Restore Full Functionality to Your GM Truck or Van
Are you tired of chasing down bizarre electrical gremlins in your Silverado, Sierra, Express, or Savana? From flickering dash lights and erratic power windows to a frustrating no-start condition caused by the security system, a failing Body Control Module (BCM) can make your reliable vehicle feel unpredictable. As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can cause a cascade of issues that are often misdiagnosed. This isn’t just an inconvenience; it affects your vehicle’s core functions and safety systems.
This replacement Body Control Module, part number 15167329, is the definitive solution. It’s not just a part in a box; it’s a complete, ready-to-install fix. We take the hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before it ships. This means no expensive trips to the dealership for programming. You get a BCM loaded with the latest GM software, ensuring seamless communication with your vehicle’s other systems right out of the box.
A Technician’s Notebook: The Case of the Haunted Silverado
A customer brought in his 2006 Silverado 2500 last month with a laundry list of complaints: the radio would turn on and off by itself, the dome light would stay on, and occasionally, the truck would refuse to crank, showing the security light. He’d already replaced the battery and checked the grounds. After connecting my scan tool, I noticed communication errors with multiple systems, all pointing back to one central hub: the BCM. Water intrusion from a leaky windshield seal had corroded a few pins on the module, a common failure point I’ve diagnosed on hundreds of these trucks. Installing a new, VIN-programmed BCM like this one solved every single issue instantly. It’s a perfect example of how one component can be the root cause of many seemingly unrelated problems.
Is Your GM Truck or Van Showing These Symptoms?
A failing BCM is the central nervous system for your vehicle’s electronics. If you’re experiencing any of the following, it’s a strong indicator that your BCM needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light is on, and the engine won’t start.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights (like the airbag light) staying on for no reason.
- ✔ Problems with the HVAC (heating and air conditioning) controls.
- ✔ Inaccurate gauge readings or gauges that stop working altogether.
A Straightforward Guide to Your BCM Installation
This installation is manageable for a seasoned DIYer. The key is taking your time and performing the necessary post-installation procedures. While specific steps can vary, here is a general guide.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow the systems to fully discharge.
- Locate the BCM: On most Silverado and Sierra pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s typically found behind the center dash panel.
- Remove and Replace: Carefully disconnect the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module and secure the new one in its place.
- Reconnect Everything: Firmly plug the electrical connectors into your new BCM. You should hear a click as they lock into place. Reconnect your vehicle’s battery.
- Perform Relearn Procedures: This is a critical step. You will need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ to clear the airbag light. Some vehicles may also require a Brake Pedal Position Sensor recalibration. Failure to do these steps can result in warning lights and improper system function.
Important Post-Installation Requirements
To ensure your vehicle operates correctly and safely after installing your new 2003-2007 GM BCM, two procedures are often necessary. We strongly advise consulting a professional technician if you do not have the proper diagnostic tools.
- Airbag System Reset: The Supplemental Restraint System (SRS) or airbag light will likely be on. You must use a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes communication between the new BCM and the airbag module.
- Brake Pedal Recalibration: On some models, the BCM replacement may require a recalibration of the Brake Pedal Position (BPP) sensor to ensure your brake lights and stability control systems function correctly.
Verified Vehicle Compatibility for Part 15167329
This module is a direct replacement for several part numbers, including 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please check your vehicle’s build options to ensure a perfect match. This part fits a wide range of models:
- Chevrolet Silverado 1500/2500/3500 & GMC Sierra 1500/2500/3500 (2003-2007): Fits most non-Crew Cab models, including the ’07 Classic style. Location is under the steering column. Please verify transmission options (MT or AT 4-speed) as listed in the fitment data.
- Chevrolet Express 1500/2500/3500 & GMC Savana 1500/2500/3500 (2003-2007): Fits models located in the center dash, typically without the commercial tradesman package for 2004-2007.
- Chevrolet SSR (2003-2006): Direct fitment for the Body Control Module.
This is the reliable, long-term fix you’ve been looking for. Order your pre-programmed 2003-2007 GM BCM and restore your vehicle’s electrical health and your peace of mind.
Frequently Asked Questions
How does the VIN programming work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to access the latest GM software for your specific vehicle and flash it directly onto the module before we ship it to you. This ensures it works correctly with your existing options.
Do I need a special tool to install this BCM?
The physical installation requires basic hand tools. However, to complete the job correctly and clear the airbag warning light, you will need a professional-grade diagnostic scan tool capable of performing the ‘Setup SDM Primary Key in BCM’ procedure. Many local repair shops can perform this for you if you don’t own one.
Will this fix my ‘Service 4WD’ message?
While a failing BCM can cause a variety of issues, a ‘Service 4WD’ message is more commonly associated with the Transfer Case Control Module (TCCM) or the encoder motor. It’s important to get a proper diagnosis with a scan tool to confirm the source of the fault codes before ordering parts.
Is this a new or used part?
This is a high-quality, tested replacement part that is guaranteed to restore function. Each unit is inspected and programmed by our expert technicians to ensure reliability and performance that meets or exceeds original specifications.
What happens if I don’t do the airbag relearn procedure?
If you don’t perform the ‘Setup SDM Primary Key’ procedure, the airbag warning light will remain illuminated on your dashboard. More importantly, this indicates the airbag system may not be functioning correctly and may not deploy in the event of a collision. It is a critical safety step.