Is Your GM Vehicle Acting Possessed?
If you’re dealing with a frustrating storm of electrical gremlinsโpower windows with a mind of their own, flickering interior or exterior lights, a security system that randomly immobilizes your vehicle, or door locks that refuse to cooperateโthe culprit is very often a failing Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen these exact symptoms hundreds of times in vehicles just like yours. The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can make your car or truck incredibly unreliable and annoying to drive.
The Simple, Dealer-Free Solution: A Pre-Programmed GM Body Control Module
Forget about towing your vehicle to a dealership, waiting for days, and paying exorbitant fees for programming. We offer a direct, effective solution. This genuine GM Body Control Module is not just a replacement part; it’s a complete, ready-to-install fix. Before we ship it, our experts will program the module with the very latest GM software, using the specific Vehicle Identification Number (VIN) from your car. This ensures perfect communication between the BCM and all other modules in your vehicle, restoring full functionality right out of the box.
Expert Pro Tip: Check for Water Intrusion Before You Install
In my shop, one of the most common causes of BCM failure on these GM platforms is water damage. Before installing your new module, take a moment to inspect the area around the old BCM. Check for dampness in the carpet, signs of rust on nearby brackets, or a stained headliner. A clogged sunroof drain, a bad windshield seal, or a leaking A-pillar can allow water to drip directly onto the BCM, shorting it out. Fixing a small leak now can save you from having to replace the module again down the road.
Common Symptoms of a Failing BCM This Part Will Correct:
- โ Intermittent or non-working power windows, door locks, and mirrors.
- โ Erratic interior dome lights or dashboard illumination.
- โ Headlights, taillights, or turn signals that don’t function correctly.
- โ A false “Security” or anti-theft light that prevents the engine from starting.
- โ Horn sounding unexpectedly or not working at all.
- โ Inaccurate fuel gauge or other instrument cluster readings.
- โ Diagnostic trouble codes (DTCs) related to communication or body electronics.
Easy Installation Process
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work on any electronic component.
- Locate Your BCM: On these GM models, the BCM is typically found in the center dash console (Equinox, Express/Savana Vans), on the left-hand (driver’s) side of the dash (Acadia, Impala, Traverse), or under the steering column (Tahoe, Yukon, Escalade).
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. Unbolt or unclip the module from its mounting bracket and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in place. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect Battery: Reattach the negative battery terminal.
Important Final Steps After Installation
To ensure all systems operate correctly after replacing your GM Body Control Module, a couple of final procedures may be necessary. This is standard for this repair and ensures safety systems are properly initialized.
- Airbag System Reset: The airbag light will likely be on. You will need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes the security handshake between the new BCM and the airbag system.
- Brake Pedal Position Sensor Relearn: Some vehicles require a recalibration of the brake pedal position sensor. This is critical for the proper function of the brake lights and stability control systems.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for a wide range of part numbers. Please verify that your original module has one of the following numbers printed on it to ensure compatibility:
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
This part is confirmed to fit a wide variety of GM vehicles, including many Chevrolet, GMC, Cadillac, Buick, Saturn, Pontiac, and Hummer models. Please use the fitment chart to confirm your specific make, model, and year.