End the Electrical Gremlins in Your GM Vehicle
Are you chasing bizarre electrical issues in your car, truck, or van? Flickering dash lights, power windows with a mind of their own, or a security system that randomly prevents your vehicle from starting? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t a part you can ignore—it’s essential for proper vehicle function and safety.
We offer a reliable and straightforward solution. This is a direct-replacement GM Body Control Module that arrives at your doorstep pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money. Simply provide us with your VIN after purchase, and our experts will handle the complex software flashing before it ships.
A Technician’s Notebook: The Haunted 2011 Impala
A customer brought in their 2011 Impala with a battery that would die overnight. They had already replaced the battery and the alternator, but the problem persisted. In my shop, I’ve seen this exact scenario dozens of times. After a parasitic draw test, we traced the issue to the BCM not properly ‘going to sleep.’ It was keeping the interior lights and other small circuits active, slowly draining the battery. We installed one of our pre-programmed BCMs, and the draw disappeared instantly. It’s a textbook example of how a failing GM Body Control Module can mimic other, more common failures.
Is Your Vehicle Showing These BCM Failure Signs?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution. Proper diagnosis is always recommended, but these are the tell-tale symptoms we see every day.
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lighting.
- ✔ The security or anti-theft light is flashing, and the vehicle won’t start (Passlock/Passkey issues).
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Instrument cluster gauges behaving erratically or going dark.
- ✔ Diagnostic trouble codes (DTCs) related to communication, such as U0140 (Lost Communication With Body Control Module).
- ✔ Wipers turning on by themselves or not working when commanded.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer or any professional technician. Our pre-programming service handles the most difficult part for you.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side or passenger’s side of the dashboard, or behind the center console. A quick search for your specific model will confirm its location.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring each one clicks into place.
- 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.
Important Post-Installation Steps
While this GM Body Control Module is sent ready for installation, some vehicles require a final ‘handshake’ between modules. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
- No Core Charge: We make it easy. There is no core charge on this part, so you can keep your original module without the hassle of shipping it back.
Disclaimer: Vehicle systems vary. For procedures specific to your vehicle, always consult a factory service manual or a qualified automotive technician.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and supersedes numerous part numbers, ensuring a perfect fit and function. Please confirm your vehicle is on the list below.
AVALANCHE 1500 10 (under steering column)
CAPRICE 11-13
CAPTIVA SPORT 12 (center dash)
CTS 08-13 (LH/RH dash)
DTS 06-11 (RH center dash)
ENCLAVE 08-12 (LH dash)
EQUINOX 07-09 (center dash)
ESCALADE 10 (under steering column)
ESCALADE ESV 10 (under steering column)
ESCALADE EXT 10 (under steering column)
EXPRESS 1500 VAN 08-12 (center dash)
EXPRESS 2500 VAN 08-12 (center dash)
EXPRESS 3500 VAN 08-12 (center dash)
G8 08-09 (center dash)
HUMMER H2 08-09 (LH firewall)
IMPALA 06-13 (LH dash)
LUCERNE 06-11 (right side dash)
MONTE CARLO 06-07 (LH steering column)
OUTLOOK 07-10 (center dash)
SAVANA 1500 VAN 08-12 (center dash)
SAVANA 2500 VAN 08-12 (center dash)
SAVANA 3500 VAN 08-12 (center dash)
SRX 07-09 (LH dash)
STS 10 (center dash)
SUBURBAN 1500 10 (under steering column)
TAHOE 10 (under steering column)
TORRENT 07-09 (center dash)
TRAVERSE 09-12 (LH dash)
VUE 08-10 (center dash)
YUKON 10 (under steering column)
YUKON XL 1500 10 (under steering column)
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
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls most of your vehicle’s non-engine related electronic features, like power windows, locks, lights, wipers, the security system, and the instrument cluster. It’s the brain behind your car’s creature comforts.
Why is VIN programming so important?
Programming the BCM with your vehicle’s VIN ensures it has the correct software and settings for all the specific options your car was built with. An unprogrammed BCM from a junkyard or generic seller simply will not work correctly. We handle this for you.
Do I need to send my old part back?
No. We do not require you to return your original module. There is no core charge, which saves you time and return shipping costs.
Is this part difficult for a DIYer to install?
For someone comfortable with basic tools and working under a dashboard, the physical installation is straightforward. Our pre-programming service eliminates the most difficult step, but be prepared for the potential need to perform a relearn procedure with a scan tool.
What happens after I place my order?
After you complete your purchase, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians will then program the module with the latest GM software specific to your vehicle before shipping it out.
Why is my airbag light on after installing the new BCM?
This is a normal security feature. The new BCM needs to be electronically introduced to the vehicle’s airbag computer (SDM). This requires a ‘Setup SDM Primary Key’ procedure using a professional-grade scan tool to sync the systems and turn off the light.