Restore Your Vehicle’s Core Functions
If you’re dealing with baffling electrical issues in your 2011-2013 Chevrolet Caprice—like flickering interior lights, unresponsive power windows, or a security system that has a mind of its own—you’ve likely pinpointed the problem: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can turn your reliable car into a source of daily frustration. This isn’t just an inconvenience; it can affect vehicle security and safety. We offer a dependable, direct-fit solution to get your vehicle back to factory-spec performance without the exorbitant dealership price tag.
This module is professionally programmed to your vehicle’s specific VIN before it ships. This means it arrives at your door ready for installation, loaded with the latest GM software updates. You get a seamless repair that restores functionality and communication between your car’s essential systems. Say goodbye to unpredictable electrical behavior and hello to a smooth, reliable ride.
A Technician’s Notebook
I remember a 2012 Caprice PPV that came into the shop with a classic BCM failure case. The complaint was intermittent no-start and the radio staying on after the key was removed, draining the battery. We traced the issue to a corrupted BCM that was failing to shut down the retained accessory power relay. Instead of a costly diagnostic rabbit hole, we confirmed the BCM was the culprit. A pre-programmed module like this one was the perfect fix. It saved the department time and money, getting the patrol car back in service the same day.
Common Signs of a Failing BCM
A failing BCM can cause a wide range of symptoms that may seem unrelated at first. If your vehicle is experiencing any of the following, a faulty Body Control Module is a likely cause. Common diagnostic trouble codes include U0140, U0155, and other ‘U’ (network) codes.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The vehicle’s security system engaging randomly or the alarm sounding for no reason.
- ✔ Key fob not responding or intermittent remote start failure.
- ✔ Dashboard warning lights appearing erratically, especially for ABS or Airbag systems.
- ✔ Issues with the heating and A/C controls.
Your Straightforward BCM Installation Guide
Installing your new 2011-2013 Caprice BCM is a manageable job for a confident DIYer or any professional technician. Follow these general steps for a successful replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10-15 minutes to allow capacitors to discharge before starting work.
- Locate the BCM: On the 2011-2013 Caprice, the BCM is typically located in the passenger compartment, often under the dashboard on the driver’s or passenger’s side. Consult a service manual for the exact location.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount the new, pre-programmed BCM in the same position as the old one. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, locks, windows, radio, etc.
- Perform Relearn Procedures: If necessary, perform any required post-installation procedures, such as the Airbag System Sync or Brake Pedal Position Relearn mentioned below. This may require a professional scan tool.
Post-Installation Requirements
While this BCM is programmed for your VIN, some vehicle systems may require recalibration after installation to ensure full functionality and safety.
- Airbag System Sync: If the airbag light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn is needed to ensure correct operation of the brake lights and stability control systems.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual for procedures specific to your vehicle.
Verified Fitment For Your Vehicle
This module is a direct replacement for part number 20921435 and is compatible with a wide range of GM vehicles. Please verify your original part number is on this list or that your vehicle is listed 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.
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
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/SAVANA VANS 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)
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
Do I need to send my old BCM back?
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part, which can be helpful for future reference or diagnostics.
Is this BCM truly plug-and-play?
Yes, because we program it to your vehicle’s VIN before shipping, it is designed to be a plug-and-play installation. However, as noted, certain models may require additional relearn procedures for systems like the airbags or brake pedal sensor, which require a professional scan tool.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). This is essential for us to program the 2011-2013 Caprice BCM correctly for your specific vehicle options.
Will this fix my specific electrical problem?
This module will resolve issues directly caused by a failing BCM. If your vehicle is exhibiting several of the symptoms listed above, it is very likely this part is the solution. For a definitive diagnosis, we always recommend consulting with a qualified mechanic or running a full diagnostic scan.