Restore Your Truck’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your 1998-2000 GM truck or SUV? Flickering interior lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. I’ve seen it hundreds of times in my shop: a customer comes in with a list of bizarre issues that seem unrelated, but they all point back to this single component.
This isn’t just another part; it’s a direct-fit, reliable solution. We take the guesswork and dealership expense out of the equation. Simply provide your vehicle’s VIN during checkout, and our technicians will program this BCM with the latest GM software specific to your truck. It arrives at your door ready for installation, saving you from costly programming fees and diagnostic headaches. This is the most efficient way to get your vehicle back to 100% functionality.
Case Study: The Ghost in the Silverado
A customer brought in his ’99 Silverado 1500 with a perplexing problem: the dome light would randomly turn on while driving, and the radio would shut off. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed intermittent communication loss codes (U-codes) pointing to the BCM. We swapped in a VIN-programmed module, and all the ghostly electrical issues vanished instantly. It’s a common failure point on these trucks, and a properly programmed BCM is the definitive fix.
Is Your Truck Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional interior/exterior lights
- ✔ Power windows or door locks operating intermittently or not at all
- ✔ The security or anti-theft system light stays on, preventing the engine from starting
- ✔ The radio or instrument cluster randomly powers down
- ✔ False warning messages on the driver information center
- ✔ Diagnostic trouble codes (DTCs) related to body systems (B-codes) or communication errors (U-codes)
Your Straightforward BCM Installation Guide
Installing your new BCM is a manageable job for a DIY enthusiast. While the exact location varies slightly, it’s typically found behind the dashboard. Always consult a service manual for your specific model.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On most S10/Blazer models, it’s behind the center dash. On Silverado/Sierra and Astro/Safari models, it’s usually on the lower left-hand (driver’s) side of the dash.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of all screws and clips.
- Unplug and Unbolt: Disconnect the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Then, remove the bolts or screws holding the module in its bracket.
- Install the New Module: Seat the new, pre-programmed BCM into the bracket and secure it. Reconnect all electrical connectors firmly until they click into place.
- Reassemble and Reconnect: Reinstall the trim panels and reconnect the negative battery terminal.
- Perform Post-Install Checks: Start the vehicle and test all functions: lights, locks, windows, radio, etc. Refer to the post-installation procedures below if any warning lights appear.
Important Post-Installation Information
Because this module is central to many systems, some vehicles may require a simple relearn procedure after installation. These are not signs of a defective part but a normal security handshake between modules.
- ✔ 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. This is only required if the light appears.
- ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light operation and traction control function.
- ✔ No Core Charge: You are not required to return your old module. This saves you time and the cost of return shipping.
Verified Fitment For Your GM Truck or SUV
This module is a direct replacement for part numbers 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801 and is guaranteed to fit the following vehicles:
- ✔ 1998-2000 Chevrolet S10 / GMC Sonoma (ID 16257125)
- ✔ 1998-2000 Chevrolet Blazer / GMC Jimmy S15 (ID 16257125)
- ✔ 1999-2000 Chevrolet Silverado 1500 / 2500 (ID 16257125 on some 2000 models)
- ✔ 1999-2000 GMC Sierra 1500 / 2500 (ID 16257125 on some 2000 models)
- ✔ 2000 Chevrolet Astro / GMC Safari
- ✔ 1998 Oldsmobile Bravada (w/ extended build date opt ZN4)
- ✔ 1999-2000 Isuzu Hombre
What does a Body Control Module (BCM) do?
What does a Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, door locks, interior and exterior lighting, the security system, and the instrument cluster.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings your vehicle had from the factory, including any specific options it 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 tools, this is a very manageable repair. The main challenge is accessing the module, which is typically located under the dashboard. Since we pre-program the unit, the most complex part of the job is already done for you.
What if the airbag light comes on after I install it?
This is a normal possibility. The new BCM needs to be electronically introduced to the airbag module (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a bi-directional scan tool. Many independent repair shops can perform this service if needed.
My original part number is 16257125. Will this work?
Yes, absolutely. This module, part number 19153625, is the correct and updated replacement for several older part numbers, including 16257125. We guarantee compatibility when you provide your VIN.