Restore Full Electrical Control to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your late 90s GM vehicle? Flickering lights, malfunctioning power windows and locks, a security system that acts on its own, or an intermittent no-start condition are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing and unpredictable problems. This replacement BCM, part number 16257125, is the definitive solution to restore your vehicle’s factory functions and reliability.
The Plug-and-Play Solution: Programmed to Your VIN
Replacing a BCM isn’t just about swapping hardware. A new module must be programmed with your vehicle’s specific Vehicle Identification Number (VIN) and factory options to communicate correctly with other onboard computers. We handle this critical step for you. Simply provide your VIN after purchase, and our technicians will flash the module with the latest GM software updates specific to your truck or SUV. This ensures a seamless installation process, eliminating the need for an expensive trip to the dealership for programming. Your vehicle will recognize the new BCM as its own, restoring all controlled functions right out of the box.
From the Diagnostic Bay
We had a ’99 Silverado 1500 come in that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and the power locks worked only when they wanted to. The battery would be dead every few mornings. He had already replaced the battery and alternator. After hooking up the scan tool, we saw multiple communication loss codes with the BCM. Instead of a complex wiring issue, the root cause was the BCM itself failing internally and not allowing other modules to ‘sleep,’ causing a parasitic drain. Installing a VIN-programmed BCM like this one solved every single issue in one go. It’s a common failure point that can mimic a dozen other problems.
Common Symptoms of a Failing 1998-2000 GM BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (flickering, staying on, or not turning on).
- ✔ Security or anti-theft system faults, leading to no-start conditions.
- ✔ Inoperative radio or climate control functions.
- ✔ False warning lights on the instrument cluster, such as the airbag light.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Unexplained parasitic battery drain that kills the battery overnight.
Installation and Post-Install Procedures
This module is designed for a straightforward installation. Once you receive the pre-programmed BCM, simply disconnect the negative battery terminal, locate your old BCM (typically under the driver’s or center dash), and swap the units. While our VIN programming covers the essential setup, some vehicles may require a simple relearn procedure after installation. Please be aware of the following possibilities:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation.
We offer a no-core-charge policy, so you can keep your original module. This provides a hassle-free experience without the need to ship back your old part.
Guaranteed Fitment for Part Number 16257125
This BCM is a direct replacement for a wide range of GM vehicles and interchanges with the following part numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801. Please verify your original part number or consult the fitment list below to ensure compatibility.
Compatible Vehicles:
- 1998-2000 S10/S15/SONOMA (center dash)
- 1998-2000 BLAZER S10/JIMMY S15 (center dash)
- 1999-2000 SILVERADO 1500/2500 (LH dash)
- 1999-2000 SIERRA 1500/2500 (LH dash)
- 2000 ASTRO / SAFARI (GMC) (LH dash)
- 1998 BRAVADA (center dash, w/extended build date opt ZN4)
- 1999-2000 ISUZU HOMBRE (LH dash)
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s electronic accessories. It controls functions that are not related to the engine, such as power windows, door locks, interior and exterior lighting, the security system, and the wipers.
Why do you need my VIN?
Your vehicle’s VIN allows us to program the BCM with the exact software and settings it had from the factory. This ensures all your specific options work correctly and that the module can communicate with the other computers in your vehicle, making installation plug-and-play.
Is this BCM difficult to install?
The physical installation is typically straightforward for someone with basic mechanical skills. It involves removing a few dash panels to access the module and swapping the electrical connectors. Since we pre-program it, no special computer programming is needed on your end.
What if my airbag light comes on after I install it?
This can happen on some models. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, must be done with a professional-grade 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, saving you the time and hassle of shipping a core back.