Is Your GM Truck or SUV Experiencing Strange Electrical Problems?
If your 1999-2000 Silverado, Sierra, or other compatible GM vehicle is plagued by flickering lights, malfunctioning power windows and locks, a faulty security system, or intermittent starting issues, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, and when it begins to fail, it can cause a wide range of frustrating and unpredictable symptoms. Don’t let a faulty module keep your truck off the road. This direct-fit, VIN-programmed BCM is the reliable solution to restore your vehicle’s electronic functions to factory-perfect condition.
From the Diagnostic Bay
We had a 2000 Sierra 1500 come into the shop with a classic BCM failure case. The customer complained that his interior lights would stay on, the radio would randomly shut off, and the ‘Security’ light was always flashing, sometimes preventing the truck from starting. He had already replaced the battery and checked all the fuses. After connecting our diagnostic scanner, we saw multiple communication error codes pointing directly to the BCM. We installed one of our VIN-programmed modules, and it was like a new truck. The lights worked correctly, the security system reset, and all the erratic behavior was gone. It’s a common issue on these GMT800 platforms, and a correctly programmed BCM is the definitive fix.
Symptoms of a Failing Body Control Module
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The vehicle’s security system or anti-theft (Passlock) system malfunctioning, causing no-start conditions.
- ✔ The radio or climate control system behaving unpredictably.
- ✔ False warning lights appearing on the instrument cluster.
- ✔ Poor battery life or parasitic draw that drains the battery overnight.
The Simple, Reliable Solution: A Pre-Programmed 1999-2000 Silverado BCM
Replacing a BCM used to mean a trip to the dealership for expensive programming and calibration. We eliminate that hassle. When you order from us, we flash the module with the latest GM software updates and program it specifically to your vehicle’s VIN. This ensures that it is a true plug-and-play installation. There is no need for additional dealer visits or costly diagnostic tools for programming. Simply provide us with your VIN during checkout, and we’ll handle the rest, shipping you a module that is ready to install right out of the box.
This module is a direct replacement for a wide range of GM trucks and SUVs from the 1998-2000 era. It is compatible with multiple part numbers, including 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, and 09366801. Plus, with our no core charge policy, you can keep your original module without the hassle of sending it back.
Installation and Post-Install Considerations
Installation is straightforward for most DIY mechanics. The BCM is typically located under the driver’s side of the dashboard. After disconnecting the battery, you simply unplug the electrical connectors from the old module and plug them into your new, pre-programmed unit. However, please be aware of two potential post-installation procedures:
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This requires a ‘Setup SDM Primary Key in BCM’ procedure to be performed with a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration might be necessary on certain models to ensure proper brake light and traction control functionality.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions and guidance.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors various electronic accessories, such as power windows, locks, lights, the security system, and the climate control. It’s the central hub for your truck’s body electronics.
Do I need to program this BCM?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN when you order, and the module will arrive ready for installation with the latest GM software.
Where is the BCM located on my 1999 Silverado?
On most 1999-2000 Silverado and Sierra models, the BCM is located on the driver’s side, under the dashboard, near the steering column. On S-series trucks and blazers, it may be in the center dash area.
What is the process after I place my order?
After you purchase, you will need to provide us with your 17-digit VIN. We will use this to program the BCM with the correct software and vehicle-specific settings. Once programmed, we will ship the module directly to you.
Will this fix my Passlock security system issue?
A faulty BCM is a very common cause of Passlock security system problems, which can prevent your truck from starting. Replacing the BCM with a correctly programmed unit often resolves these issues.
What if my airbag light comes on after installation?
If the airbag light is on, the BCM needs to be synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be performed by a repair shop with a professional-grade diagnostic tool.