Restore Control and End Electrical Frustration in Your GM Vehicle
Are you tired of dealing with baffling electrical issues in your car, truck, or van? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or an instrument cluster that looks like a holiday light display are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause widespread and unpredictable problems. This isn’t just an annoyance; it can be a significant safety concern. This replacement GM Body Control Module is the reliable, straightforward solution to restore your vehicle’s functionality and your peace of mind.
We take the guesswork and high costs out of the equation. Unlike a trip to the dealership, which involves expensive diagnostics and programming fees, we provide a module that arrives ready for installation. Simply provide your vehicle’s VIN during checkout, and our technicians will program the BCM with the latest GM-certified software specific to your vehicle. This ensures seamless integration and optimal performance right out of the box.
A Technician’s Notebook: The Case of the Haunted Express Van
A local contractor brought in his 2011 Express 3500 work van, complaining of “electrical gremlins.” The dome lights would stay on, the radio would randomly shut off, and worst of all, the power locks would engage and disengage while driving. He was worried tools could be stolen if it unlocked itself while parked. After ruling out wiring issues, we hooked up the scan tool. It was flooded with U-codes—communication errors between modules. This pointed directly to a failing BCM. In my 20 years of experience, I’ve seen this exact scenario hundreds of times. A failing GM Body Control Module creates a communication breakdown on the vehicle’s network, leading to these chaotic symptoms. We installed a VIN-programmed BCM, and within an hour, every single issue was resolved. The van was back on the road, secure and reliable, saving the owner from costly downtime.
Is Your GM Exhibiting These Electrical Issues?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or keyless entry system behaving unpredictably.
- ✔ Warning lights on the dashboard, such as the airbag or ABS light, with no apparent cause.
- ✔ Communication error codes (DTCs) like U0100, U0140, or other U-series codes.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ Radio or climate control systems turning on or off by themselves.
A Straightforward Guide to BCM Installation
For many DIY enthusiasts and professional mechanics, swapping the BCM is a manageable job. While the exact location varies, this guide provides the general steps.
- Safety First: Always 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 compatible models, the BCM is found under the driver’s side of the dashboard, near the steering column or behind a kick panel. On some vans and SUVs, it may be in the center dash area. Your service manual can confirm the exact location.
- 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.
- Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to ensure everything is working correctly.
Important Post-Installation Notes
While our programming handles the majority of the setup, some vehicles may require additional steps after installation:
- Airbag System Sync: If your airbag warning light is illuminated 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 recalibration might be necessary to ensure correct operation of the brake lights and traction control system.
- No Core Charge: You are not required to return your old BCM. This saves you the time, hassle, and expense of a core return.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any part of the process.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle is on the list below. This unit 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.
- 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 1500/2500/3500 Van (2008-2012)
- G8 (2008-2009)
- Hummer H2 (2008-2009)
- Impala (2006-2013)
- Lucerne (2006-2011)
- Monte Carlo (2006-2007)
- Outlook (2007-2010)
- Savana 1500/2500/3500 Van (2008-2012)
- SRX (2007-2009)
- STS (2010)
- Suburban 1500 (2010)
- Tahoe (2010)
- Torrent (2007-2009)
- Traverse (2009-2012)
- Vue (2008-2010)
- Yukon / Yukon XL 1500 (2010)
Frequently Asked Questions
How does the VIN programming process work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to access the correct GM software and flash the module, ensuring it matches your vehicle’s specific configuration and options before we ship it.
Is this a plug-and-play part?
For the vast majority of vehicles, yes. Because we pre-program it, you can typically install it and have it function immediately. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which may require a professional scan tool.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module, which saves you the cost and hassle of return shipping.
Will this fix my ‘Service Airbag’ light?
If the BCM is the cause of the light, this part will resolve the issue. However, after installation, the airbag system may need to be synced with the new BCM using a diagnostic tool to clear the light, as described in the post-installation notes.
What tools are required for installation?
Basic hand tools are typically all that’s needed for the physical installation, such as a socket set and screwdrivers to remove dash panels and the module itself. No special programming tools are required on your end.