Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your GM vehicle? Flickering dash lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting? Before you spend a fortune at the dealership, the problem is likely a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. I’ve seen it hundreds of times in my shop—what looks like a complex wiring nightmare is often just this single component breaking down.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional GM Body Control Module cloning service. You simply send us your original BCM, and we transfer all its critical data—including VIN, security information, and vehicle-specific options—to this fully tested replacement unit. The result? A module that is 100% plug-and-play, requiring no expensive dealership programming or key relearning procedures. We then ship both your original module and the ready-to-install replacement back to you.
A Technician’s Notebook: The Case of the Haunted Impala
A 2011 Impala was brought into my bay with a list of bizarre symptoms: the radio would shut off, the interior lights would pulse, and the power locks worked intermittently. The owner had already replaced the battery and checked the main fuses. A scan showed a U0140 code—Lost Communication With Body Control Module. While this can sometimes be a wiring issue, my experience pointed straight to an internal BCM failure. Instead of a new module and a costly programming session at the dealer, we performed a cloning service. The customer had the car back the next day, all symptoms gone. This service saved them hundreds in parts and labor and eliminated the diagnostic guesswork.
Common Signs of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security light is illuminated, preventing the engine from starting.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ The horn sounding randomly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140.
- ✔ Problems with the keyless entry system or remote start.
Your Straightforward BCM Installation Guide
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: The location varies by model. Common spots include under the driver’s side dash (near the steering column), behind the glove box, or in the center console area. Your fitment details below provide a hint.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that must be depressed to release. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the cloned BCM in the same position as the original. Firmly reconnect all electrical connectors, ensuring they click into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Test Functionality: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair. Note the post-installation procedures below.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some GM systems may require a ‘handshake’ with the new module. This is normal and can often be done with a high-end scan tool.
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the systems. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary for correct brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Vehicle Compatibility
This GM Body Control Module is a direct-fit replacement for the following vehicles and part numbers. Please verify your part number is on this list to ensure compatibility.
Compatible 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 – with specific IDs)
- Caprice (2011-2013)
- Captiva Sport (2012 – with specific IDs)
- CTS (2008-2013)
- DTS (2006-2011)
- Enclave (2008-2012)
- Equinox (2007-2009)
- Escalade, ESV, EXT (2010 – with specific IDs)
- 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 – with specific IDs)
- Tahoe / Yukon / Yukon XL (2010 – with specific IDs)
- Torrent (2007-2009)
- Traverse (2009-2012)
- Vue (2008-2010)
Frequently Asked Questions
What exactly is a cloning service?
Cloning is the process of reading the essential software and vehicle-specific data from your original BCM and writing it directly onto the replacement module. This makes the new module an exact digital copy of the old one, ensuring seamless integration with your vehicle without any additional programming.
Do I need to send my original BCM to you?
Yes, for the cloning service to work, we need your original module to extract the data. We will return your original module along with the newly programmed replacement.
Will I need new keys or have to reprogram my key fobs?
No. Because we clone your original data, the replacement BCM will recognize your existing keys and key fobs. This is one of the biggest advantages over buying a new module from a dealer.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more.
Why is my airbag light on after installation?
The BCM communicates with the airbag system (SDM). Sometimes after a swap, they need to be re-synchronized. This is a standard procedure called ‘Setup SDM Primary Key in BCM’ that can be performed by a technician with a professional diagnostic tool.
What is your policy on the ‘core’?
We do not keep your original module. Our service is a cloning service, not an exchange. Your original part is always returned to you with the programmed replacement unit.