Restore Your Vehicle’s Electronic Stability
Is your Cadillac, Chevy, or GMC plagued by baffling electrical problems? Flickering dashboard lights, power windows with a mind of their own, or a security system that randomly acts up are classic signs of a failing Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen how a faulty BCM can turn a reliable vehicle into a source of daily frustration. It’s the central command for your car’s comfort and convenience features, and when its internal circuits fail, it creates chaos on the vehicle’s data network.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We eliminate the most frustrating step of the repair: the trip to the dealership. Simply provide your vehicle’s VIN during checkout, and our experts will program this module with the latest, most stable GM software specific to your car. This ensures seamless integration and performance right out of the box, saving you hundreds in dealer programming fees and diagnostic time. Get the reliable fix you need with a part that’s ready for installation upon arrival.
A Technician’s Notebook: The Haunted Impala
I remember a 2011 Impala that came into the shop with what the owner called ‘ghosts’. The radio would change stations, the dome light would fade in and out while driving, and the door locks would cycle at random. The owner had already replaced the battery and checked fuses. A quick scan with a pro-level tool revealed a flood of U-codes—communication errors between modules. This is a tell-tale sign the BCM is failing and flooding the data bus with corrupted signals. We installed a VIN-programmed BCM, and just like that, the ghosts were gone. This single component was the source of all that chaos.
Common Signs of a Failing GM BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. This problem often starts intermittently before becoming a constant issue.
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Instrument cluster lights flickering or warning messages appearing randomly.
- ✔ The security system light stays on, or the vehicle won’t start (displays ‘Service Theft System’).
- ✔ Headlights, taillights, or interior lights not working correctly.
- ✔ Diagnostic trouble codes (DTCs) related to communication, such as U0140, U0155, or other U-codes.
- ✔ Wipers activating on their own or not working at all.
Your Straightforward BCM Installation Guide
For many models, replacing the BCM is a manageable DIY job. While the location varies (check your service manual), the process is generally similar. Here’s a typical workflow for a vehicle like the 2010 STS Body Control Module, which is located in the center dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the Module: On the 2010 STS, the BCM is typically found behind the dashboard panels in the center console area. For other vehicles, it may be under the steering column or behind a kick panel.
- Access and Disconnect: Carefully remove any trim panels needed to access the BCM. You’ll see several multi-pin electrical connectors. Depress the locking tabs on each connector and gently pull them straight out from the module.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket. Install the new, pre-programmed module in its place, ensuring it is secure.
- Reconnect and Reassemble: Firmly plug all electrical connectors back into the new BCM. You should hear or feel a click as they lock into place. Reinstall any trim panels you removed.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and test all functions (lights, windows, locks, etc.). Note the post-installation procedures below, as some relearn steps may be necessary.
Post-Installation Requirements
Because this 2010 STS Body Control Module is pre-programmed, most functions should work immediately. However, for safety and proper operation, be aware of these potential follow-up steps:
- ✔ Airbag System Sync: If your airbag/SRS warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be done with a professional-grade scan tool.
- ✔ Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
- ✔ No Core Charge: You can keep your old part. There is no core charge and no need to return your original module.
Disclaimer: Vehicle systems vary. Always have a factory service manual for your specific model on hand for detailed instructions and diagrams. If you are not comfortable performing this repair, consult a qualified professional mechanic.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for a wide range of GM cars, trucks, and vans. Please verify your vehicle is on this list and that the part number on your original module is listed below.
Compatible 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
Frequently Asked Questions
Why do you need my VIN?
Why do you need my VIN?
Your VIN (Vehicle Identification Number) allows us to program the Body Control Module with the exact software and settings your specific vehicle requires. This ensures all your car’s options work correctly and that the module communicates properly with the other computers on board, making the installation process as simple as possible.
Is this a difficult part to install myself?
Why do you need my VIN?
Your VIN (Vehicle Identification Number) allows us to program the Body Control Module with the exact software and settings your specific vehicle requires. This ensures all your car’s options work correctly and that the module communicates properly with the other computers on board, making the installation process as simple as possible.
Do I need to return my old BCM?
Why do you need my VIN?
Your VIN (Vehicle Identification Number) allows us to program the Body Control Module with the exact software and settings your specific vehicle requires. This ensures all your car’s options work correctly and that the module communicates properly with the other computers on board, making the installation process as simple as possible.
What tools are required for the post-installation procedures?
Why do you need my VIN?
Your VIN (Vehicle Identification Number) allows us to program the Body Control Module with the exact software and settings your specific vehicle requires. This ensures all your car’s options work correctly and that the module communicates properly with the other computers on board, making the installation process as simple as possible.
How can I be sure the BCM is my problem?
Why do you need my VIN?
Your VIN (Vehicle Identification Number) allows us to program the Body Control Module with the exact software and settings your specific vehicle requires. This ensures all your car’s options work correctly and that the module communicates properly with the other computers on board, making the installation process as simple as possible.