Restore Your Truck’s Electrical Functions with a Pre-Programmed BCM
Are you battling frustrating electrical gremlins in your 1999-2000 GM truck? Flickering lights, malfunctioning power windows, or a security system that leaves you stranded are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and intermittent issues. This replacement Body Control Module, programmed specifically to your truck’s VIN, is the definitive solution to restore full functionality and reliability to your vehicle.
From the Diagnostic Bay
We had a 1999 Silverado 1500 come into the shop with a classic ‘mystery drain’ on the battery. The owner had replaced the battery and alternator, but every morning, it was dead. After hours of tracing circuits, we found the BCM was keeping the retained accessory power (RAP) relay energized, causing a slow but steady drain overnight. Swapping in a VIN-programmed BCM like this one solved the problem instantly. It’s often these hidden electronic faults that cause the biggest headaches, and a faulty BCM is a frequent culprit.
Common Symptoms of a Failing GM BCM
- ✔ Intermittent or non-working power windows, door locks, and mirrors.
- ✔ Erratic interior lights, headlights, or taillights that flicker, stay on, or won’t turn on.
- ✔ Gauges on the instrument cluster behaving erratically or not working at all.
- ✔ The security or anti-theft system (Passlock/VATS) preventing the truck from starting.
- ✔ Radio, climate controls, or other interior accessories malfunctioning.
- ✔ False warning lights, such as the ‘Service Vehicle Soon’ indicator, appearing on the dash.
The Plug-and-Play Solution for Your Silverado Sierra BCM
Don’t let a faulty module keep your truck off the road. Unlike a generic part from a salvage yard, this BCM is a direct-fit replacement that we program to your vehicle’s specific VIN before it ships. This critical step ensures that the module communicates correctly with your truck’s other computers, retaining all original features and functions without a costly trip to the dealership for programming. Simply provide us with your VIN upon purchase, and we handle the rest, sending you a part that is ready for installation right out of the box.
Installation and Post-Install Procedures
Installation is straightforward for those with mechanical experience. The BCM is typically located under the driver’s side or center of the dashboard. After installing the new module, a couple of system relearns may be necessary depending on your specific vehicle configuration:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure proper operation of the brake lights and traction control system.
We always recommend consulting a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment for Your Vehicle
This BCM is a direct replacement for the following part numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 8191536250, 09366801. It is confirmed to fit a wide range of GM trucks and SUVs, including:
- 1998-2000 S10/S15/Sonoma
- 1998-2000 Blazer S10/Jimmy S15
- 1999-2000 Sierra 1500/2500 Pickup
- 1999-2000 Silverado 1500/2500 Pickup
- 2000 Astro / Safari
- 1999-2000 Isuzu Hombre
- 1998 Bravada
Frequently Asked Questions
Is this BCM ready to install out of the box?
Yes! This Body Control Module is programmed using the VIN you provide, so it arrives ready for installation. In most cases, no further programming is required, though some vehicles may need minor relearn procedures as noted above.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive and validate your VIN.
Will this fix my truck’s security system (Passlock) issues?
A faulty BCM is a very common cause of Passlock security system problems that result in a no-start condition. Replacing it with this correctly programmed module will resolve the issue if the BCM is the root cause.
What happens if the airbag light is on after installation?
If the airbag light appears, it means the new BCM needs to be synchronized with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a repair shop with a professional diagnostic tool.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.