If you’re dealing with baffling electrical issues in your GM truck—like dome lights with a mind of their own, erratic power locks, or a security light that keeps you from starting your engine—you’ve likely pinpointed the culprit: a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these exact problems countless times. The BCM is the nerve center for your vehicle’s comfort and security features, and when it fails, it can cause a cascade of frustrating symptoms. This isn’t just an inconvenience; it can affect your vehicle’s security and daily usability.
We offer a straightforward and reliable solution. This replacement Body Control Module, compatible with part number 19153625, is the definitive fix for your 1998-2000 GM truck or SUV. The best part? We handle the programming for you. Simply provide your vehicle’s VIN during checkout, and our experts will flash the module with the latest GM software specific to your truck’s configuration. It arrives at your door ready to install, saving you a costly and time-consuming trip to the dealership. This is the most efficient way to restore your vehicle’s electronic functions precisely as the factory intended.
A Technician’s Notebook
I remember a 1999 GMC Jimmy that came into the shop with a classic BCM failure story. The owner was at his wit’s end. His interior lights would flicker randomly, the radio would turn off, and occasionally the security system would prevent the truck from starting. He had tried a used BCM from a salvage yard, but the problems only got worse because the module wasn’t configured for his vehicle’s options. We installed one of our VIN-programmed modules, and it was a night-and-day difference. All the electrical gremlins vanished instantly. This is why VIN-specific programming isn’t just a convenience—it’s essential for a correct and lasting repair.
Is Your Truck Showing These Symptoms?
- âś” Erratic or non-functional power windows, door locks, or mirrors.
- âś” Interior dome lights or exterior lights staying on or not working at all.
- âś” The security or anti-theft light is illuminated, causing a no-start condition.
- âś” Inconsistent or incorrect gauge readings on the instrument cluster.
- âś” Horn activating unexpectedly or not working when pressed.
- âś” Diagnostic trouble codes (DTCs) related to lost communication with the BCM (e.g., U-series codes).
Plug-and-Play Installation: Get Back on the Road Fast
Replacing the BCM is a manageable job for a DIYer with basic tools. While locations vary slightly, the process is generally the same. Here’s a typical guide for a 1998-2000 S10 BCM replacement:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
- Locate the BCM: On S10, S15, Blazer, and Jimmy models, the BCM is typically found in the center dash area, often accessible by removing the glove box or a lower dash panel. For full-size trucks like the Silverado and Sierra, it’s usually on the driver’s side, behind the lower dash panel 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 depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in place of the old one. Securely plug in all the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, etc.—to confirm the repair was successful.
Important Post-Installation Notes
In some cases, additional steps may be required:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Certain models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician for procedures specific to your vehicle.
Will This Fit My Truck?
This BCM is a direct-fit replacement for a wide range of GM vehicles and part numbers. Please verify your part number or vehicle in the list below. This module replaces part numbers: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801.
BLAZER S10/JIMMY S15 1998-2000: Body Control (BCM); (center dash), ID 16257125
BRAVADA 1998: Body Control (BCM); (center dash), w/extended build date (opt ZN4)
ISUZU HOMBRE 1999-2000: Body Control (BCM); (LH dash)
ASTRO / SAFARI (GMC) 2000: Body Control (BCM); (LH dash)
SILVERADO 1500 PICKUP 1999: Body Control (BCM); (LH dash)
SIERRA 1500 PICKUP 1999: Body Control (BCM); (LH dash)
SILVERADO/SIERRA 1500/2500 PICKUP 2000: Body Control (BCM); (LH dash), ID 16257125
SILVERADO/SIERRA 2500 PICKUP 1999: Body Control (BCM); (LH dash)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options (like keyless entry, security system, etc.) that your truck was built with. This ensures seamless integration and proper function without a trip to the dealer.
Is this part difficult to install myself?
For most DIYers with basic hand tools, this is a very manageable repair. The main task is accessing the module, which is typically behind a dash panel. Since we pre-program the unit, the electronic side of the job is already done for you.
What do I do if my airbag light turns on after installation?
An airbag light is uncommon but can happen. It means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, requires a professional bi-directional scan tool and can be performed by most repair shops.
Do I need to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module, which simplifies the process and saves you return shipping costs.
Will this fix my ‘Service 4WD’ light?
No, the Body Control Module does not manage the 4×4 system. ‘Service 4WD’ issues are typically caused by the Transfer Case Control Module (TCCM), the encoder motor, or the dash switch. The BCM handles body electronics like lights, locks, and windows.