Is Your Vehicle Plagued by Bizarre Electrical Problems?
If your GM vehicle is experiencing strange and unpredictable electrical issues, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and locks to your interior lights and security system. When it starts to fail, it can cause a cascade of frustrating problems that can be difficult to diagnose.
From the Diagnostic Bay
We recently had a 2009 Chevy Express van come in that was driving the owner crazy. The dashboard lights would flicker randomly, the radio would shut off, and sometimes the van wouldn’t start at all, leaving the driver stranded. After checking the battery and alternator, our diagnostics pointed to an internal fault in the BCM. Instead of a costly trip to the dealer for a new module and programming fees, the owner opted for one of our VIN-programmed units. The installation was straightforward, and the van’s electrical gremlins were gone for good. It’s a common story we see, and a reliable replacement BCM is the definitive fix.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system acting up or preventing the vehicle from starting.
- ✔ Warning lights (like the airbag or brake light) appearing on the dash for no reason.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
- ✔ Radio or climate control systems working incorrectly.
Why Choose Our Programmed GM Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle out of the repair by pre-programming this GM Body Control Module to your vehicle’s specific VIN before it ships. This means it arrives at your door with the latest software updates from GM, ready for a simple, plug-and-play installation. You get to bypass the expensive programming and key relearning procedures required by the dealership, saving you significant time and money.
After-Installation Procedures
While our goal is a seamless installation, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If your 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 necessary to ensure your brake lights and traction control function correctly.
This module is a direct replacement for a wide range of part numbers, including: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15880684, 15921352, 15921353, 15948438, 20815898, 22860591, and many more. Please verify your part number and check the fitment list to ensure compatibility.
Frequently Asked Questions
What exactly does this GM Body Control Module do?
The BCM is a computer that controls and monitors many of your vehicle’s non-engine related functions, such as power accessories (windows, locks, seats), lighting, security systems, and warning chimes.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information, as we use it to load the correct software for your specific vehicle.
Is this part difficult to install?
For someone with moderate DIY mechanical skill, the physical installation is typically straightforward. It involves locating the old BCM (often under the dash), disconnecting the battery, swapping the modules, and reconnecting everything. Since we pre-program it, you avoid the complex computer-side of the job.
What if my airbag light comes on after I install it?
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 can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old part back?
No. There is no core charge for this part. You can keep your original module.