Is Your GM Truck or SUV Experiencing Strange Electrical Problems?
If you’re dealing with flickering lights, malfunctioning power windows, or a security system with a mind of its own, a failing Body Control Module (BCM) is the most likely culprit. In vehicles like the 1998-2000 S10 Blazer, Jimmy, Silverado, and Sierra, the BCM acts as the central hub for all body-related electronics. When it fails, it can cause a cascade of frustrating and seemingly unrelated issues, making your vehicle unreliable and difficult to operate. Don’t let a faulty module keep you off the road. This direct-fit, VIN-programmed BCM is the definitive solution to restore your vehicle’s electronic functions to perfect working order.
From the Diagnostic Bay
We once had a 1999 Silverado in the shop where the owner had spent a small fortune chasing a ghost. His driver-side power window would only work occasionally. He had replaced the window motor, the master switch, and even checked the wiring harness for breaks. Nothing worked. After connecting our scan tool, we found communication fault codes pointing directly to the BCM. The internal circuits responsible for that window output had failed. We installed a VIN-programmed BCM, and everything—the window, the locks, and even a dome light issue he hadn’t mentioned—started working perfectly. It’s a classic case of treating the disease, not just the symptoms.
Common Symptoms of a Failing BCM
- ✔ Power windows or door locks work intermittently or not at all.
- ✔ Interior lights, headlights, or taillights flicker, stay on, or won’t turn on.
- ✔ The factory security system or keyless entry fails to operate correctly.
- ✔ The radio or instrument cluster displays erratic behavior or loses power.
- ✔ A “Service Vehicle Soon” light is illuminated with BCM-related diagnostic trouble codes (DTCs).
- ✔ The horn honks unexpectedly or doesn’t work when pressed.
- ✔ Wipers operate at the wrong speed or won’t turn off.
The Plug-and-Play Solution for Your 1998-2000 Blazer BCM
Replacing the BCM on these GM vehicles isn’t as simple as swapping the part. The module is coded specifically to your vehicle’s features and Vehicle Identification Number (VIN). Our service eliminates the need for an expensive trip to the dealership for programming. Simply provide us with your VIN during checkout, and we will flash the module with the latest GM software updates and your vehicle’s exact configuration. This ensures that when you receive the part, it is a true plug-and-play installation. This process guarantees compatibility with your factory options, from power seats to keyless entry, and often resolves underlying software glitches that the original module may have had.
Installation and Post-Install Procedures
This BCM is typically located behind the dashboard, either in the center (Blazer S10/Jimmy S15) or on the lower left-hand side near the driver’s kick panel (Silverado/Sierra/Vans). While the physical installation is straightforward, please be aware of a few potential post-installation steps:
- Airbag System Sync: If your airbag warning light illuminates after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag module.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control functionality.
We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Guaranteed Fitment for Multiple GM Models
This module is a direct replacement for a wide range of GM trucks and SUVs. It is compatible with part numbers 16257125, 09366801, 19153625, 8191536250, 191583625, 8093668010, and 8162571250. Please verify your part number and check the fitment list below:
- BLAZER S10/JIMMY S15 (1998-2000): Body Control (BCM); (center dash), ID 16257125
- S10/S15/SONOMA (1998-2000): Body Control (BCM); (center dash), ID 16257125
- SILVERADO/SIERRA 1500 & 2500 (1999-2000): Body Control (BCM); (LH dash)
- ASTRO/SAFARI (2000): Body Control (BCM); (LH dash)
- BRAVADA (1998): Body Control (BCM); (center dash), w/extended build date (opt ZN4)
- ISUZU HOMBRE (1999-2000): Body Control (BCM); (LH dash)
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Just provide your vehicle’s VIN at checkout, and the module will arrive ready for installation.
Where is the BCM located on my 1999 Silverado?
On Silverado, Sierra, Astro, and Safari models, the BCM is typically found behind the lower left-hand side of the dashboard, near the driver’s kick panel. On Blazer and Jimmy models, it’s usually in the center of the dash.
What happens if my airbag light comes on after I install it?
This indicates the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool to resolve this.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module without needing to send it back to us.
Will this fix my intermittent power window problem?
A faulty BCM is a very common cause of intermittent power window and lock issues on these vehicles. While we cannot guarantee a diagnosis without inspecting the vehicle, replacing a faulty BCM often resolves these types of electrical problems.