash, occasionally preventing the car from starting. The owner had already replaced the battery and checked all the fuses. A scan tool showed a dozen intermittent communication codes (U-codes) pointing to multiple systems. This is a classic BCM failure signature. The module was creating so much noise on the data bus that other modules couldn’t communicate properly. We installed a VIN-programmed BCM, and instantly, all the bizarre electrical gremlins vanished. It’s a perfect example of how one single component can be the root cause of widespread, confusing issues.
Common Signs of a Failing BCM
- ✔ Power windows, locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light is illuminated, and the vehicle may not start (anti-theft).
- ✔ Dashboard gauges behaving strangely or giving false readings.
- ✔ Communication error codes, such as U0140, U0155, or other U-codes, indicating a loss of communication with the BCM.
- ✔ The horn sounding unexpectedly or not working.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: In the 2007-2012 GMC Acadia, the BCM is typically located on the left (driver’s) side of the dashboard, often behind the lower dash panel near the steering column.
- ✔ Access the Module: You may need to remove a lower dash panel or kick panel to gain clear access to the BCM. These are usually held in by clips or a few small screws.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location. Securely reconnect all the electrical connectors, ensuring they click into place.
- ✔ Final Steps: Reinstall any panels you removed and reconnect the negative battery terminal. Start the vehicle to confirm that the primary functions are restored.
Important Post-Installation Information
While our VIN programming handles the majority of the setup, some GM vehicles may require additional syncing procedures after installation. Please be aware of the following possibilities:
- ✔ Airbag System Sync: If the airbag warning light is on 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 correct brake light and traction control operation.
- ✔ No Core Charge: You are not required to return your old BCM. This saves you the hassle and cost of a core return.
Disclaimer: Vehicle systems can be complex. 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 Body Control Module is a direct replacement for part number 15093910 and other interchangeable part numbers listed below. It fits a wide range of GM vehicles, including but not limited to:
- ✔ GMC Acadia: 2007, 2008, 2009, 2010, 2011, 2012
- ✔ Buick Enclave: 2008-2012
- ✔ Chevrolet Traverse: 2009-2012
- ✔ Saturn Outlook: 2007-2010
- ✔ Chevrolet Impala: 2006-2012
- ✔ Cadillac DTS: 2006-2011
- ✔ Plus many Chevrolet Express, GMC Savana, Cadillac CTS, Tahoe, Yukon, and other models. Please verify your original part number against our cross-reference list to ensure compatibility.
Interchangeable 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
Do I need to do any programming myself?
No. We handle all the programming for you before shipping. Just provide your vehicle’s 17-digit VIN when you order, and the module will arrive ready to be installed.
Is this a difficult part for a DIYer to replace?
For most DIYers with basic tools, this is a manageable job. The main challenge is accessing the BCM, which is usually located under the driver’s side dashboard. No special tools are typically required for the removal and installation itself.
What if my airbag light comes on after I install it?
This is a known possibility on some GM vehicles. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, must be done with a bi-directional professional scan tool.
Do I have to send my old BCM back?
No, there is no core charge for this part. You can keep or dispose of your original module, saving you time and return shipping costs.
How do I know if the BCM is really my problem?
A failing BCM typically causes multiple, seemingly unrelated electrical issues. If your power locks, windows, lights, and security system are all acting up, the BCM is a very likely culprit. A professional diagnosis with a high-end scan tool can confirm by checking for communication codes (U-codes).