Is Your GM Truck Plagued by Electrical Gremlins?
Are you experiencing flickering lights, power windows with a mind of their own, or a security system that randomly acts up on your late 90s or early 2000s GM truck or SUV? These frustrating and unpredictable electrical issues often point directly to 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 problems. Don’t let a faulty BCM sideline your reliable Silverado, Sierra, S10, or Blazer. We offer a direct-fit replacement BCM, pre-programmed to your vehicle’s specific VIN, that restores full functionality without a costly and time-consuming trip to the dealership.
Common Symptoms of a Failing BCM
A bad Body Control Module can manifest in numerous ways. If you’re noticing any of the following issues, it’s a strong indicator that your BCM needs replacement:
- ✔ Erratic interior or exterior lights (flickering, staying on, or not working at all).
- ✔ Power windows, locks, or mirrors operating intermittently or failing to respond.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Vehicle security system malfunctions, including false alarms or a no-start condition due to Passlock/VATS errors.
- ✔ Windshield wipers turning on by themselves, operating at the wrong speed, or not responding to the switch.
- ✔ Unexplained warning lights on the dashboard, such as the airbag or brake light.
- ✔ Inconsistent or non-functional gauge cluster operation.
- ✔ Radio or climate control systems behaving erratically.
The Solution: A VIN-Programmed GM Truck Body Control Module
Replacing the BCM isn’t just about swapping hardware. The module must be programmed with the correct software and vehicle-specific information to communicate with other computers in your truck. Our service eliminates this difficult step. When you order, you provide us with your vehicle’s VIN. We then flash this GM Truck Body Control Module with the latest software updates from GM, ensuring it matches your truck’s exact configuration. This makes the installation process as close to plug-and-play as possible, saving you hundreds of dollars in dealership programming fees.
Installation and Required Procedures
Physically installing the BCM is generally straightforward. It is typically located under the dashboard, either in the center (S10/Blazer models) or on the driver’s side (Silverado/Sierra models). After the physical swap, some vehicles may require one or more of the following relearn procedures to ensure all systems function correctly.
- Airbag System Sync: If the airbag warning light illuminates after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM) and must be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be required. This ensures proper brake light function and correct operation of the traction control system.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Fitment for These Models:
- ✔ 1998-2000 S10/S15/SONOMA (center dash, ID 16257125)
- ✔ 1998-2000 BLAZER S10/JIMMY S15 (center dash, ID 16257125)
- ✔ 1999-2000 SILVERADO 1500/2500 PICKUP (LH dash)
- ✔ 1999-2000 SIERRA 1500/2500 PICKUP (LH dash)
- ✔ 2000 ASTRO / SAFARI (GMC) (LH dash)
- ✔ 1999-2000 ISUZU HOMBRE (LH dash)
- ✔ 1998 BRAVADA (center dash, w/extended build date opt ZN4)
This module is a direct replacement for the following part numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 8191536250, 09366801. Matching one of these numbers ensures compatibility.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions. This includes power windows, door locks, interior and exterior lighting, the security system, wipers, and often communicates with the instrument cluster and radio.
Is this BCM truly plug-and-play?
Because we program it to your VIN before shipping, it is as close to plug-and-play as possible. It will have the correct software for your vehicle’s options. However, as noted, some vehicles may require additional relearn procedures for systems like the airbags or brake sensor, which need a professional scan tool.
Where do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
Do I need to send my old BCM back?
No. This product has no core charge. You can keep your original module.
What if my airbag light is on after I install the new BCM?
This is a normal possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag module. A technician with a high-level scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.