Restore Your GM Truck or Van’s Electrical Functions and Reliability
Are you chasing down frustrating electrical gremlins in your 2003-2007 GM vehicle? Intermittent power windows, flickering dash lights, a security system that acts up, or door locks with a mind of their own are all 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 host of confusing and annoying problems. This isn’t just an inconvenience; it can affect the safety and daily usability of your truck or van.
This is your direct-fit, reliable solution. We offer a replacement 2003-2007 GM BCM that arrives at your door programmed specifically to your vehicle’s VIN. We load the latest official GM software, ensuring seamless communication with your vehicle’s other modules and restoring all functions to factory specifications. You get a fully functional part ready for installation, saving you the time, expense, and hassle of a dealership visit for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2006 Silverado 2500 with a perplexing issue: the radio would randomly turn off, the power locks would cycle while driving, and the ‘Service 4WD’ light was on, despite the 4×4 system working mechanically. Scans showed a slew of U-codes (communication errors) pointing to multiple modules. After spending years diagnosing these trucks, my gut told me it wasn’t five different modules failing at once. The common link was the BCM. A failing BCM often floods the data bus with junk information, causing other modules to report errors. We installed a VIN-programmed BCM, cleared the codes, and every single issue was resolved instantly. This is a textbook BCM failure I’ve seen hundreds of times.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights flickering or staying on.
- ✔ The security system or horn activating without reason.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Communication error codes (U-codes) with other modules.
- ✔ Inoperative remote keyless entry (RKE).
- ✔ Wipers or climate control functions behaving unpredictably.
A Straightforward Guide to Your BCM Replacement
Installing your new BCM is a manageable job for a DIYer with basic tools. While locations vary between trucks and vans, the process is similar.
- 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, 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.
- Remove Trim Panels: Carefully remove any plastic trim or kick panels necessary to access the module.
- Disconnect and Remove: Unplug the electrical connectors. They have locking tabs that need to be depressed. Then, unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Post-Installation Steps: Reconnect the battery. Start the vehicle and test all functions (windows, locks, lights, etc.). In some cases, additional relearn procedures for the airbag system or brake pedal position sensor may be required, as detailed below.
Important Post-Installation Information
Because this 2003-2007 GM BCM is central to many systems, a couple of follow-up steps may be necessary depending on your specific vehicle:
- Airbag System Sync: If your airbag warning light is on 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 module.
- Brake Pedal Position Relearn: To ensure correct brake light operation and stability control performance, a brake pedal position sensor relearn might be needed.
Guaranteed Fitment for Your GM Truck or Van
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is compatible with the following models (please check your specific options):
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- GMC Sierra 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- Chevrolet Express 1500/2500/3500 Van (2003-2007, check package options)
- GMC Savana 1500/2500/3500 Van (2003-2007, check package options)
- Chevrolet SSR (2003-2006)
Always verify your part number and vehicle options before ordering to ensure a perfect match.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options from GM. This ensures the module works correctly right out of the box, saving you a trip to the dealership.
Is this part truly plug-and-play?
For most functions, yes. Because it’s pre-programmed, it will restore control over lights, windows, and locks upon installation. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake systems, which requires a capable scan tool.
What happens if my airbag light turns on after I install it?
This indicates the new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Do I need to return my old BCM?
No. There is absolutely no core charge for this part. You can keep your old module, which is great if you want to hold onto it or avoid the hassle of return shipping.
What tools are needed for the installation?
Basic hand tools like a socket set, screwdrivers, and possibly a trim panel removal tool are all that’s typically required to physically replace the module.