Is Your GM Truck Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, malfunctioning power windows or locks, a security system that acts on its own, or strange warning lights on your dash, the Body Control Module (BCM) is the most likely culprit. The BCM is the central nervous system for your truck’s body electronics, coordinating everything from the interior lights and horn to the anti-theft system. When it begins to fail, it can cause a cascade of frustrating and unpredictable issues that can make your vehicle feel unreliable.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or horn activating randomly.
- ✔ Inaccurate gauge readings or warning lights on the instrument cluster.
- ✔ Communication errors with diagnostic scan tools (No Comm).
- ✔ A persistent parasitic battery drain that kills the battery when parked.
- ✔ The vehicle failing to start due to the anti-theft system not recognizing the key.
The Direct-Fit, Programmed Solution for Your Truck
Don’t let a faulty module keep your truck off the road. This is a direct-replacement Body Control Module for a wide range of GM trucks and SUVs, including the 1999-2000 Sierra BCM. We take the guesswork and hassle out of the repair process. Unlike a generic part from a salvage yard or local parts store, this module comes pre-programmed specifically for your vehicle using the VIN you provide. This ensures that all the original features and functions of your truck are restored correctly, saving you a costly trip to the dealership for programming.
Solving Issues with Your 1999-2000 Sierra BCM
Our process is simple and designed for the DIY mechanic or professional installer. Once you place your order, simply provide us with your vehicle’s 17-digit VIN. Our technicians will flash the module with the latest GM-certified software and vehicle-specific calibration files. This ensures seamless integration with your truck’s other electronic systems, like the Engine Control Module (ECM) and Powertrain Control Module (PCM).
Key Benefits:
- VIN Programmed: Arrives ready for installation, no dealership programming required.
- No Core Charge: You don’t have to worry about the cost or hassle of sending your old, failed part back to us.
- Broad Compatibility: This module replaces a variety of original part numbers, including 19153625, 16257125, 09366801, and more.
- Restored Functionality: Get your lights, locks, windows, and other accessories working reliably again.
Installation and Post-Install Procedures
Installation is straightforward. The BCM is typically located under the driver’s side of the dashboard. After disconnecting the battery, simply unplug the electrical connectors from your old module, remove it, and install the new one in its place. Reconnect the connectors and the battery.
In some cases, additional synchronization or relearn procedures may be necessary after installation. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade scan tool. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper function of the brake lights and traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions and procedures.
Frequently Asked Questions
What does the BCM do on my 1999-2000 Sierra?
The Body Control Module (BCM) acts as the central computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, interior and exterior lighting, the anti-theft system, wipers, and the horn.
Is this BCM truly plug-and-play?
Because we pre-program the module to your vehicle’s VIN, it is as close to plug-and-play as possible. It will not require initial programming at a dealership. However, as noted in the description, some vehicles may require a simple relearn or sync procedure for the airbag or brake systems, which needs a capable scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information.
My original part number isn’t 8093668010. Will this still work?
Yes. This module is a direct replacement for multiple GM part numbers, including 19153625, 16257125, and 09366801, among others listed. As long as your vehicle’s year, make, and model are on the compatibility list, this module will function correctly once programmed to your VIN.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep your original module without any additional fees or hassle.
Why is my airbag light on after installing the new BCM?
The airbag system’s computer (SDM) and the BCM communicate for security purposes. When the BCM is replaced, this link can be broken. A professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to re-establish the connection and turn off the light.