Are you tired of chasing electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows or locks, a security light that won’t turn off, or even a frustrating no-start condition can often be traced back to one component: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM goes down, it can create a host of confusing and unpredictable problems. This isn’t just an inconvenience; it can affect your vehicle’s security and safety systems.
This is a reliable, direct-fit replacement GM Body Control Module, a solution designed to restore your vehicle’s functionality without the expensive trip to the dealership. The biggest hurdle with BCM replacement has always been the mandatory programming. We eliminate that step for you. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this module with the latest GM software specific to your car or truck. It arrives at your door ready for installation.
Case Study: A Tricky Diagnosis
I remember a 2011 Chevy Impala that came into my shop with a classic case of BCM failure. The customer complained of the radio turning on and off by itself and the anti-theft light staying illuminated, causing an intermittent no-crank condition. We scanned it and pulled a U0140 (Lost Communication With Body Control Module). After verifying the power and ground circuits to the BCM were solid, we knew the module itself was the culprit. Instead of a costly dealer repair, we installed a VIN-programmed BCM just like this one. The vehicle started right up, all electrical functions were restored, and the customer was back on the road the same day for a fraction of the cost.
Is Your Vehicle Showing These Telltale Signs?
- ✔ Erratic or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light is on, preventing the engine from starting.
- ✔ Dashboard gauges providing incorrect readings or not working at all.
- ✔ Horn, wipers, or other accessories activating randomly.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
- ✔ Problems with the keyless entry or remote start systems.
Your Straightforward Installation Guide
- ✔ Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Step 2: Locate the BCM. The BCM is typically found under the driver’s or passenger’s side of the dashboard, often near the steering column or behind the glove box. Consult a service manual for your specific model’s location.
- ✔ Step 3: 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 module from its mounting bracket.
- ✔ Step 4: Install the New Module. Mount the new, pre-programmed BCM in place and securely reconnect all electrical connectors. Ensure they click into place.
- ✔ Step 5: Reconnect and Test. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm proper operation.
Important Post-Installation Information
While this GM Body Control Module is programmed for a simple installation, some vehicles may require additional steps:
- Airbag System Sync: If your 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 certain models, a brake pedal position sensor relearn may be necessary to ensure correct brake light and traction control operation.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a qualified technician.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and supersedes multiple part numbers, ensuring a perfect fit. Please match your vehicle from the list below or verify your original part number against our list.
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
Fits Models Including:
- Acadia (2007-2012)
- Avalanche 1500 (2010)
- Caprice (2011-2013)
- Captiva Sport (2012)
- CTS (2008-2013)
- DTS (2006-2011)
- Enclave (2008-2012)
- Equinox (2007-2009)
- Escalade, ESV, EXT (2010)
- Express/Savana Vans (2008-2012)
- G8 (2008-2009)
- Hummer H2 (2008-2009)
- Impala (2006-2013)
- Lucerne (2006-2011)
- Monte Carlo (2006-2007)
- Outlook (2007-2010)
- SRX (2007-2009)
- STS (2010)
- Suburban 1500 (2010)
- Tahoe (2010)
- Torrent (2007-2009)
- Traverse (2009-2012)
- Vue (2008-2010)
- Yukon / Yukon XL 1500 (2010)
Note: Please verify specific options and IDs mentioned in the original fitment data if applicable to your vehicle.
Frequently Asked Questions
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is essentially the brain for your vehicle’s electronic accessories. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more. When it fails, these systems can behave erratically.
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) allows us to access the specific software and calibration files from GM for your exact vehicle. We program the BCM with this data before shipping, so it communicates correctly with the other modules in your car, saving you a trip to the dealer.
Is this part difficult to install for a DIYer?
For most models, the physical replacement is straightforward, involving simple tools to access the module under the dash. Since we handle the programming, the most complex part of the job is already done for you. Just follow our installation guide and take your time.
What happens if the airbag light comes on after I install it?
This is an infrequent but known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Do I have to return my old BCM?
No. There is no core charge for this part. You can keep your original module.