Solve Your Vehicle’s Electrical Mysteries
Are you chasing electrical gremlins in your GM vehicle? Flickering dashboard lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting? These frustrating issues often point to one central component: a failing Body Control Module (BCM). The BCM is the electronic nerve center for your vehicle’s comfort and convenience features. When it malfunctions, it can create a cascade of confusing problems. This isn’t just an inconvenience; it can affect safety systems like your exterior lights and anti-theft deterrents.
We offer a straightforward, reliable solution. This is a direct replacement GM Body Control Module, professionally programmed with the latest GM software updates specifically for your vehicle. Simply provide us with your VIN during checkout, and we’ll handle the complex programming before it ships. This means you can skip the expensive trip to the dealership and get your vehicle back to normal, faster.
Case Study: The Express Van That Wouldn’t Cooperate
A local contractor brought in his 2009 Express 3500 work van, and he was at his wit’s end. The instrument cluster would flicker on and off, the radio would cut out, and sometimes the van just wouldn’t crank. He’d already replaced the battery and checked the alternator. After connecting my scan tool, I saw multiple U-codes (communication loss) pointing to the BCM. These modules, especially in work vans that see constant use and vibrations, can develop internal solder joint failures. We installed a VIN-programmed BCM, and it was like giving the van a new brain. All the strange electrical issues disappeared instantly. It’s a common failure I’ve seen hundreds of times, and a correctly programmed module is the only proper fix.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- âś” Erratic or non-functional interior and exterior lights.
- âś” Power windows, door locks, or mirrors not working correctly.
- âś” The security or anti-theft light is on, causing a no-start condition.
- âś” Inaccurate readings on the instrument panel gauges.
- âś” Diagnostic Trouble Codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
- âś” Intermittent failure of the horn or remote keyless entry.
A Straightforward Guide to Your BCM Installation
Installing your new GM Body Control Module is a manageable job for a confident DIYer or any professional technician. While locations vary slightly by model (as noted in the fitment list), the general process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most listed vehicles, the BCM is found under the driver’s side dash, near the steering column, or in the center dash area. Consult a service manual for your specific model if you’re unsure.
- 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, windows, locks, etc.—to confirm the repair.
Important Post-Installation Information
Because this module is central to many systems, a couple of additional steps may be required after installation on certain models. This is normal and ensures all related vehicle systems communicate correctly.
- Airbag System Sync: If your airbag (SRS) warning light is illuminated after installation, a simple “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: Some vehicles may require a brake pedal position sensor relearn to ensure perfect operation of the brake lights and traction control system. This is also performed with a scan tool.
Disclaimer: We always recommend consulting a factory service manual or a qualified technician for procedures specific to your vehicle.
Guaranteed Fitment for Your Vehicle
This GM Body Control Module is a direct replacement for a wide range of Chevrolet, GMC, Cadillac, Buick, Saturn, Pontiac, and Hummer models. It replaces the following 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. Please verify your model and year in 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/ESV/EXT 10 (under steering column)
EXPRESS/SAVANA VANS 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)
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 / YUKON XL 1500 10 (under steering column)
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your car that controls most of the non-engine related electronic functions, such as your lights, power windows, security system, door locks, and wipers. It acts as a central hub for these systems.
Why do you need my VIN number?
Every vehicle has unique software and settings for its options (like keyless entry, specific lighting, etc.). We use your Vehicle Identification Number (VIN) to program the BCM with the exact software from GM for your specific vehicle, ensuring it works perfectly right out of the box.
Is this part difficult to install myself?
For someone with basic mechanical skills, it is a very manageable job. The primary challenge is accessing the module, which is usually located under the dashboard. No special tools are needed for the physical replacement, but a scan tool may be needed for post-install procedures on some models.
What if my airbag light comes on after installation?
This is a normal possibility. It simply means the new BCM needs to be electronically introduced to the airbag module (SDM). A procedure called “Setup SDM Primary Key in BCM” can be performed by any professional shop with a compatible scan tool to resolve this.
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, which can be helpful for double-checking part numbers or for any other reason.
Will this fix my car’s no-start problem?
It can. The BCM is often tied into the vehicle’s anti-theft or immobilizer system. If the BCM has failed in a way that affects this system, replacing it can certainly resolve a no-start or intermittent starting issue.