Are you chasing down frustrating electrical gremlins in your GM truck? From power windows that have a mind of their own to a security light that keeps you from starting your engine, a failing Body Control Module (BCM) is often the culprit. As the central nervous system for your vehicle’s body electronics, when the BCM goes bad, it can cause a cascade of bizarre and unpredictable problems. This isn’t just an annoyance; it can be a major disruption to your daily work and life.
This is a direct-fit replacement Body Control Module for your GM truck or SUV, delivered to your door fully programmed with the latest GM software updates. We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module specifically for your truck. This means no expensive trips to the dealership for programming and no need for specialized scan tools to get your vehicle running right again.
A Technician’s Notebook
I remember a 2000 Sierra 2500 that came into the shop. The owner was at his wit’s end. The truck would randomly refuse to start, the security light would flash, and the radio presets would wipe themselves clean. He’d already replaced the battery and checked the grounds. After connecting my scan tool, I found multiple U-codes, specifically U1000, indicating a loss of communication. This pointed directly to a network issue, and the BCM is the hub of that network. The internal circuits on these modules can fail from age, heat cycles, and vibration, causing these exact intermittent headaches. Swapping in a pre-programmed BCM fixed every single issue in under an hour.
Is Your Truck Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-functional power windows, door locks, or mirrors
- ✔ Interior or exterior lights staying on or not working at all
- ✔ Flashing security or anti-theft light on the dash
- ✔ Intermittent no-start or no-crank conditions
- ✔ Gauges on the instrument cluster behaving erratically or not working
- ✔ Horn sounding randomly or not working when pressed
- ✔ Communication error codes, such as U1000, stored in the system
Your Straightforward Guide to Installation
Replacing the 1999-2000 Silverado 2500 BCM is a job most DIYers can handle with basic tools. Our VIN programming service makes it a true plug-and-play solution.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most 1999-2000 Silverado and Sierra models, the BCM is located on the driver’s side, up under the dashboard to the left of the steering column.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Seat your new, pre-programmed BCM into the mounting bracket and secure it. Firmly reconnect all electrical harnesses until they click into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and verify that your lights, locks, and other accessories are now functioning correctly.
Important Post-Installation Notes
While our programming handles the critical functions, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- 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 some models, a brake pedal position sensor recalibration might be required to ensure proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a guaranteed fit for the following vehicles and part numbers. Please match your part number (often found on a sticker on your original module) to ensure compatibility.
Replaces Part Numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801
- Chevrolet Silverado 1500/2500 & GMC Sierra 1500/2500 (1999-2000)
- Chevrolet S10 / GMC S15 Sonoma (1998-2000)
- Chevrolet Blazer / GMC Jimmy S15 (1998-2000)
- Oldsmobile Bravada (1998)
- Chevrolet Astro / GMC Safari (2000)
- Isuzu Hombre (1999-2000)
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions to reply with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information.
Is this a plug-and-play part?
Yes! Because we program it to your VIN before shipping, it is designed to be plug-and-play. It will integrate with your truck’s existing systems, including the key’s anti-theft data. In some cases, minor relearn procedures may be needed as described above.
Why is my airbag light on after installation?
The airbag system (SDM) is a critical safety component that requires a secure handshake with the new BCM. If the light is on, it means this link needs to be re-established using a ‘Setup SDM Primary Key’ function on a professional-grade scan tool.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.
Will this fix my 1999-2000 Silverado 2500 BCM problems?
This module is the definitive solution for failures of the BCM itself. If your truck exhibits common symptoms like erratic lights, security system faults, or non-working power accessories, replacing the BCM is the correct repair.