Restore Full Functionality to Your GM Truck’s Electronics
Are you battling strange and frustrating electrical issues in your late 90s or early 2000s GM truck or SUV? Flickering lights, malfunctioning power windows and locks, a security system that acts up, or even a no-start condition can often be traced back to a single, central component: a failing Body Control Module (BCM). The BCM is the electronic brain for your vehicle’s body-related accessories, and when it starts to fail, it can cause a cascade of seemingly unrelated problems. This replacement Body Control Module, part number 16257125, is the definitive solution to get your vehicle operating reliably again.
From the Diagnostic Bay
We had a 1999 Silverado in the shop that was driving the owner crazy. The interior lights would stay on, draining the battery overnight, and the power locks worked intermittently. The owner had already replaced the battery, door lock actuators, and even the headlight switch with no success. After hooking up our diagnostic scanner, we saw multiple communication error codes pointing to the BCM. A faulty BCM was creating these phantom issues. Once we installed a VIN-programmed GM Truck BCM, all the ghost-in-the-machine problems vanished instantly. It’s a classic case where chasing individual symptoms is futile when the central controller is the real culprit.
Common Failure Symptoms
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ The security or anti-theft system (Passlock/VATS) preventing the engine from starting.
- ✔ The radio or climate control display acting erratically.
- ✔ False warning lights appearing on the instrument cluster.
- ✔ Unexplained parasitic battery drain leading to a dead battery.
Why Choose Our Pre-Programmed GM Truck BCM?
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 with other modules on the network. Our service eliminates the most difficult part of the job. We take care of the programming for you before we ship the part. Simply provide us with your VIN during checkout, and you’ll receive a module that is ready for installation, loaded with the latest software updates from GM. This saves you from expensive dealership programming fees and the hassle of getting your vehicle towed for service.
Simple Installation, Important Considerations
Installation is straightforward for most models, typically involving locating the module under the dash and swapping the electrical connectors. However, on these specific GM vehicles, a couple of post-installation procedures may be necessary to ensure all systems are synchronized.
- Airbag System Sync: If your airbag warning light illuminates after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is required. This is a quick task for any shop with a professional-grade diagnostic tool and ensures the new BCM and the airbag system are properly communicating.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation. This is also a simple procedure performed with a capable scan tool.
This GM Truck BCM is a direct replacement for a wide range of popular vehicles. Please verify your part number and check the fitment list below to ensure compatibility.
This BCM is a direct fit for part number 16257125 and interchanges with the following:
19153625, 8191536250, 191583625, 8093668010, 8162571250, 09366801
Vehicle Fitment:
- ✔ 1998-2000 S10/S15/SONOMA (center dash)
- ✔ 1998-2000 BLAZER S10/JIMMY S15 (center dash)
- ✔ 2000 SAFARI (GMC) (LH dash)
- ✔ 2000 ASTRO (LH dash)
- ✔ 1999-2000 SILVERADO 1500 PICKUP (LH dash)
- ✔ 1999-2000 SIERRA 1500 PICKUP (LH dash)
- ✔ 1999-2000 SILVERADO 2500 PICKUP (LH dash)
- ✔ 1999-2000 SIERRA 2500 PICKUP (LH dash)
- ✔ 1998 BRAVADA (center dash, w/extended build date opt ZN4)
- ✔ 1999-2000 ISUZU HOMBRE (LH dash)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Just provide your vehicle’s VIN when you order, and the module will arrive ready to be installed.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can typically find it on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
My airbag light is on after installing the new BCM. Is the part defective?
No, this is a normal possibility. The new BCM needs to be electronically ‘introduced’ to the airbag’s Sensing and Diagnostic Module (SDM). A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is this a plug-and-play part?
For the most part, yes. The module is programmed to your vehicle, so it will plug in and restore most functions immediately. However, as noted, some vehicles may require the simple airbag sync or brake pedal relearn procedures to finalize the installation.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.