Is Your GM Truck or Van Acting Possessed?
Are you dealing with bizarre electrical issues that have you scratching your head? Maybe your power windows have a mind of their own, the interior lights won’t turn off, or the security light is flashing for no reason. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of frustrating and unpredictable problems.
“A customer’s 2005 Silverado 2500 came into my shop last month with the radio turning on and off by itself and the door locks cycling while driving. He’d already replaced the battery and checked all the fuses. After a quick scan, we found communication loss codes pointing straight to the BCM. A failing internal relay was causing power spikes on the data line. Replacing the BCM fixed every single issue. It’s a common failure point I’ve seen on hundreds of these trucks.”
The Direct Solution: A VIN-Programmed 2003-2007 GM BCM
Don’t let a faulty module sideline your workhorse. This Body Control Module is the definitive solution for your 2003-2007 GM truck, van, or SSR. We take all the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM software specific to your vehicle’s options. It arrives at your door ready for installation, saving you a costly trip to the dealership for programming.
Common Symptoms of a Failing BCM:
- ✔ Erratic power windows, door locks, or mirrors
- ✔ Interior dome lights or dashboard lights staying on or not working
- ✔ Horn honking randomly or not working at all
- ✔ “Service Theft System” or security light illuminated
- ✔ Intermittent no-start conditions
- ✔ Communication loss with other modules (DTC U-codes)
Simple Installation to Get You Back on the Road
Replacing the BCM is a straightforward job for a DIYer with basic tools. The location varies slightly by model, but the process is similar.
- Safety First: Always disconnect the negative battery terminal and wait a few minutes before starting work.
- Locate the Module: On Silverado and Sierra pickups, it’s typically found under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s usually 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 BCM: Mount your new, pre-programmed BCM in place and securely reconnect all the electrical harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Final Procedures: Follow the critical post-installation steps outlined below to ensure all systems, like the airbag and brakes, are properly initialized.
CRITICAL: Post-Installation Procedures Required
After installing your new 2003-2007 GM BCM, a few final steps are necessary to ensure complete functionality and safety. These procedures require a professional-grade diagnostic scan tool.
- Airbag System Reset: The airbag light (SRS) will be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure with a scan tool. This re-establishes the security handshake between the new BCM and the airbag module.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated. This ensures the brake lights and stability control system receive accurate input from the pedal.
Note: Failure to perform these steps can result in warning lights and improperly functioning safety systems. If you are not equipped to perform these relearn procedures, we recommend seeking assistance from a qualified local technician after you have installed the part.
This Module is a Direct Replacement for Part Numbers:
15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689