Restore Your Vehicle’s Functionality and End Electrical Frustration
Are you dealing with bizarre electrical issues in your GM vehicle? Flickering lights, power windows with a mind of their own, a security system that won’t cooperate, or even a car that refuses to start? These are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and seemingly unrelated problems. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability. Stop chasing electrical gremlins and get the definitive solution.
This is a direct-replacement GM Body Control Module, delivered to your door pre-programmed with the latest GM software updates. We take your vehicle’s VIN and flash the module specifically for your car or truck. This means you can skip the expensive trip to the dealership and avoid their programming fees. It’s a straightforward, cost-effective repair that gets you back on the road with confidence.
From the Diagnostic Bay: The Case of the Haunted Impala
I’ll never forget a 2008 Impala that came into my shop. The owner was at his wit’s end. The radio would turn on and off, the interior lights would flicker while driving, and sometimes the car just wouldn’t crank. He’d already replaced the battery and alternator. After connecting my scan tool, I saw a slew of U-codes (communication errors), specifically a U0140 – Lost Communication With Body Control Module. This told me the other modules couldn’t get a clear signal from the BCM. A quick check of the BCM’s power and ground circuits confirmed they were solid. The culprit was internal failure of the BCM itself, a common issue I’ve seen hundreds of times due to voltage irregularities over the years. A pre-programmed module like this one solved all his problems in under an hour.
Is Your GM Vehicle Showing These Symptoms?
A failing GM Body Control Module can manifest in many ways. If you’re experiencing any of the following, this part is likely the solution you need:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft system light is on, preventing the vehicle from starting.
- ✔ The horn sounds randomly or doesn’t work when pressed.
- ✔ Wipers operate incorrectly or won’t turn off.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
- ✔ A dashboard that is completely dead or displays incorrect information.
A Straightforward Guide to Your BCM Installation
Replacing your BCM is a manageable job for a DIY enthusiast. While the exact location varies, this guide provides the general steps. Always have your vehicle’s service manual for specific details.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On most of these GM models, the BCM is located under the dashboard, often on the driver’s or passenger’s side, or behind the center console. You may need to remove a lower dash panel for access.
- 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 from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical harnesses, ensuring each plug is fully seated and clicks into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Test and Verify: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc.—to ensure everything is working correctly.
- Perform Relearns (If Needed): As noted below, some vehicles may require an Airbag System Sync or Brake Pedal Position Relearn if related warning lights are present after installation.
Important Post-Installation Information
While our programming handles the heavy lifting, some vehicle systems may need to be re-synchronized after the new GM Body Control Module is installed. This is a normal part of the process.
- ✔ 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 BCM with the airbag system.
- ✔ Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn might be necessary to ensure correct brake light and traction control operation.
- ✔ No Core Charge: You are not required to send your old part back. This saves you time and the hassle of a core return.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers, ensuring a perfect match. Please verify your vehicle is on the list below. This part replaces the following 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
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Note: Specific options and IDs may apply. Please match your part number or contact us with your VIN to confirm fitment.
How do I provide my VIN for programming?
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your vehicle’s 17-digit Vehicle Identification Number (VIN). We will use this to program the module with the correct software for your specific vehicle configuration before we ship it.
Is this BCM really a plug-and-play installation?
For the vast majority of vehicles, yes. Because we pre-program it to your VIN, it eliminates the most difficult step. You simply install it, and most functions are restored immediately. In some cases, as mentioned, minor relearn procedures may be needed for systems like the airbags or brake sensor if a warning light appears.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of issues with the GM Pass-Key or Passlock anti-theft systems. If the BCM is failing, it can’t properly communicate with the key’s transponder or other security components, triggering the warning and a no-start condition. Replacing it often resolves these security-related faults.
What happens if I don’t perform the relearn procedures?
If your vehicle requires a relearn and it isn’t performed, you may have a persistent warning light on the dash (like the airbag light) or a system that doesn’t function optimally (like traction control). The vehicle will typically still run and drive, but for full safety and functionality, the procedures should be completed if prompted by a warning light.
Do I need any special tools for the installation?
For the physical swap, you’ll only need basic hand tools like a socket set and screwdrivers to remove the dash panels and unbolt the old module. No special programming tools are required from you, as we handle all the software flashing before shipment.