Restore Your Truck’s Brain and Banish Electrical Gremlins
Are you chasing bizarre electrical issues in your Silverado, Sierra, Express, or Savana? Flickering lights, a dead key fob, erratic power windows, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your reliable truck feel haunted. I’ve spent two decades diagnosing these exact problems, and a failing GM Body Control Module is one of the most common culprits I see on these 2003-2007 workhorses.
Don’t waste another weekend tracing wires or another dollar on incorrect diagnoses. This replacement BCM, part number 15198115, is the definitive solution. We take the guesswork and dealership hassle out of the equation. Before we ship, our technicians will program the module with the latest GM software, perfectly matched to your vehicle’s specific VIN. This means it arrives at your door ready for a straightforward installation, saving you time, money, and the frustration of a trip to the dealer for programming.
Case Study: A Tricky Diagnosis
A customer’s 2006 Silverado 2500 came into the shop last month with a list of strange symptoms. The dome light would stay on, the radio presets would randomly reset, and the power door locks worked only intermittently. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed communication errors with several accessory systems, all pointing back to a central hub. We confirmed the GM Body Control Module was failing internally. After installing one of our VIN-programmed modules, every single issue was resolved. The truck’s electronics were stable and reliable again, and the customer drove away with confidence.
Are You Experiencing These Common BCM Failure Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Interior or exterior lights flicker, stay on, or don’t work at all.
- ✔ The horn honks unexpectedly or doesn’t work when pressed.
- ✔ Your keyless entry remote has stopped working.
- ✔ The instrument cluster gauges behave erratically or go dark.
- ✔ Diagnostic trouble codes (DTCs) related to communication or body systems are present.
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 most Silverado and Sierra pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. For Express and Savana vans, it’s typically behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- Post-Installation Procedures: Reconnect the battery. You will need to perform two critical procedures. First, use a compatible diagnostic tool to run the ‘Setup SDM Primary Key in BCM’ function to clear the airbag light. Second, some vehicles may require a brake pedal position sensor relearn. If you’re unsure, consulting a professional or your service manual is recommended.
Verified Vehicle Compatibility
This GM Body Control Module is a direct-fit replacement for a wide range of GM trucks and vans. It is compatible with part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please see the detailed list below to confirm your specific model and options.
Chevrolet Silverado & GMC Sierra Pickups (2003-2007 Classic)
Chevrolet SSR (2003-2006)
Note: Fitment varies based on cab type, transmission, and special packages. This module is primarily for models excluding Crew Cab and certain commercial packages. Please verify your original part number or contact us with your VIN.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related electronic features, such as power windows, lights, door locks, security system, and instrument panel functions.
Is this BCM really plug-and-play?
Yes, because we program it to your vehicle’s VIN before shipping, it eliminates the need for a trip to the dealer for programming. However, you will need to perform post-installation procedures like the airbag system relearn as detailed in the instructions.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program or ship your BCM without it.
What tools are needed for the post-installation procedures?
You will need a professional-grade bidirectional scan tool (like a Tech 2 or equivalent) that can perform security and system relearn procedures for GM vehicles. Many local repair shops can perform this service for you if you don’t have the tool.
Will this fix my ‘Service Airbag’ light?
If the light is on due to a BCM replacement, performing the ‘Setup SDM Primary Key in BCM’ procedure with a proper scan tool will resolve it. If the light is on for another reason (e.g., a bad sensor), this part will not fix that underlying issue.
What if I have a Crew Cab model?
This specific part number is listed for models excluding Crew Cabs. Crew Cab models often use a different BCM due to the extra doors and features. Please verify your original part number to ensure compatibility.