Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Is your 2008-2012 Chevy Express 2500 Van or another compatible GM vehicle experiencing a baffling array of electrical problems? From power windows that have a mind of their own to interior lights that flicker randomly or a security light that won’t turn off, the cause is often a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create chaos, making your vehicle unreliable and frustrating to drive. In my two decades of experience, I’ve seen these modules cause some of the most confusing diagnostic headaches for both owners and professional technicians.
This is not just a replacement part; it’s a complete, hassle-free solution. We offer a professional Cloning Service for this BCM. Simply send us your original module, and we will transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. We then ship both your original module and the ready-to-install replacement back to you. This process ensures a seamless installation without the need for an expensive trip to the dealership for programming. It’s the most efficient way to get your vehicle back to 100% functionality.
A Technician’s Notebook: The Work Van That Wouldn’t Cooperate
I remember a 2011 Express 2500 that came into the shop with a list of complaints that seemed completely unrelated. The driver said the radio would sometimes shut off, the dome light would stay on, and occasionally, the power locks wouldn’t respond. He was convinced he had multiple different problems. After checking the basics—fuses, grounds, and wiring—my scanner kept showing communication loss with the BCM (DTC U0140). Instead of a dozen small issues, it was one central failure. The BCM was failing internally, corrupting messages on the data bus. A cloned BCM like this one had the van’s electrical systems working in perfect harmony again in under an hour. It’s a classic case of one component causing system-wide chaos.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty Body Control Module is the most likely cause. A failing 2008-2012 Express 2500 BCM can trigger a variety of issues, including communication fault codes like U0140, U0155, or U0100.
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system light stays illuminated, preventing the vehicle from starting.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Dashboard warning lights appearing for no reason.
- ✔ Wipers operating intermittently or at the wrong speed.
- ✔ Problems with the radio or climate control functions.
A Straightforward Guide to Installation
Thanks to our cloning service, installing your replacement BCM is a direct swap. While the exact location varies by model (see fitment list below), the process is generally straightforward for a DIYer with basic tools.
- 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 Express and Savana vans, the BCM is located in the center dash area. On other models like the Impala or Acadia, it’s typically on the left side of the dash or under the steering column.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the replacement BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Post-Install Checks: Start the vehicle and test all body functions—lights, windows, locks, etc. Refer to the ‘Important Post-Installation Notes’ section below for potential relearn procedures.
Important Post-Installation Notes
In some cases, additional steps may be required after installation to ensure all vehicle systems are synchronized correctly.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This is only necessary if the light appears.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
- Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct fit for a wide range of GM vehicles. Please match your vehicle, year, and options from the list below. This module replaces numerous part numbers, ensuring broad compatibility.
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
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08 Body Control (BCM); RH dash
CTS 08-13 Body Control (BCM); LH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-09 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 4.8L, 6.0L, or 6.6L (VIN 6, opt LMM)
EXPRESS 2500 VAN 11-12 Body Control (BCM)
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 4.8L, 6.0L, or 6.6L (VIN 6, opt LMM)
EXPRESS 3500 VAN 11-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-12 Body Control (BCM); (LH dash)
IMPALA 13 Body Control (BCM); (LH dash), ID 22820315
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 4.8L, 6.0L, or 6.6L (VIN 6, opt LMM)
SAVANA 2500 VAN 11-12 Body Control (BCM); (center dash)
SAVANA 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 4.8L, 6.0L, or 6.6L (VIN 6, opt LMM)
SAVANA 3500 VAN 11-12 Body Control (BCM)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
Frequently Asked Questions
Frequently Asked Questions
How does the cloning service work?
After you purchase, we will provide instructions for sending your original BCM to us. We extract the necessary data and flash it onto the replacement module. This makes the new module plug-and-play for your specific vehicle.
Why do you need my original module? Can’t you just program it with my VIN?
Cloning the data from your original module is the most reliable method to ensure all vehicle options and security information are correctly transferred. It prevents compatibility issues that can arise from simple VIN programming, giving you a seamless repair.
Do I get my old BCM back?
Yes. We always return your original, non-working module along with the fully programmed replacement unit. We do not keep your original part.
Is this a difficult part to install for a DIYer?
For most of the listed vehicles, especially the Express/Savana vans, the BCM is accessible with basic tools. Our goal is to make the electronic part of the repair—the programming—completely finished for you, so the physical installation is as simple as possible.
What if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.