Restore Your Truck’s Electrical System with a Reliable, Programmed BCM
As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a dependable truck into a source of constant frustration. If your 2000 GMC Sierra 1500 is plagued by flickering lights, malfunctioning power windows or locks, or a security light that won’t turn off, the BCM is the most likely culprit. It’s the central computer for all your truck’s comfort and convenience features, and when it fails, it creates a cascade of confusing electrical problems. This isn’t just an annoyance; it can affect safety systems and even prevent your truck from starting.
We take the guesswork and high dealership costs out of the repair. This BCM is a direct-fit replacement, but with a crucial benefit: we program it specifically to your truck’s Vehicle Identification Number (VIN) before it ships. This means it arrives ready for installation, loaded with the latest GM software updates for optimal performance. You get a solution that restores factory function without the need for an expensive trip to the dealer for programming.
A Technician’s Notebook
I once had a 2000 Silverado in the shop with a classic BCM failure case. The owner was chasing his tail for weeks. The dome light would stay on, the radio would cut out randomly, and the power locks had a mind of their own. He had already replaced the battery and checked all the fuses. A quick scan showed communication loss codes with multiple modules. We installed one of our pre-programmed BCMs, and within an hour, every single issue was resolved. It’s a satisfying fix because it solves so many problems at once.
Common Signs of a Failing GM BCM
If you’re noticing any of these issues, a faulty Body Control Module is a strong possibility. A failing BCM can sometimes set communication codes like U0140.
- ✔ Erratic or non-functional interior/exterior lights
- ✔ Power windows, locks, or mirrors working intermittently or not at all
- ✔ The security or anti-theft system light stays on, preventing the engine from starting
- ✔ Inconsistent gauge cluster operation
- ✔ The radio or climate controls malfunction
- ✔ A battery that drains overnight with no obvious cause
Your Straightforward BCM Installation Guide
Replacing the BCM in these GM trucks is a manageable job for a DIYer with basic tools. On most models, it’s located under the driver’s side of the dashboard.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On your 2000 Sierra 1500, the BCM is typically found on the left-hand side of the dash, sometimes behind a lower trim panel.
- 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, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, radio, etc.
Post-Installation Considerations for Your 2000 Sierra 1500 BCM
Because this module is pre-programmed, most vehicles will not require additional steps. However, depending on your vehicle’s specific configuration, a couple of relearn procedures may be necessary. This is normal and ensures all systems communicate correctly.
- ✔ Airbag System Sync: If the airbag light is illuminated 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: In some cases, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function properly.
- ✔ No Core Charge: You are not required to send your old BCM back to us.
Verified Fitment for Your GM Truck or SUV
This module is a guaranteed fit for the following vehicles, matching part numbers 09385236, 19208539, or 9371990. Please provide your VIN upon purchase for correct programming.
- 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 / GMC Sonoma S15
- 2001 Chevrolet Blazer S10 / GMC Jimmy S15
- 2001 Oldsmobile Bravada
- 2001 Chevrolet Astro / GMC Safari
Why do you need my VIN?
Your vehicle’s VIN is essential for us to program the Body Control Module with the correct software and vehicle-specific options. This ensures it communicates properly with your truck’s other computers, making the installation process as simple as possible.
Is this a plug-and-play part?
For the vast majority of vehicles, yes. Because we pre-program it to your VIN, you can typically install it and have all functions restored. In some rare cases, an additional relearn procedure for the airbag or brake systems may be needed, as detailed above.
Do I have to return my old BCM?
No. There is no core charge for this part. You can keep your original module.
Where is the BCM located on my truck?
On most 2000-2001 GM full-size trucks and SUVs like the Sierra, Silverado, and Tahoe, the BCM is located under the driver’s side dashboard, to the left of the steering column. On S-series trucks and vans, it’s often behind the center dash area.
Will this fix my ‘Service 4WD’ light?
While a failing BCM can cause a variety of electrical issues, a ‘Service 4WD’ light is more commonly related to the transfer case control module (TCCM), the encoder motor, or the dash switch. It’s best to have the codes scanned to pinpoint the exact cause.