Is your 1998-2000 Chevrolet S10, GMC Sonoma, or another compatible GM truck experiencing bizarre electrical problems? Issues like flickering lights, malfunctioning power windows and locks, or a security system that prevents your truck from starting are classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can create a cascade of frustrating and difficult-to-diagnose symptoms. This replacement Body Control Module is the definitive solution to restore your truck’s electronic systems to perfect working order.
This isn’t just a part in a box. We provide a comprehensive service that makes your repair as simple as possible. Before we ship your module, we program it with the latest GM software updates using the unique Vehicle Identification Number (VIN) you provide. This critical step ensures the BCM communicates correctly with your truck’s other electronic modules, eliminating the need for an expensive trip to the dealership for programming. It’s a direct-fit, VIN-matched solution designed for a straightforward installation.
From the Diagnostic Bay
We had a 1999 GMC Jimmy come into the shop that would randomly fail to start. The owner had already replaced the battery, starter, and even the fuel pump, but the intermittent no-start condition persisted. The security light was flashing on the dash, which was the key clue. After connecting a diagnostic scanner, we saw communication fault codes with the BCM. The original module was intermittently failing to recognize the key’s security chip, triggering the anti-theft system and disabling the fuel injectors. Instead of chasing more parts, we installed a VIN-programmed BCM. The truck started reliably every time, and the owner was relieved to finally have a dependable vehicle again. It’s a classic case where the BCM mimics other component failures, making a correct diagnosis essential.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (lights staying on or not turning on).
- ✔ A flashing security or anti-theft light on the dashboard.
- ✔ The engine cranks but refuses to start due to the security system being activated.
- ✔ Inconsistent or non-working radio, dome lights, or dashboard gauges.
- ✔ False warnings on the driver information center.
- ✔ Problems with the keyless entry system.
Your Solution: A Pre-Programmed 1998-2000 S10 BCM
Don’t let a faulty module keep your truck off the road. This replacement 1998-2000 S10 BCM is tested and prepared to be a reliable, long-term fix. By programming the unit to your VIN, we ensure it has the correct software configuration for your truck’s specific options and features. This process is essential for modern vehicle electronics and is included with your purchase. Simply provide your VIN during or after checkout, and we’ll handle the rest. Plus, with our no-core-charge policy, you can keep your original module without the hassle of sending it back.
Important Post-Installation Information
While this module is programmed for your vehicle, certain systems may require a synchronization or relearn procedure after installation. These are standard steps for this type of repair and can often be performed with a high-quality bidirectional scan tool. Please be aware of the following potential requirements:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is necessary. This syncs the new BCM with the airbag’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: In some cases, a recalibration of the brake pedal position sensor may be needed to ensure correct brake light operation and to satisfy the traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment for Multiple Models
This BCM is a direct replacement for part number 16257125 and is compatible with a wide range of GM trucks and vans. Please verify your vehicle and options below.
Compatible Part Numbers: 09366801, 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250
This part will fit these makes and models with these options:
- S10/S15/SONOMA 98-00 Body Control (BCM); (center dash), ID 16257125
- BLAZER S10/JIMMY S15 98-00 Body Control (BCM); (center dash), ID 16257125
- BRAVADA 98 Body Control (BCM); (center dash), w/extended build date (opt ZN4)
- ISUZU HOMBRE 99-00 Body Control (BCM); (LH dash)
- ASTRO 00 Body Control (BCM); (LH dash)
- SAFARI (GMC) 00 Body Control (BCM); (LH dash)
- SIERRA 1500 PICKUP 99-00 Body Control (BCM); (LH dash), ID 16257125
- SILVERADO 1500 PICKUP 99-00 Body Control (BCM); (LH dash), ID 16257125
- SIERRA 2500 PICKUP 99-00 Body Control (BCM); (LH dash), ID 16257125
- SILVERADO 2500 PICKUP 99-00 Body Control (BCM); (LH dash), ID 16257125
Frequently Asked Questions
Is this BCM plug-and-play?
Because we program the module to your vehicle’s VIN, it is designed to be as close to plug-and-play as possible. However, as noted, some vehicles may require additional relearn procedures for the airbag or brake systems, which require a professional scan tool.
Where is the BCM located on my 1999 S10?
On the 1998-2000 S10, Sonoma, Blazer, and Jimmy, the BCM is typically located behind the center of the dashboard. On full-size trucks like the Silverado and Sierra, and vans like the Astro and Safari, it is usually found on the left-hand (driver’s) side of the dash.
What happens if I forget to provide my VIN?
Providing your VIN is a required step for this purchase. We cannot program or ship the module without it. Our team will contact you after your purchase to remind you if it has not been provided.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module, which can be helpful for reference or if you ever decide to have it repaired.
Will this fix my ‘Security’ light issue?
A faulty BCM is the most common cause of a flashing security light and a no-start condition on these GM trucks. Installing a correctly programmed BCM will resolve this issue if the module is the root cause of the problem.