Is Your GM Truck or Van Acting Possessed?
Are you dealing with flickering dash lights, power windows with a mind of their own, or a security light that prevents your vehicle from starting? Before you spend a fortune on diagnostics or replace perfectly good parts, the problem is likely a failing Body Control Module (BCM). In my 20+ years as a technician, I’ve seen this exact scenario play out hundreds of times on these otherwise reliable GM workhorses. The BCM is the central hub for your vehicle’s body electronics, and when it fails, it creates a cascade of frustrating and unpredictable electrical gremlins.
Just last week, a 2006 Sierra 2500 was brought into my shop. The owner was frustrated because his interior lights wouldn’t turn off, draining the battery overnight, and the radio would randomly shut off. He suspected a complex wiring issue, but a quick diagnostic scan pointed directly to an internal fault in the BCM. This is a classic failure I’ve diagnosed on everything from Silverado work trucks to Express cargo vans. The original modules are prone to failure from age, heat cycles, and sometimes moisture intrusion.
The Simple, Reliable Solution: A VIN-Programmed BCM
Forget expensive dealership visits and the hassle of finding a shop with the right programming equipment. This 2003-2007 GM BCM arrives at your door ready to install. We take care of the complex part for you. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module with the latest, most stable GM software specific to your truck or van’s options. This ensures all features work exactly as they did from the factory.
- ✔ Plug & Play Installation: Arrives pre-programmed to your VIN. No dealer visit required.
- ✔ Fixes Common Issues: Solves problems with power locks, windows, lighting, security system, and other erratic electrical behavior.
- ✔ Latest GM Software: We load the most current software updates to improve performance and reliability over the original unit.
- ✔ Guaranteed Compatibility: A direct replacement for a wide range of part numbers, ensuring a perfect fit.
Expert Pro Tip: Check for Leaks Before You Install
Before installing your new BCM, especially on Silverado and Sierra pickups where it’s located under the dash, take a flashlight and inspect the area for any signs of water stains or corrosion on the wiring harness. A common failure point is a small, undetected leak from the windshield seal that drips directly onto the BCM. Cleaning the connectors and confirming the area is dry can prevent a repeat failure and save you headaches down the road.
Easy Installation Guide
Getting your vehicle back to 100% is straightforward. While the exact location varies slightly, the process is similar for most models.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronics.
- Locate the BCM: On Silverado, Sierra, and SSR models, it’s typically found under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s usually behind the center dash trim.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Re-attach the negative battery terminal.
Important: Final Steps After Installation
After installing your new 2003-2007 GM BCM, a couple of final procedures are necessary to ensure all vehicle systems communicate correctly. This is critical for safety and full functionality.
- Airbag System Reset: The airbag warning light (SRS light) will likely be on. You must have a qualified technician with a professional scan tool perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes the security handshake between the BCM and the airbag module.
- Brake Pedal Position Sensor Relearn: Some vehicles may require a brake pedal position sensor relearn or recalibration. This ensures the brake lights and stability control systems function correctly. This is also performed with a diagnostic tool.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for the following part numbers:
15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689
It is compatible with a wide range of 2003-2007 Chevrolet and GMC models, including the Silverado 1500/2500/3500, Sierra 1500/2500/3500, Express Van 1500/2500/3500, Savana Van 1500/2500/3500, and the SSR. Please refer to the detailed fitment list to confirm your specific model and options.