Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you battling bizarre electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows and locks, or a security system that has a mind of its own? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This replacement GM Body Control Module is the definitive solution, arriving at your door pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership programming, saving you time and money.
Case Study: A Tricky Diagnosis
I remember a 2011 Chevy Impala that came into my shop with a complaint of the battery dying overnight. The owner had already replaced the battery and alternator. A parasitic draw test showed a significant drain, but it was intermittent. After isolating circuits, we traced the draw to the interior lighting and radio, which would sometimes stay on after the car was shut off. A scan tool showed multiple communication loss codes (U-codes) with the BCM. This is a tell-tale sign. The internal logic of the GM Body Control Module had failed, preventing it from properly shutting down accessory circuits. Installing a VIN-programmed BCM like this one solved the draw and all related electrical gremlins in under an hour.
Common Signs of a Failing BCM
If your vehicle’s ‘brain’ for body electronics is failing, you’ll notice. Here are some of the most common symptoms I’ve diagnosed in my 20+ years of experience. A failing BCM can often set communication codes like U0140, U0155, or B1001.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The security system light flashing, preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Erratic instrument cluster behavior, such as gauges sweeping or warning lights appearing randomly.
- ✔ Remote keyless entry (fob) failing to work.
- ✔ Issues with the heating and A/C blower motor controls.
A Straightforward Guide to Your BCM Installation
Replacing your BCM is a manageable job for a DIY enthusiast. Since we program the module to your VIN before shipping, you won’t need any special scan tools for the initial setup. Just follow these general steps:
- 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 compatible GM models, the BCM is located under the driver’s or passenger’s side of the dashboard, often near the steering column or behind the glove box. A quick search for your specific model will confirm the location.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old module. They have locking tabs, so be gentle. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure each one clicks into place.
- Reconnect Power: Reconnect the negative battery terminal.
- Final Checks: Start the vehicle and test all related functions: power windows, locks, lights, horn, and radio. Note that some vehicles may require the additional procedures listed below.
Important Post-Installation Steps
While this is a plug-and-play solution, some GM security and safety systems require a ‘handshake’ with the new module. Depending on your specific vehicle, you may encounter the following:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and traction control operation. This can often be done with a high-end scan tool.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle is on this list and that your original part number is listed below. The ID number on your original module is the most accurate way to confirm fitment.
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, 22860591
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 2500/3500 VAN 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
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 2500/3500 VAN 08-12 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 VIN programming work?
After you place your order, you’ll provide us with your vehicle’s 17-digit VIN. Our technicians then use this information to load the latest GM-certified software onto the module, ensuring it matches your vehicle’s specific options and configuration before we ship it.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module, which can be helpful for reference or as a backup.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a very manageable installation. The most challenging part is often just accessing the module under the dashboard. Since the programming is done for you, no special electronic tools are required for the basic installation.
What if an airbag or brake light comes on after I install it?
This can happen on certain models as the new BCM needs to be synchronized with other vehicle systems. As noted in our post-installation steps, a procedure like the ‘Setup SDM Primary Key’ or ‘Brake Pedal Position Relearn’ may be required using a professional diagnostic tool.
Will this fix my specific problem?
This module corrects issues directly caused by a faulty BCM. If you’re experiencing symptoms like erratic lights, locks, or security system faults, there is a very high probability this will solve the problem. Proper diagnosis is always recommended to rule out wiring or sensor issues.
Is this a new or used part?
This is a high-quality, tested replacement part that is guaranteed to function correctly. Each unit is inspected and programmed with the newest software available from GM for your vehicle.