Is Your GM Truck or Van Acting Possessed?
If you’re dealing with a frustrating mix of electrical gremlins in your 2003-2007 GM vehicle, you’re not alone. I’ve seen it hundreds of times in my shop: the radio cuts out, power windows have a mind of their own, the security light flashes incessantly, or worse, the vehicle won’t start at all. These aren’t random issues; they’re classic symptoms of a failing Body Control Module (BCM).
Expert Pro Tip: Before condemning your BCM, take a moment to inspect the area around it, especially on trucks where it’s under the steering column. A common point of failure I’ve diagnosed over 500 times is water intrusion from a leaking windshield cowl seal. The water drips directly onto the BCM, causing corrosion and short circuits. A simple visual check for water stains or rust on the module’s case can confirm your diagnosis before you even order the part.
The Direct Solution: A VIN-Programmed BCM
Forget expensive dealership diagnostics and programming fees. This is a direct-fit replacement 2003-2007 GM BCM that arrives at your door ready to install. We take care of the hard part for you. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our technicians will flash the module with the latest GM-certified software specific to your truck or van. This ensures all your factory options work exactly as they should from the moment you plug it in.
Common Symptoms of a Failing BCM:
- ✔ Erratic or non-functional power windows and door locks
- ✔ Interior or exterior lights not working correctly
- ✔ Radio or infotainment system randomly shutting off
- ✔ Flashing security or anti-theft light on the dash
- ✔ Intermittent no-start or no-crank conditions
- ✔ False warning messages on the driver information center
Simple Installation Process
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the BCM: On most Silverado and Sierra pickups, it’s located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s typically behind the center dash panel.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. Unbolt or unclip it from its mounting bracket and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM and securely reconnect all electrical connectors.
- Reconnect Power: Reattach the negative battery terminal.
IMPORTANT: Post-Installation Steps Required
After installing your new 2003-2007 GM BCM, additional procedures are necessary to ensure full system functionality and safety. These steps require a professional-grade diagnostic scan tool:
- Airbag System Reset: You must perform the ‘Setup SDM Primary Key in BCM’ procedure. This synchronizes the new BCM with the airbag system (Sensing and Diagnostic Module) and will turn off the airbag warning light.
- Brake Pedal Position Sensor Relearn: Some vehicles may require a recalibration of the brake pedal position sensor to ensure proper brake light operation and stability control function.
We strongly advise consulting your vehicle’s service manual or seeking assistance from a qualified technician to perform these critical final steps.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for part number 15136224 and also interchanges with the following part numbers: 15167329, 15194169, 15747545, 15116065, 15198115, 15136876, and 10367689.
It is compatible with a wide range of GM models, including:
- Chevrolet Silverado 1500/2500/3500 (2003-2007, Classic body style, excluding Crew Cab)
- GMC Sierra 1500/2500/3500 (2003-2007, Classic body style, excluding Crew Cab)
- Chevrolet Express 1500/2500/3500 Van (2003-2007)
- GMC Savana 1500/2500/3500 Van (2003-2007)
- Chevrolet SSR (2003-2006)
Stop letting electrical problems dictate your driving experience. Order your pre-programmed 2003-2007 GM BCM today and restore your vehicle’s proper function and reliability.