Are you chasing frustrating electrical gremlins in your GMC Safari or GM truck? Intermittent power windows, flickering lights, a security system that has a mind of its own, or a vehicle that refuses to start can all point to one culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s comfort and convenience features, a faulty BCM can make your daily drive a nightmare. I’ve seen it countless times in my 20+ years in the shop—what seems like a dozen separate problems is often just this single module breaking down.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take a reliable BCM, identified by part number 16257125, and program it specifically to your vehicle’s VIN before it ever leaves our facility. This means it arrives at your door with the latest GM software updates already loaded, ready for a straightforward installation. You get to skip the expensive dealership visit, the towing fees, and the days of waiting for programming appointments. This is the direct, professional-grade fix you need to restore your vehicle’s functionality and your peace of mind.
A Technician’s Notebook
I remember a 2000 GMC Safari that came into the bay with a classic BCM failure symptom: the owner said the battery would be dead every other morning. We checked for parasitic draws and found the interior lights were staying on dimly, even when the van was off. The owner had already replaced the battery twice. A quick scan showed communication errors with the BCM. Instead of a complex wiring repair, the fix was a new BCM. A pre-programmed unit like this one would have saved him hundreds in diagnostic time and parts, solving the problem on the first try.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft system preventing the engine from starting (Security light on).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Intermittent windshield wiper operation.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), often starting with ‘U’ (e.g., U0140).
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to ensure all systems are powered down.
- ✔ Locate the BCM: On a 2000 GMC Safari, the BCM is typically located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel. In other compatible models like the S10/Blazer, it’s found in the center dash area.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New Module: Seat your new, pre-programmed BCM into 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 (without starting) and test your electronics: windows, locks, lights, and wipers.
Important Post-Installation Information
While this BCM is programmed for a simple installation, some GM vehicles require a ‘handshake’ between modules after a new one is installed. Please be aware of the following potential procedures:
- 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: On certain models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Will This Fit My Vehicle?
This BCM is a direct replacement for part number 16257125 and other interchangeable numbers like 19153625, 8191536250, and 09366801. It is guaranteed to fit the following vehicles:
- Astro Van: 2000 (LH dash)
- Blazer S10 / Jimmy S15: 1998-2000 (center dash, ID 16257125)
- Bravada: 1998 (center dash, w/ extended build date opt ZN4)
- Isuzu Hombre: 1999-2000 (LH dash)
- S10 / S15 / Sonoma Pickup: 1998-2000 (center dash, ID 16257125)
- Safari (GMC): 2000 (LH dash)
- Sierra 1500/2500 Pickup: 1999-2000 (LH dash, ID 16257125 on some)
- Silverado 1500/2500 Pickup: 1999-2000 (LH dash, ID 16257125 on some)
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you using the VIN you provide during checkout. The module arrives ready for installation.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to load the exact, correct software for your vehicle’s specific options and features, ensuring perfect compatibility and function.
Do I have to send my old part back?
No. There is no core charge for this part. You can keep your original module.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a professional-grade bidirectional scan tool, like a Tech 2 or equivalent, that can perform specific commands. Most basic code readers cannot perform these functions.
What if my part number isn’t 16257125 but is on the list?
This BCM is a fully compatible replacement for all part numbers listed in the description, including 19153625, 8191536250, and others. As long as your vehicle is listed in the fitment chart, this module will work.