Restore Full Electrical Function to Your Chevrolet Caprice
Are you dealing with baffling electrical issues in your 2011-2013 Chevy Caprice? Flickering lights, malfunctioning power windows or locks, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect vehicle security and safety systems. In my 20+ years as a technician, I’ve seen how a failing BCM can mimic a dozen other problems, leading to wasted time and money on incorrect diagnoses.
This is your direct, reliable solution. We offer a genuine GM Body Control Module, part number 20815898, that arrives at your door fully programmed to your vehicle’s specific VIN. By flashing it with the latest GM software updates before shipping, we eliminate the need for an expensive trip to the dealership for programming. This makes the repair process faster, more affordable, and accessible for both professional mechanics and skilled DIYers.
Common Symptoms of a Failing GM BCM
- ✔ Unpredictable interior or exterior lights (staying on or not working at all).
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ The security system light is illuminated on the dash, possibly causing a no-start condition.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140 (Lost Communication with BCM).
- ✔ Wipers activating on their own or failing to respond.
From the Diagnostic Bay: The Case of the Caprice Cruiser
A few months back, a local police department brought in a 2012 Caprice PPV that was driving their officers crazy. The dome lights would flicker intermittently, the radio would cut out, and occasionally, the car would refuse to start after a hot soak. They had already replaced the battery and checked the alternator. My initial scan showed a slew of communication codes. After ruling out wiring issues, I focused on the BCM. In these high-use vehicles, I’ve found that thermal cycles and constant vibration can cause micro-fractures in the BCM’s internal circuit board. We installed a VIN-programmed module, and the vehicle has been back in service without a single electrical gremlin since. It’s a perfect example of how the right part, properly prepared, is the only way to a lasting fix.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge completely.
- ✔ Locate the BCM: On the 2011-2013 Caprice, the Body Control Module is typically located in the cabin, under the driver’s side of the dashboard. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely re-attach the electrical connectors. Ensure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting) and test all body functions: lights, locks, windows, wipers, etc.
Important Post-Installation Information
While our programming handles the majority of the setup, some GM vehicles require additional steps after a new BCM is installed. Please be aware of the following potential procedures:
- Airbag System Sync: If the 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: On some models, a brake pedal position sensor relearn may be required to ensure correct operation of the brake lights and stability control systems.
- No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Guaranteed Vehicle Compatibility
This Body Control Module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle is on the list below. This module is compatible with 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.
- Acadia 2007-2012
- Avalanche 1500 2010 (ID 25892622)
- Caprice 2011-2013
- Captiva Sport 2012
- CTS 2008-2013
- DTS 2006-2011
- Enclave 2008-2012
- Equinox 2007-2009
- Escalade, ESV, EXT 2010
- Express/Savana Vans 2008-2012
- G8 2008-2009
- Hummer H2 2008-2009
- Impala 2006-2013
- Lucerne 2006-2011
- Monte Carlo 2006-2007
- Outlook 2007-2010
- SRX 2007-2009
- STS 2010
- Suburban 1500 2010
- Tahoe 2010
- Torrent 2007-2009
- Traverse 2009-2012
- Vue 2008-2010
- Yukon & Yukon XL 1500 2010
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We program the module to your car’s VIN before we ship it. It arrives ready for installation, saving you time and money.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot ship the module until we receive this information for programming.
Where is the BCM located on a 2011-2013 Caprice?
The BCM is typically found under the dashboard on the driver’s side. You will likely need to remove a lower plastic trim panel to access it.
What if my airbag light is on after I install it?
This is a normal possibility. It means the new BCM needs to be electronically synced with the airbag module (SDM). This requires a ‘Setup SDM Primary Key’ procedure using a professional-grade scan tool.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old module.