Restore Your Truck’s Electrical Functions and Reliability
Are you chasing down frustrating electrical gremlins in your GM truck or SUV? Intermittent power windows, flickering dash lights, a security system that has a mind of its own, or even a no-start condition can all point to one common culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of confusing issues. This isn’t just an inconvenience; it can affect your vehicle’s security and daily usability. This replacement BCM is the straightforward, reliable solution to get your truck back to 100%.
We take the guesswork and dealership hassle out of the equation. Unlike a generic module from a parts store, this unit arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This means no expensive trips to the dealer for programming. Simply provide your VIN at checkout, and we handle the rest, ensuring a seamless integration with your truck’s existing systems. This is the most efficient way to replace a faulty 2000 Sierra 2500 Body Control Module and restore proper function.
A Technician’s Notebook: The Case of the Haunted Silverado
A customer brought in a 2000 Silverado 1500 with a list of problems that sounded like a ghost was in the machine. The radio would turn on by itself, the dome light wouldn’t turn off, and the power locks worked only when they wanted to. He’d already replaced the battery and checked all the fuses. A scan showed a handful of ‘U’ series communication codes, pointing to a network issue. In my 20+ years of experience, these symptoms almost always lead back to the BCM. After confirming power and ground to the module were good, we installed a VIN-programmed BCM. The strange electrical behavior vanished instantly. It’s a classic failure on these GMT800 platforms, and a pre-programmed module is the fastest path to a solid repair.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM could be the root cause. A failing module can often set Body (B-series) or Communication (U-series) Diagnostic Trouble Codes (DTCs).
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft system preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Gauges on the instrument cluster behaving erratically or not working.
- ✔ The radio or climate control system malfunctioning.
- ✔ Communication DTCs like U0140, U0155, or U0164 stored in other modules.
A Straightforward Guide to Installation
Replacing the 2000 Sierra 2500 Body Control Module is a job most DIYers can handle with basic tools. The module is typically located under the driver’s side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most of these trucks, it’s mounted to the left of the steering column, often behind a lower dash panel. You may need to remove a plastic trim piece for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Post-Installation Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, etc. Start the vehicle to ensure it runs correctly. Note the post-installation procedures below.
Important Post-Installation Information
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal.
- 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 is illuminated.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure brake lights and traction control function correctly.
- No Core Charge: You are not required to return your old module. There is no core charge or deposit associated with this purchase.
Disclaimer: Vehicle systems vary. For procedures specific to your exact model, consulting a factory service manual or a certified technician is always recommended.
Verified Vehicle Compatibility
This module is a direct replacement for parts with service numbers 19208539, 9371990, or 9385236. Please verify your original part number or contact us with your VIN to confirm fitment.
- Chevrolet Silverado 1500/2500 Pickup (2000): Body Control (BCM); (LH dash), ID 9371990 or 9385236
- GMC Sierra 1500/2500 Pickup (2000): Body Control (BCM); (LH dash), ID 9371990 or 9385236
- Chevrolet Tahoe (2000): Body Control (BCM); (LH dash), ID 9385236
- GMC Yukon (2000): Body Control (BCM); exc. Denali; (LH dash), ID 9385236
- Chevrolet Suburban 1500/2500 (2000): Body Control (BCM); (LH dash), ID 9385236
- GMC Yukon XL 1500/2500 (2000): Body Control (BCM); (LH dash), ID 9385236
- Chevrolet S10 / GMC S15/Sonoma (2001): Body Control (BCM); (center dash)
- Chevrolet Blazer S10 / GMC Jimmy S15 (2001): Body Control (BCM); (center dash), ID 9385236
- Oldsmobile Bravada (2001): Body Control (BCM); (center dash)
- Chevrolet Astro / GMC Safari (2001): Body Control (BCM); (LH dash)
Do I need to do any programming myself?
Do I need to do any programming myself?
No. We program the module to your vehicle’s VIN before shipping it. It arrives ready for installation, saving you a trip to the dealership.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive your VIN for programming.
Will this fix my truck’s no-start problem?
A bad BCM can cause a no-start condition if it’s not communicating with the anti-theft system (Passlock) or the Powertrain Control Module. If a faulty BCM is the confirmed cause of your issue, this part will resolve it. However, many other components can also cause a no-start, so proper diagnosis is key.
Is this a new or a used part?
This is a high-quality, tested replacement module that has been professionally prepared and programmed with the latest GM software for your vehicle.
What if my airbag light comes on after installation?
This is a possibility and requires a simple synchronization procedure. A repair shop with a professional-grade bidirectional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems and turn off the light.