Restore Your Vehicle’s Electrical Functions with a Reliable BCM
Are you dealing with baffling electrical problems in your GM vehicle? Flickering lights, power windows with a mind of their own, a security system that won’t cooperate, or even a vehicle that refuses to start can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your car’s body electronics, a faulty BCM can create chaos. In my 20+ years as a technician, I’ve seen how a single failing module can make a perfectly good car feel unreliable. This isn’t just an inconvenience; it can be a major disruption to your day.
This is your direct-fit, hassle-free solution. We offer a replacement GM Body Control Module that comes pre-programmed specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after purchase, and our experts will flash the module with the latest official GM software and calibrations. This critical step ensures that the BCM communicates perfectly with your vehicle’s other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Case Study: A Tricky Diagnosis
I remember a 2010 Chevy Express 2500 that came into the shop. The owner was frustrated because the van would intermittently fail to crank, the radio would cut out, and the dome lights would stay on, draining the battery. He had already replaced the battery and starter to no avail. After hooking up my diagnostic scanner, I saw a slew of communication error codes (U-codes) pointing to a network issue. The culprit wasn’t the starter or the battery; it was a failing BCM causing a communication breakdown. Swapping in a pre-programmed module like this one had the van running perfectly in under an hour, saving the customer from further guesswork and expense.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ A persistent anti-theft light on the dashboard.
- ✔ Communication Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or U0164.
- ✔ Intermittent no-start or no-crank conditions where the engine seems fine.
- ✔ Wipers or radio functioning improperly.
A Straightforward Guide to Your BCM Installation
- ✔ 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 of these GM models, the BCM is located inside the cabin, typically under the driver’s or passenger’s side of the dashboard, or behind the center console. A quick search for your specific model will confirm its location.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. 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 GM Body Control Module in place and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock in.
- ✔ 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 module is programmed for a simple installation, some GM vehicles require additional relearn procedures. This is normal and part of the vehicle’s security and safety systems.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync 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 operation and to keep the traction control system happy.
Disclaimer: We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Will This Fit My Vehicle?
This module is a direct replacement for a wide range of GM cars, trucks, and SUVs and interchanges with numerous part numbers. Please verify that your vehicle and original part number are listed below. This part 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, 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 about this GM Body Control Module
Do I need to send my old BCM back?
No, there is absolutely no core charge for this part. You can keep your old module.
Is this part difficult to install for a DIYer?
The physical replacement is straightforward for most DIYers with basic tools. The module is typically held in by a few bolts or clips under the dash. The most important part, the programming, is already done for you.
What happens if the airbag light comes on after I install it?
This is a normal security feature on some GM vehicles. The new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to resolve this.
How do you program the module to my vehicle?
After you place your order, you will need to provide us with your 17-digit VIN. We use this number to access the latest GM-certified software for your specific vehicle and flash it directly onto the module before shipping.
Will this fix my car’s no-start problem?
If the no-start is caused by the BCM failing to recognize your key or communicate with the engine computer (a common failure), then yes, this part is the correct solution. It resolves many security-related starting issues.