Is Your GM Truck Plagued by Baffling Electrical Issues?
If you’re dealing with flickering lights, power windows with a mind of their own, a security light that won’t turn off, or a host of other strange electrical gremlins in your 1999-2000 GM truck or SUV, the culprit is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics. When it starts to fail, it can create a cascade of frustrating and seemingly unrelated problems, making your reliable truck feel unpredictable and unsafe.
Don’t let a faulty module keep you off the road. This is a direct-fit, professionally programmed replacement Body Control Module, designed to restore full functionality to your vehicle’s electronics. We take the guesswork out of the repair by programming the unit to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures compatibility and simplifies the installation process, getting you back behind the wheel faster.
From the Diagnostic Bay
We had a 2000 Sierra 1500 come into the shop with the classic complaint: “My truck is possessed.” The dome lights would stay on, the radio presets would randomly clear, and the horn would honk when using the turn signal. The owner had already replaced the battery and checked all the fuses, convinced it was a wiring short. After hooking up our diagnostic scanner, we saw multiple communication errors all pointing back to one component. A faulty BCM was corrupting the data bus. After installing a VIN-programmed module like this one, all the bizarre electrical issues vanished instantly. It’s a reminder that what seems like multiple problems is often just one central failure.
Common Symptoms of a Failing Silverado 2500 Body Control Module
- ✔ Power windows or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft system light staying illuminated, preventing the engine from starting.
- ✔ Inconsistent or non-functional dashboard gauges.
- ✔ The radio or climate control system behaving unpredictably.
- ✔ A persistent “Service Vehicle Soon” or similar warning light on the dash.
- ✔ False warnings for door ajar or other system alerts.
The Plug-and-Play Solution for Your Truck
Replacing a BCM used to mean a trip to the dealership for expensive programming and calibration. Our service eliminates that step. By providing us with your VIN during checkout, you receive a module that is loaded with the latest GM software updates and is specifically configured for your truck’s factory options. This makes the physical installation a straightforward swap. While most functions will work immediately, some vehicles may require a simple relearn procedure for systems like the airbag or brake pedal position sensor, which can be performed with a compatible high-level scan tool.
Installation and Post-Install Notes
This BCM is typically located on the left-hand (driver’s) side of the dashboard. After installation, please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a “Setup SDM Primary Key in BCM” procedure is necessary to sync the new BCM with the airbag system. This requires a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and traction control functionality.
We also offer a no-hassle policy with no core charge. You can keep your original module without needing to send it back.
Guaranteed Fitment for Part Number 16257125
This module is a direct replacement for part number 16257125 and is also compatible with the following alternate part numbers: 19153625, 8191536250, 191583625, 8093668010, 8162571250, and 09366801. It fits a wide range of GM vehicles, including:
- 1998-2000 S10/S15/Sonoma
- 1998-2000 Blazer S10/Jimmy S15
- 1999-2000 Silverado 1500/2500 Pickup
- 1999-2000 Sierra 1500/2500 Pickup
- 2000 Astro / Safari
- 1998 Bravada
- 1999-2000 Isuzu Hombre
Please verify your original part number or consult the fitment list to ensure compatibility.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you. Simply provide your vehicle’s VIN at checkout, and we will flash the module with the latest GM software specific to your truck before shipping.
Is this a difficult part to install?
The physical replacement is straightforward for someone with basic mechanical skills. It typically involves removing a few dash panels to access the module. The most important part is that our pre-programming service eliminates the need for dealer-level software tools for the initial setup.
What if my airbag light comes on after installation?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag module (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a high-level scan tool to resolve this.
Do I need to return my old BCM?
No, there is absolutely no core charge for this part. You can keep your old module, which can be helpful for reference if needed.
Will this fix my ‘No Start’ problem?
A failing BCM is a very common cause of no-start conditions related to the anti-theft or security system (Passlock). If your security light is flashing or staying on, this module is a highly likely solution.