End the Electrical Gremlins in Your GM Truck
If you’re dealing with bizarre electrical issues in your 2000 Silverado 1500—like power windows with a mind of their own, interior lights that won’t turn off, or a security system that randomly immobilizes your truck—you’re not alone. I’ve seen these exact problems hundreds of times in my shop, and the culprit is almost always a failing Body Control Module (BCM). The BCM is the central nervous system for your truck’s comfort and convenience features. When it starts to fail, it can cause a cascade of frustrating, intermittent problems. This isn’t just an annoyance; it can affect your vehicle’s security and safety.
This is your direct, reliable solution. We offer a replacement Body Control Module, part number 9371990, that comes fully programmed to your truck’s specific VIN. We flash it with the latest GM software updates before it even leaves our facility. This means no expensive trips to the dealership for programming. It’s designed to be a straightforward fix that restores full functionality and peace of mind.
A Technician’s Notebook: The Case of the Haunted Silverado
I once had a 2000 Silverado 1500 come into my bay with a list of complaints that sounded like something out of a ghost story. The dome light would flicker at random, the radio would shut off, and the power door locks would cycle while driving. The owner had already replaced the battery and checked all the fuses. Using my scan tool, I saw a slew of communication error codes (U-codes) pointing to a network issue. Experience told me to look at the BCM. We swapped in a VIN-programmed module, and just like that, every single issue was resolved. The customer saved hundreds by avoiding a dealership diagnosis and programming fee, and drove away in a truck that was finally reliable again. This is the power of a properly prepared module.
Common Signs of a Failing BCM
A faulty BCM can manifest in many ways. If your vehicle is experiencing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Erratic power windows, door locks, or mirrors.
- ✔ Instrument panel gauges behaving strangely or not working at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes.
- ✔ Wipers activating on their own or not functioning correctly.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a confident DIYer. The module is typically located under the driver’s side of the dashboard. Follow these general steps for a successful installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
- Locate the BCM: On most of these GM trucks and SUVs, the BCM is found under the driver’s side dash, often to the left of the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM 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.
- Perform Final Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm they are working correctly. See the notes below regarding potential post-installation procedures.
Important Post-Installation Notes
In some cases, additional steps may be required after installation. This is normal and depends on your vehicle’s specific configuration.
- Airbag System Sync: If your airbag warning light is on after installation, a simple sync procedure called ‘Setup SDM Primary Key in BCM’ will be needed. This requires a professional-grade scan tool to complete and ensures the new BCM and the airbag system are communicating correctly.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure brake lights and traction control function as intended. This is also performed with a capable scan tool.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 19208539, 9371990, and 9385236. It is guaranteed to fit the following vehicles:
- 2000 Chevrolet Silverado 1500 / 2500 Pickup
- 2000 GMC Sierra 1500 / 2500 Pickup
- 2000 Chevrolet Tahoe & Suburban 1500 / 2500
- 2000 GMC Yukon & Yukon XL 1500 / 2500 (exc. Denali)
- 2001 Chevrolet S10 / Blazer S10
- 2001 GMC Sonoma / Jimmy S15
- 2001 Oldsmobile Bravada
- 2001 Chevrolet Astro / GMC Safari
Simple Ordering Process: After your purchase, simply provide us with your vehicle’s 17-digit VIN. We’ll handle the programming with the latest GM software, so your module arrives ready for installation. Best of all, there is no core charge, so you can keep your old part.
Frequently Asked Questions
Why do you need my VIN number?
Your vehicle’s VIN (Vehicle Identification Number) is essential for us to program the Body Control Module correctly. The VIN allows us to load the exact software and settings for your truck’s specific options, such as power windows, keyless entry, and security system. This ensures a seamless, plug-and-play installation.
Do I need to take this BCM to a dealer to be programmed?
No. The main benefit of our service is that we program the module for you before we ship it. This saves you the time, hassle, and significant expense of a dealership visit for programming.
Where is the BCM located on my 2000 Silverado?
On the 2000 Silverado and other similar GM trucks/SUVs, the BCM is typically located under the dashboard on the driver’s side, to the left of the steering column. You will likely need to remove the lower dash trim panel to access it.
What happens if my airbag light comes on after I install it?
If the airbag light illuminates, it simply means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A mechanic with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to sync the systems and turn off the light.
Is this a used part?
This is a high-quality, tested, and verified component that has been programmed with the latest software from GM. It is guaranteed to restore your vehicle’s functionality and is backed by our expertise.