Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your GM truck or van? Flickering interior lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. This isn’t just an annoyance; it can lead to a dead battery or even a no-start condition, leaving you stranded. This replacement BCM is the definitive, reliable fix to restore your vehicle’s proper function.
A Technician’s Notebook
I remember a 2005 Silverado 2500 that came into my bay with a complaint of a parasitic battery drain the owner couldn’t track down. Every morning, the battery was dead. He’d already replaced the battery and alternator. After connecting my scan tool, I noticed the BCM wasn’t going to sleep, keeping other modules awake and slowly draining the power overnight. This is a common failure mode I’ve seen dozens of times on these trucks. We installed a VIN-programmed BCM just like this one, and the problem was solved instantly. It’s a textbook example of how a failing 2003-2007 GM BCM can create phantom issues that are impossible to solve without addressing the root cause.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ The security or anti-theft light stays on, potentially causing a no-start issue.
- ✔ Inconsistent interior or exterior lighting (e.g., dome lights won’t turn off).
- ✔ Unexplained battery drain (parasitic draw) that kills your battery overnight.
- ✔ Communication error codes (U-codes) stored in the system, indicating a module is offline.
- ✔ Horn, wipers, or radio behaving erratically or not working at all.
The Easiest Way to Get Back on the Road
Forget expensive dealership visits and the hassle of towing your vehicle for programming. We take care of the hard part for you. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program this BCM with the latest GM-certified software specific to your truck or van. This ensures perfect compatibility with your vehicle’s existing systems and options. It arrives at your door ready to install, saving you hundreds in programming fees and diagnostic time.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On Silverado and Sierra pickups, the BCM is typically found under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it is located in the center of the dash.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair.
Important Post-Installation Information
While this 2003-2007 GM BCM is designed for a simple installation, some vehicles may require additional steps to ensure all systems communicate correctly.
- Airbag System Sync: If your airbag warning light is illuminated 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 certain models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
- No Core Charge: You are not required to send your old BCM back to us. This means no core deposit and no return shipping to worry about.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following models (please check specific options):
- Chevrolet Silverado 1500/2500/3500: 2003-2007 (Classic body style for ’07)
- GMC Sierra 1500/2500/3500: 2003-2007 (Classic body style for ’07)
- Chevrolet Express 1500/2500/3500 Van: 2003-2007
- GMC Savana 1500/2500/3500 Van: 2003-2007
- Chevrolet SSR: 2003-2006
Note: Compatibility may depend on options like Crew Cab, transmission type, and commercial packages. This BCM is programmed specifically for non-Crew Cab trucks and non-commercial tradesman package vans. Please verify your vehicle’s details.
Frequently Asked Questions About the 2003-2007 GM BCM
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to load the exact, factory-correct software and calibrations for your specific vehicle onto the BCM before shipping it.
Do I need any special tools for installation?
For the physical swap, you’ll only need basic hand tools like a socket set or screwdriver to access the module. In some cases, as noted above, a high-level diagnostic scan tool may be needed for post-installation procedures like an airbag system sync.
Is this a plug-and-play part?
Yes, for most vehicles. Because we pre-program it to your VIN, it eliminates the need for dealer programming. You simply install it, and it’s ready to go. However, be aware of the potential post-install procedures mentioned for certain systems.
What happens if I don’t provide my VIN?
We cannot ship the BCM without your VIN. The programming is essential for the module to function correctly in your vehicle. We will contact you after your purchase to get this information.
Do I need to send my old part back?
No. We do not charge a core fee for this BCM. You can keep your original part.
Will this fix my ‘Service 4WD’ light?
While the BCM can be involved in network communication, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the codes pulled to confirm the source of the fault before ordering.