Tired of Chasing Electrical Gremlins in Your GM Vehicle?
As a mechanic with over two decades of diagnostic experience, I’ve seen it all. Flickering dashboard lights, power windows with a mind of their own, a security system that randomly prevents you from starting your car—these aren’t just annoyances; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features. When it starts to fail, it can make your reliable car feel unpredictable and frustrating. Stop throwing parts at the problem and get the definitive solution.
This isn’t just a replacement part; it’s a fully integrated solution. We offer a genuine GM Body Control Module that comes pre-programmed to your vehicle’s specific VIN. This means you can skip the expensive trip to the dealership for programming. We handle the complex part, loading the latest GM software onto the module before it even ships. You get a part that’s ready to restore your vehicle’s functionality right out of the box, saving you time, money, and a major headache.
Case Study: A Tricky Diagnosis
A customer brought in their 2008 Chevy Impala last month with a laundry list of bizarre issues: the radio would turn off randomly, the driver’s side power lock wouldn’t work, and the interior dome light would stay on, draining the battery overnight. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple communication error codes pointing to the BCM. Instead of a costly dealer replacement, we installed a VIN-programmed module just like this one. The swap took less than an hour, and all the strange electrical problems vanished instantly. It’s a repair that provides immense relief for the vehicle owner.
Is Your Vehicle Showing These Classic BCM Failure Signs?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft system light is on, or the vehicle won’t start.
- ✔ Dashboard warning lights (like the airbag light) appearing for no reason.
- ✔ Horn, windshield wipers, or radio behaving unpredictably.
- ✔ Communication error codes (U-codes) stored when checked with a scan tool.
A Straightforward Guide to Your BCM Swap
Installing your new Programmed GM BCM is a manageable job for a confident DIYer. While locations vary, the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before beginning.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s or passenger’s side of the dashboard, or behind a kick panel. A quick search for your specific model will confirm its location.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed to release. Then, unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed module in place and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock in.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Final Steps: Follow the crucial post-installation procedures outlined below to ensure all systems, especially safety systems, are working correctly.
CRITICAL: Post-Installation Procedures Required
To complete the installation and ensure full functionality and safety, the following steps are mandatory. These often require a high-end diagnostic scan tool (common in professional shops).
- Airbag System Reset: You must perform the ‘Setup SDM Primary Key in BCM’ procedure. This step is vital for re-establishing communication between the BCM and the airbag system, which will clear the airbag warning light.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) Sensor to be recalibrated after a BCM replacement. This ensures the brake lights and stability control systems function correctly.
Note: If you are not equipped to perform these relearn procedures, we strongly recommend seeking assistance from a professional mechanic to complete the installation.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for a wide range of part numbers and fits numerous GM vehicles. Please match your part number or vehicle from the list below. After purchase, we will contact you for your VIN to ensure perfect programming.
Replaces 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
- ACADIA 07-12
- AVALANCHE 1500 10
- CAPRICE 11-13
- CAPTIVA SPORT 12
- CTS 08-13
- DTS 06-11
- ENCLAVE 08-12
- EQUINOX 07-09
- ESCALADE / ESV / EXT 10
- EXPRESS 1500/2500/3500 VAN 08-12
- G8 08-09
- HUMMER H2 08-09
- IMPALA 06-13
- LUCERNE 06-11
- MONTE CARLO 06-07
- OUTLOOK 07-10
- SAVANA 1500/2500/3500 VAN 08-12
- SRX 07-09
- STS 10
- SUBURBAN 1500 10
- TAHOE 10
- TORRENT 07-09
- TRAVERSE 09-12
- VUE 08-10
- YUKON / YUKON XL 1500 10
Note: Specific options or IDs may apply. Please verify with the detailed list provided in the original product data if you are unsure.
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related functions. This includes power windows, power locks, interior and exterior lighting, the alarm system, windshield wipers, and more. It acts as a central hub for these electronic features.
Why is providing my VIN so important?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the specific software and settings for your car’s exact configuration, including features like remote start, sunroof, or specific lighting packages. This ensures the new module works seamlessly with your vehicle, just like the original one did.
Is this a true plug-and-play installation?
It’s very close. The module is pre-programmed, which handles the most difficult part. However, as noted above, you will need to perform security, airbag, and sometimes brake system relearn procedures with a compatible scan tool to fully integrate the module and clear any warning lights. This is standard for any BCM replacement.
Can I install this myself if I don’t have a high-end scan tool?
You can perform the physical installation, which is straightforward. However, to complete the job and ensure all systems are operational (and warning lights are off), you will need to take the vehicle to a repair shop to have the final relearn procedures completed.
Will this Programmed GM BCM fix my ‘Service Theft System’ message?
In many cases, yes. A faulty BCM is a very common cause for issues with the Passlock or Passkey anti-theft systems on these GM vehicles. Replacing it with a properly programmed unit often resolves these security-related starting problems.