Is Your GM Truck or Van Acting Possessed?
Are your dash lights flickering randomly? Do the power windows and locks have a mind of their own? Maybe you’re dealing with a frustrating security light that prevents your vehicle from starting. These aren’t just annoyances; they’re classic signs that the electronic nerve center of your vehicle—the Body Control Module (BCM)—is failing. When the BCM goes bad, it can cause a cascade of baffling electrical problems that can sideline your truck or van. This isn’t a part you can ignore.
Expert Pro Tip from 20+ Years on the Floor:
I’ve seen hundreds of these 2003-2007 GM trucks and vans come into the shop with bizarre electrical gremlins. A common, and often overlooked, cause of BCM failure is water intrusion. Before you install your new module, take a moment to inspect the windshield seals and the cowl area for any signs of leaks. A few minutes of prevention can save you from having to do this job twice. A damp carpet on the driver’s side is a dead giveaway.
The Simple, Reliable Fix: A VIN-Programmed 2003-2007 GM BCM
Forget about expensive diagnostic fees and programming charges at the dealership. We provide a straightforward solution. This BCM, part number 15198115, is a direct replacement for a wide range of GM vehicles. The best part? We program it specifically to your vehicle’s VIN before we ship it. This ensures it communicates perfectly with your truck’s other systems right out of the box.
- ✔ VIN Programmed for You: Simply provide your VIN at checkout, and we’ll flash the module with the latest GM software for your exact vehicle.
- ✔ Skip the Dealership: This module is ready to be installed upon arrival, saving you time and hundreds of dollars in programming fees.
- ✔ Restores Full Functionality: Get your power windows, locks, interior lights, security system, and other body-related electronics working correctly again.
- ✔ Direct Replacement Guarantee: This unit is a direct fit for multiple original part numbers, including 15167329, 15194169, 15747545, and more.
Easy Installation to Get You Back on the Road
Replacing the BCM is a job most DIYers can handle with basic tools. While locations vary slightly, the process is generally the same.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: In Silverado and Sierra pickups, it’s typically found under the driver’s side of the dashboard, near the steering column. In Express and Savana vans, it’s often located behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the old BCM and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in place and securely reconnect all electrical harnesses. Reconnect the battery terminal.
CRITICAL: Post-Installation Procedures Required
Because this 2003-2007 GM BCM is central to vehicle safety and operation, two final steps are often necessary after installation. These procedures require a professional-grade diagnostic scan tool (not a basic code reader).
- Airbag System Reset: After installation, the airbag warning light will likely be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the new BCM with the airbag system and clear the light.
- Brake Pedal Position Sensor Relearn: Some vehicles may require a ‘Brake Pedal Position Sensor Calibration’ to ensure the brake lights and stability control systems function correctly.
Failure to perform these steps can result in warning lights and compromised safety systems. If you are not equipped to perform these relearn procedures, we recommend seeking assistance from a qualified mechanic after you’ve installed the part.