Is Your GM Truck Plagued by Electrical Gremlins?
If you’re dealing with bizarre and frustrating electrical issues in your 1999-2000 GMC Sierra, Chevrolet Silverado, or other compatible GM vehicle, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your truck’s body electronics, managing everything from your power windows and door locks to the interior lights and anti-theft system. When it starts to fail, it can create a cascade of problems that seem unrelated and are impossible to diagnose without targeting the source.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security or anti-theft light flashing, preventing the truck from starting.
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Problems with the keyless entry system.
The Direct Solution: A VIN-Programmed 1999-2000 Sierra BCM
Don’t let a faulty module keep your truck sidelined. This Body Control Module is a reliable, direct-fit solution for your vehicle. We take the guesswork out of the repair by pre-programming the unit to your truck’s specific Vehicle Identification Number (VIN) before it ships. This ensures that the module communicates perfectly with your vehicle’s existing systems, just like the original from the factory. It arrives loaded with the latest GM software updates, providing optimal performance and reliability.
Simple Installation Process
Installation is a plug-and-play process. Simply locate your old BCM (typically found under the driver’s side of the dashboard), disconnect the battery, unplug the electrical connectors from the old unit, and plug them into your new, pre-programmed module. Once installed, reconnect the battery. While the physical installation is simple, some vehicles may require additional electronic calibration to ensure all systems are synchronized.
Post-Installation Procedures
In some cases, additional steps with a professional diagnostic tool may be necessary after installation:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a procedure called “Setup SDM Primary Key in BCM” is required to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be needed.
Please note: Specific procedures can vary. We always recommend consulting a factory service manual or a qualified technician for guidance.
Guaranteed Fitment
This BCM is a direct replacement for the following part numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801. It is compatible with a wide range of GM trucks and SUVs, including:
- 1999-2000 Sierra 1500/2500 Pickup
- 1999-2000 Silverado 1500/2500 Pickup
- 1998-2000 S10/S15/Sonoma
- 1998-2000 Blazer S10/Jimmy S15
- 2000 Astro / Safari
- 1998 Bravada
- 1999-2000 Isuzu Hombre
This is the definitive fix for your vehicle’s electrical woes. With our VIN programming service and a no-core-charge policy, you can restore your truck’s functionality quickly and affordably. Provide your VIN at checkout and get back on the road with confidence.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors many of its non-engine-related electronic functions. This includes power windows, locks, lights, the security system, wipers, and more.
Is this module truly plug-and-play?
Yes, because we program it to your vehicle’s VIN, the physical installation is plug-and-play. However, as noted, some vehicles may require a simple electronic relearn procedure for the airbag or brake systems, which needs a compatible scan tool.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship the module until we receive this information, as the programming is specific to your exact vehicle.
Will this fix my security light and no-start issue?
A faulty BCM is a very common cause of security system problems, including a flashing security light and the engine refusing to start. Replacing it with a correctly programmed unit often resolves these issues.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.