Restore Your Truck’s Electrical Functions
Are you battling bizarre electrical gremlins in your 1999 or 2000 GM truck? Flickering lights, unresponsive power windows, a malfunctioning security system, or random warning chimes? These are classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your truck’s body electronics, and when it malfunctions, it can trigger a cascade of frustrating and seemingly unrelated problems. This VIN-programmed BCM is the definitive, reliable solution to restore your vehicle’s electronic functions to perfect working order.
Common Symptoms of a Failing BCM
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights behaving erratically (staying on, not turning on, or flickering).
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Unexplained warning lights appearing on the instrument cluster.
- ✔ Issues with the radio, climate control, or driver information center.
- ✔ A battery that drains overnight due to a module not ‘sleeping’.
The Simple, Programmed Solution for Your 1999-2000 Silverado BCM
Don’t let a faulty module sideline your truck or lead to an expensive dealership visit. We provide a direct-fit replacement BCM that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical programming step ensures seamless communication with your truck’s other electronic systems, such as the Engine Control Module (ECM) and instrument cluster. We also flash the module with the latest available software from GM, ensuring optimal performance and reliability right out of the box.
From the Diagnostic Bay
We once had a 1999 Sierra come into the shop where the owner had spent hundreds of dollars replacing both front window motors and switches, yet the windows still wouldn’t work. He was convinced the wiring harness was bad. A quick diagnostic scan revealed communication faults pointing directly to the BCM. A new, programmed BCM not only fixed the windows but also an intermittent dome light issue he’d learned to live with. It’s a powerful reminder that the BCM is often the root cause of many electrical headaches.
Installation and Post-Install Procedures
Replacing your 1999-2000 Silverado BCM is a straightforward process for anyone with basic auto repair experience. The module is typically located on the driver’s side, under the dashboard. The process involves disconnecting the battery, unplugging the electrical connectors from the old module, swapping it with the new one, and reconnecting everything. However, on some GM vehicles of this era, additional electronic ‘relearn’ or ‘sync’ procedures may be necessary after installation.
Important Note: While our VIN programming handles the most critical setup, certain systems may require a final handshake with the new module. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light comes on after installation, the ‘Setup SDM Primary Key in BCM’ procedure will need to be performed with a professional diagnostic tool. This syncs the new BCM with the airbag system’s computer and will turn off the light. This is only required if the light is on.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration may be necessary on some models to ensure proper brake light function and traction control system performance. This also requires a compatible scan tool.
Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Fitment and Compatibility
This Body Control Module is a direct replacement for part number 19153625 and its common alternative, 16257125. It is a confirmed fit for a wide range of GM trucks and SUVs. While this is the correct part for your 1999-2000 Silverado BCM, it also fits:
- 1999-2000 GMC Sierra 1500 & 2500
- 1998-2000 Chevrolet S10 & GMC Sonoma
- 1998-2000 Chevrolet Blazer & GMC Jimmy
- 2000 Chevrolet Astro & GMC Safari
- 1998 Oldsmobile Bravada
- 1999-2000 Isuzu Hombre
To ensure a perfect match, please confirm that your original module’s part number is listed. This is the ultimate fix for your failing BCM, backed by our expert programming service.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your truck’s non-engine related electronic functions. This includes power windows, door locks, interior and exterior lighting, the security system, wipers, and more.
Is this part difficult to install myself?
For someone with basic mechanical skills, the physical swap is straightforward. It’s typically located under the driver’s side dashboard. The main challenge can be the potential need for post-installation electronic procedures, like the airbag sync, which require a professional scan tool.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep or dispose of your original module.
How do I provide my VIN for programming?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential for the part to function correctly in your truck.
Why is VIN programming so important?
VIN programming loads your vehicle’s specific options and security information onto the BCM. Without it, the module won’t be able to communicate correctly with the engine computer and other systems, which can lead to a no-start condition or multiple system failures.