Are you chasing electrical gremlins in your 2000 GMC Sierra 1500? Flickering lights, intermittent power windows, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect your vehicle’s security and functionality. I’ve seen it countless times in the shop—a perfectly good truck rendered unreliable by one failing electronic module.
This is your direct, reliable solution. We offer a replacement Body Control Module, part number 9371990, that arrives at your door pre-programmed to your truck’s specific VIN. Forget about expensive dealership visits for programming and diagnostics. Simply provide us with your VIN at checkout, and our technicians will flash the module with the latest GM software updates, ensuring it’s ready for installation right out of the box. This is the most efficient way to restore full electrical function to your vehicle.
A Technician’s Notebook
I remember a 2000 Sierra 1500 that came into my bay with a bizarre set of symptoms. The owner said his power locks would cycle randomly while driving, the radio would shut off, and sometimes the security light would stay on, preventing the truck from starting. He’d already replaced the battery and checked the grounds. After hooking up the scan tool, I found a handful of U-codes (communication errors) pointing to the BCM. Instead of a clear failure code, the module was just creating network chaos. Swapping in a properly programmed BCM resolved every single issue instantly. It’s a perfect example of how this single component is the true ‘brain’ for your truck’s comfort and convenience features.
Key Symptoms of a Failing BCM
If your truck is experiencing these issues, a faulty BCM is the likely culprit. A replacement is often the most direct fix for a problematic 2000 Sierra 1500 BCM.
- ✔ Erratic power window or power lock operation
- ✔ Interior or exterior lights that don’t work correctly or stay on
- ✔ The security or anti-theft light stays illuminated, causing a no-start condition
- ✔ Horn or alarm sounding unexpectedly
- ✔ Inconsistent gauge cluster behavior
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), often in the ‘U’ series (e.g., U0140, U1000)
Your Straightforward Installation Guide
Installing your new BCM is a manageable job for a confident DIYer. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronics.
- Locate the BCM: On most 2000 GM trucks like the Sierra, the BCM is located under the driver’s side of the dashboard, to the left of the steering column.
- Remove Connectors: Carefully unplug the electrical connectors from the old module. They have locking tabs, so be gentle to avoid damage.
- Swap the Module: Unbolt the old BCM from its mounting bracket and install the new one in its place.
- Reconnect Everything: Plug the electrical connectors firmly into your new BCM and reconnect the negative battery terminal.
- Post-Install Checks: Start the vehicle and test all functions (lights, windows, locks). Note that some post-installation procedures, detailed below, may be necessary.
Important Post-Installation Information
While this module is programmed for a simple installation, some vehicle systems may need to be re-synced. This is normal. If you encounter an airbag warning light, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, a ‘Brake Pedal Position Relearn’ may be required on some models to ensure proper brake light and traction control operation. Always consult a factory service manual for model-specific instructions.
Will This Fit My Vehicle?
This Body Control Module is a direct replacement for service numbers 19208539, 9371990, and 9385236. It is guaranteed to fit the following vehicles:
- ✔ 2000 Chevrolet Silverado & GMC Sierra 1500/2500
- ✔ 2000 Chevrolet Tahoe & Suburban 1500/2500
- ✔ 2000 GMC Yukon & Yukon XL 1500/2500
- ✔ 2001 Chevrolet S10 & GMC Sonoma
- ✔ 2001 Chevrolet Blazer & GMC Jimmy S15
- ✔ 2001 Oldsmobile Bravada
- ✔ 2001 Chevrolet Astro & GMC Safari
Please verify your original part number or consult the fitment options to ensure compatibility. This module is the correct solution for restoring your truck’s electronics.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your Vehicle Identification Number (VIN) is essential. We use it to program the BCM with the correct software and vehicle-specific options, ensuring it works correctly as soon as you install it.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a very manageable job. The BCM is typically accessible under the dashboard. The main challenge is just reaching it. Since it comes pre-programmed, you avoid the most complex part of the job.
What does ‘No Core Charge’ mean?
It means you don’t have to send your old, faulty BCM back to us. This saves you the time, hassle, and expense of return shipping and waiting for a core deposit refund.
What exactly does a Body Control Module do?
The BCM is the computer that manages many of your vehicle’s non-engine related electronic systems. This includes power windows, power locks, the security system, interior and exterior lighting, wipers, and more.
What if my airbag light comes on after installation?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s computer (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a professional-grade diagnostic tool to resolve this.