Tired of Chasing Electrical Gremlins? Your Solution is Here.
As a technician with over two decades of experience, I’ve seen it all. A customer comes in with a vehicle that seems possessed: the radio turns on by itself, the power windows have a mind of their own, the security light flashes randomly, or worse, the car won’t start. These aren’t ghosts; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features. When it fails, it creates a cascade of frustrating and unpredictable problems. Stop throwing parts at the issue. This GM Body Control Module is the definitive fix, arriving at your door pre-programmed and ready for installation.
A Technician’s Notebook
“A 2009 Chevy Impala was towed to the shop last month. The owner was at his wit’s end. The battery was new, but the car would be dead every other morning. He also mentioned the dome lights wouldn’t turn off. We ran a parasitic draw test and found a significant drain. After isolating circuits, all signs pointed to the BCM not allowing the vehicle’s networks to go to ‘sleep.’ Instead of a costly diagnostic rabbit hole at the dealership, we installed one of these VIN-programmed modules. The draw was gone, the lights worked perfectly, and the customer drove away with a reliable car and a much smaller bill than he expected. This is a common failure, and a pre-programmed module is the most efficient fix.”
Is Your Vehicle Exhibiting These BCM Failure Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The anti-theft or security system acting up, causing no-start conditions.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers activating on their own or not responding to the switch.
- ✔ False warnings on the instrument cluster (e.g., ‘Door Ajar’).
- ✔ Communication error codes with other modules when scanned.
Your Straightforward BCM Installation Guide
Installing your new GM Body Control Module is a manageable job for a confident DIYer or any professional mechanic. The key is our VIN programming service, which handles the most complex step for you.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side or center of the dashboard. It’s a black plastic box with several large electrical connectors. (Refer to your specific model’s service manual for the exact location).
- Remove the Old Module: Carefully unplug all wiring harnesses. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the wiring harnesses, ensuring each one clicks firmly into place.
- Reconnect & Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test the functions: windows, locks, lights, etc.
CRITICAL: Post-Installation Procedures
After your new BCM is installed, a couple of final steps are required to ensure full system integration and safety. These procedures require a professional-grade scan tool.
- Airbag System (SRS): The ‘Setup SDM Primary Key in BCM’ procedure must be performed. This re-establishes communication between the BCM and the airbag module, which will turn off the airbag warning light on your dash.
- Brake System: Some vehicles may require a ‘Brake Pedal Position Sensor Calibration’ to ensure the brake lights and stability control systems function correctly.
Verified Fitment For These GM Models
This module is a direct replacement for a wide array of GM vehicles and supersedes multiple part numbers. Please verify your vehicle is on this list. Upon purchase, we will require your VIN to ensure perfect programming.
ACADIA (07-12), AVALANCHE (10), CAPRICE (11-13), CAPTIVA SPORT (12), CTS (08-13), DTS (06-11), ENCLAVE (08-12), EQUINOX (07-09), ESCALADE (10), EXPRESS/SAVANA VANS (08-12), G8 (08-09), HUMMER H2 (08-09), IMPALA (06-13), LUCERNE (06-11), MONTE CARLO (06-07), OUTLOOK (07-10), SRX (07-09), STS (10), SUBURBAN (10), TAHOE (10), TORRENT (07-09), TRAVERSE (09-12), VUE (08-10), YUKON (10).
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 before we ship the part. Simply provide your vehicle’s 17-digit VIN at checkout, and we will flash the module with the latest GM software specific to your vehicle’s configuration.
Is this a simple plug-and-play installation?
It is ‘plug-and-programmed,’ but not entirely ‘plug-and-play.’ While the module itself requires no programming, you will need a scan tool to perform the ‘Setup SDM Primary Key’ for the airbag system and potentially a brake pedal calibration after installation. This is a required step for any BCM replacement.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a core component of the Pass-Key/Pass-Lock anti-theft system. A failing BCM is a very common cause of these security-related issues and no-start conditions.
Where do I find my VIN?
Your Vehicle Identification Number (VIN) can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What if I have questions during installation?
We are committed to your success. While we recommend professional installation if you are unsure, our team of experts is here to provide support and guidance based on years of hands-on diagnostic experience.