Restore Full Control Over Your Vehicle’s Electronics
Are you dealing with a vehicle that seems to have a mind of its own? Flickering dashboard lights, power windows that won’t cooperate, or a security system that randomly prevents you from starting your car are all classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating guessing game. In my 20+ years in the shop, I’ve seen these modules cause some of the most bizarre electrical gremlins, often leading owners to chase expensive, unnecessary repairs. This isn’t just a part; it’s the solution to restoring order and reliability to your vehicle.
We take the guesswork and high dealership costs out of the equation. This replacement GM Body Control Module arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This means no extra trip to the dealer for expensive programming. It’s designed to be a direct-fit replacement, allowing you to get your car, truck, or van back to functioning as it should.
A Technician’s Notebook: The Haunted 2008 Impala
A customer brought in their ’08 Impala with a complaint that stumped two other shops: intermittent no-start and random flickering of all interior lights, even when the car was off. The battery was new, the alternator tested perfectly, and there were no consistent trouble codes—just a few random U-codes for lost communication. After confirming all major power and ground connections were solid, my experience pointed straight to the BCM. These modules can fail internally, causing data corruption on the network without completely dying. We installed a VIN-programmed BCM, and every single electrical issue vanished instantly. It’s a perfect example of how this single component can be the root of dozens of seemingly unrelated problems.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft system preventing the engine from starting (Security light on).
- ✔ Horn honking unexpectedly or not working.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Warning messages like “Service Electrical System” or “Service Theft System”.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or U0164.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a confident DIYer or any professional mechanic. Our pre-programming service saves you the most complex step.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the BCM: On most compatible GM vehicles, the BCM is located under the driver’s or passenger’s side of the dashboard, or behind the center console area. A quick search for your specific model will confirm its location.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Remove any bolts or clips holding the module in place, then install the new module and securely reconnect all connectors.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Final Steps: Start the vehicle. In some cases, post-installation procedures may be necessary to ensure all systems communicate correctly. Please see the notes below.
Important Post-Installation Procedures
While our programming handles the heavy lifting, some vehicle systems may require a ‘handshake’ with the new BCM. These procedures typically require a bi-directional scan tool.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a procedure called “Setup SDM Primary Key in BCM” is needed to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper operation of the brake lights and stability control system.
- No Core Charge: You are not required to return your old module. This saves you time and the hassle of a core return.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual for instructions specific to your make and model.
Will This Fit My Vehicle?
This BCM is a direct replacement for a wide array of GM vehicles and is interchangeable with numerous part numbers. Please verify your vehicle is on the list below. This module replaces part numbers including: 10382479, 15093910, 15276271, 15837419, 15872388, 20815898, 20921435, 22860591, 25892622, and many more.
EXPRESS VANS 08-12
SAVANA VANS 08-12
IMPALA 06-13
ACADIA 07-12
MONTE CARLO 06-07
TAHOE 10
TRAVERSE 09-12
YUKON / YUKON XL 10
CAPTIVA SPORT 12
DTS 06-11
OUTLOOK 07-10
SUBURBAN 1500 10
ESCALADE / ESV / EXT 10
STS 10
TORRENT 07-09
CTS 08-13
G8 08-09
AVALANCHE 1500 10
LUCERNE 06-11
SRX 07-09
HUMMER H2 08-09
VUE 08-10
CAPRICE 11-13
ENCLAVE 08-12
Frequently Asked Questions About This GM Body Control Module
How does the VIN programming work?
How does the VIN programming work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this VIN to load the exact, factory-correct software and configuration for your specific vehicle onto the BCM. This ensures it communicates properly with the other modules in your car.
Do I have to send my old BCM back?
No. This product comes with no core charge. You can keep your original part, which saves you the cost and hassle of return shipping.
Can I install this myself?
Yes, the physical installation is typically straightforward for someone with basic mechanical skills. It involves locating the module, swapping the electrical connectors, and securing it in place. Since we handle the programming, you avoid the most complex part of the job. However, some models may require post-install relearn procedures with a scan tool.
What do I do if my airbag light is on after installation?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A repair shop with a professional-grade scan tool will need to perform the “Setup SDM Primary Key in BCM” function to sync the systems and turn off the light.