Restore Control Over Your Truck’s Electronics
If you’re dealing with bizarre electrical issues in your 2000 GMC Sierra 1500 or another compatible GM truck, you’re not alone. Flickering interior lights, power windows with a mind of their own, a security light that won’t turn off, or a frustrating no-start condition can often be traced back to one component: a failing Body Control Module (BCM). This isn’t just an annoyance; it’s a breakdown in your vehicle’s central nervous system. This direct-fit BCM, compatible with part numbers 9371990, 19208539, and 9385236, is the reliable solution to restore order.
The biggest hurdle in replacing a BCM has always been the expensive programming required at a dealership. We eliminate that step entirely. Simply provide your vehicle’s VIN at checkout, and our technicians will flash this module with the latest GM software specific to your truck. It arrives at your door ready for installation, saving you hundreds in dealer fees and diagnostic time. This is the straightforward, effective fix you’ve been looking for to get your truck running right again.
A Technician’s Notebook: The Case of the Haunted Sierra
I remember a 2000 Sierra 1500 rolling into my bay with a list of complaints that sounded like a poltergeist had taken up residence. The dome light would stay on, draining the battery overnight. The power locks would cycle randomly while driving. The final straw was when the truck refused to start, with the security light flashing on the dash. The owner had already replaced the battery and checked the fuses. After connecting my scan tool, I saw communication errors with multiple systems, all pointing back to the BCM. A failing BCM can cause this kind of chaos because it’s the hub for all body-related functions. We installed a VIN-programmed module, and just like that, the electrical ghosts were gone. It’s a common failure, and a fresh, correctly programmed 2000 Sierra 1500 BCM is almost always the definitive fix.
Is Your Truck Showing These Symptoms?
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 power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft light stays illuminated, preventing the engine from starting.
- ✔ Intermittent issues with the radio or instrument cluster gauges.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss, such as U-series codes (e.g., U1000, U0140).
Your Straightforward BCM Installation Guide
Installing your new BCM is a manageable job for a DIYer with basic tools. While the exact location can vary slightly, it’s typically found under the driver’s side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
- Locate the BCM: On most of these GM trucks and SUVs, the BCM is 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 the Connectors: Carefully unplug the multiple wiring harnesses connected to the old module. They have release tabs that need to be pressed. Do not force them.
- Remove the Old Module: The BCM is usually held in place by a few small bolts or clips. Remove them and take out the old unit.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and secure it. Reconnect all the wiring harnesses, making sure each one clicks securely into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Final Checks: Turn the key to the ‘On’ position and test all functions: windows, locks, lights, and radio. Start the vehicle to ensure the security system has reset.
Important Post-Installation Notes
While this 2000 Sierra 1500 BCM comes programmed, your vehicle’s other systems may need to be re-synced. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and traction control function.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a guaranteed fit for the following vehicles, provided the part number on your original module is 9371990, 19208539, or 9385236.
- 2000 Chevrolet Silverado 1500 / 2500 Pickup
- 2000 GMC Sierra 1500 / 2500 Pickup
- 2000 Chevrolet Tahoe
- 2000 GMC Yukon / Yukon XL 1500 / Yukon XL 2500
- 2000 Chevrolet Suburban 1500 / 2500
- 2001 Chevrolet S10 / GMC Sonoma
- 2001 Chevrolet Blazer / GMC Jimmy S15
- 2001 Oldsmobile Bravada
- 2001 Chevrolet Astro / GMC Safari
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to load the correct GM software and vehicle-specific options onto the BCM before shipping. This ensures it works correctly with your truck’s features.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very manageable installation. It primarily involves removing a lower dash panel and swapping the module. The main benefit is that our pre-programming service eliminates the most difficult part of the job.
What tools are required for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a high-level, bi-directional diagnostic scan tool, such as a GM Tech 2 or equivalent professional-grade scanner. Most basic code readers cannot perform these functions.
Will this fix my ‘Security’ light and no-start problem?
Yes, a flashing security light and a crank-no-start condition are classic symptoms of a failed BCM in these GM vehicles. This programmed module is designed to resolve that issue by properly communicating with your vehicle’s anti-theft system.
How do I find the part number on my current BCM?
You will need to access the module, which is typically under the driver’s side dashboard. The part number is printed on a white label on the module’s housing. It will be one of the compatible numbers like 9371990, 19208539, or 9385236.