If your 2000 Silverado 1500 is acting possessed with a mind of its own—power windows failing, door locks cycling randomly, or the security light preventing a start—you’re not alone. These are classic signs of a failing Body Control Module (BCM). As the electronic nerve center for your truck’s comfort and convenience features, when the BCM goes, it can create a cascade of frustrating and seemingly unrelated electrical problems. This isn’t just an annoyance; it can affect your vehicle’s security and daily usability.
This is a direct-fit, VIN-programmed Body Control Module, a reliable solution to restore full functionality to your vehicle. Forget the expensive trip to the dealership for programming. We handle that for you. 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 significant time and money.
From the Diagnostic Bay: The Case of the Haunted Truck
I once had a 2000 Sierra 1500 in my shop with symptoms that had the owner pulling his hair out. The radio would turn on and off, the dome light flickered, and occasionally the truck wouldn’t start, flashing the security light. The owner had already replaced the battery and checked the grounds. After hooking up my scan tool, I saw several U-codes (communication errors) pointing to a network problem. In these early 2000s GM trucks, these ghost-like issues almost always trace back to a failing BCM. We installed a VIN-programmed module just like this one, and every single issue vanished. It’s a common failure, but thankfully, a straightforward fix with the right part.
Is Your GM Truck Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic power window or door lock operation.
- ✔ Interior lights not working correctly or staying on.
- ✔ The security or anti-theft system light is on, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights appearing randomly.
- ✔ Communication issues with scan tools, often showing codes like U0140 or other U-series codes.
- ✔ Wipers behaving erratically or not parking in the correct position.
A Straightforward Guide to BCM Installation
Installing your new BCM is a manageable job for a DIY enthusiast. 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 before starting any electrical work.
- Locate the BCM: On most models like the Silverado and Sierra, you’ll find it mounted to the left of the steering column, often behind a lower dash panel.
- Remove Connectors: Carefully press the release tabs on the multiple wiring harness connectors and pull them straight out from the module. Do not force them.
- Unmount the Old Module: Remove the bolts or clips holding the old BCM in place and carefully take it out.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and secure it.
- Reconnect Everything: Plug all the wiring harnesses back into their corresponding slots on the new module until they click securely. Reconnect your battery terminal.
- Perform Final Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to ensure everything is working as it should.
Important Post-Installation Steps
Because this module is pre-programmed, most functions will work immediately. However, depending on your specific vehicle, a couple of quick relearn procedures may be necessary:
- Airbag System Sync: If your airbag warning light is on after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require this recalibration to ensure the brake lights and traction control system function correctly. This can also be performed with a capable scan tool.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility List
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 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
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Is this BCM truly plug-and-play?
Yes, it is. We program it using your VIN before shipping, so it’s ready to install without needing a trip to the dealer for programming. Some minor relearn procedures may be needed post-installation as noted above.
How 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 program and ship the module without it.
What tools are required for installation?
Basic hand tools like a socket set and a screwdriver are usually all that’s needed to access and replace the BCM. In some cases, a professional scan tool may be required for post-installation relearn procedures.
What if my airbag light comes on after I install it?
This is a known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag module. A technician with a capable scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this fix my ‘Security’ light issue?
Yes, a failing BCM is one of the most common causes of a persistent security light and a no-start condition on these GM vehicles. This programmed module will restore the proper function of the Passlock security system.