Tired of Chasing Electrical Gremlins in Your GM Truck?
If you’re dealing with flickering dash lights, power windows with a mind of their own, or a security system that randomly acts up, you’re not alone. As a technician with over two decades of experience, I’ve seen these exact issues countless times on late 90s and early 2000s GM trucks. The culprit is almost always a failing Body Control Module (BCM). This isn’t just an annoyance; a faulty BCM can affect vehicle security, interior lighting, and even communication between other critical modules, leading to a frustrating and unreliable ride. Don’t let a small computer cause big problems.
This is your direct, reliable solution. We offer a replacement Body Control Module, part number 19153625, that arrives at your door pre-programmed to your truck’s specific Vehicle Identification Number (VIN). This eliminates the need for an expensive trip to the dealership for programming. We handle the complex part, so you can focus on the straightforward installation and get your Silverado, Sierra, or other compatible GM vehicle working correctly again.
A Technician’s Notebook: The Silverado with a Ghost
I remember a 2000 Silverado 2500 that came into the shop with the strangest set of symptoms. The owner said his dome light would stay on for minutes after shutting the door, his radio would randomly lose power, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. We scanned for codes and found a slew of communication errors (U-codes) pointing to an intermittent network issue. After checking the main wiring harnesses, we focused on the BCM. On these trucks, the BCM is the central hub for all those body functions. We swapped in a pre-programmed BCM, and instantly, every single ghost in the machine vanished. It’s a classic case where one component failure creates a dozen confusing symptoms.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome light, dash lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ The security system or keyless entry failing to operate properly.
- ✔ The radio or other dashboard accessories turning on and off unexpectedly.
- ✔ Communication Diagnostic Trouble Codes (DTCs), often in the U-series range (e.g., U1000, U1016).
- ✔ Unexplained battery drain while the vehicle is off.
Your Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most 1999-2000 Silverado/Sierra models, the BCM is located on the driver’s side, up under the dashboard to the left of the steering column.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, remove any bolts or clips holding the module in place.
- ✔ Install the New Module: Seat the new, pre-programmed BCM in the mounting bracket and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, etc.—to confirm proper operation.
Important Post-Installation Note: In some cases, additional steps may be needed. If your airbag light is on, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. A Brake Pedal Position relearn may also be necessary. Always consult a service manual for vehicle-specific details.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801 and is verified to fit the following vehicles:
- ✔ 1998-2000 S10/S15/SONOMA (center dash, ID 16257125)
- ✔ 1998-2000 BLAZER S10/JIMMY S15 (center dash, ID 16257125)
- ✔ 1998 BRAVADA (center dash, w/extended build date opt ZN4)
- ✔ 1999-2000 ISUZU HOMBRE (LH dash)
- ✔ 1999-2000 SILVERADO 1500/2500 PICKUP (LH dash)
- ✔ 1999-2000 SIERRA 1500/2500 PICKUP (LH dash)
- ✔ 2000 ASTRO (LH dash)
- ✔ 2000 SAFARI (GMC) (LH dash)
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer in your truck that acts as a central hub for controlling body-related electronics. This includes power windows, door locks, interior and exterior lighting, the security system, and the wipers, among other things.
Is this module truly plug-and-play?
Yes, this module comes pre-programmed to your vehicle’s VIN. In most cases, you can simply install it and it will work. However, as noted, some vehicles may require an airbag system sync or brake pedal position relearn, which requires a professional 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 program and ship the module without it. Please double-check it for accuracy to ensure compatibility.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
What happens if my airbag light comes on after installation?
This indicates the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A mechanic with a high-level diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.