Restore Your Truck’s Electrical System with a Reliable BCM
Are you chasing down frustrating electrical gremlins in your GM truck or SUV? Flickering interior lights, malfunctioning power windows, a security light that won’t turn off, or a mysterious battery drain can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a wide range of bizarre and unpredictable issues. This isn’t just an annoyance; it can affect your vehicle’s security and reliability. This replacement Body Control Module is your direct-fit, dependable solution, arriving pre-programmed with the latest GM software specifically for your vehicle’s VIN.
A Technician’s Notebook: The Phantom Battery Drain
I once had a 2000 Sierra 1500 in my bay with a battery that would die every two days. The owner had replaced the battery and alternator, but the problem persisted. A parasitic draw test showed a significant amperage pull even when the truck was off. After pulling fuses one by one, we isolated the circuit to the BCM. The internal relays for the interior lighting were sticking, keeping a circuit live and slowly draining the battery. Installing a VIN-programmed 2000 Silverado 2500 BCM like this one not only fixed the battery drain but also resolved an intermittent power lock issue the owner hadn’t even mentioned. It’s a perfect example of how one failing module can cause multiple, seemingly unrelated problems.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Erratic or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security or anti-theft system light stays illuminated, preventing the engine from starting.
- ✔ Gauges on the instrument cluster behaving erratically or not functioning.
- ✔ Horn sounding randomly or not working when pressed.
- ✔ Intermittent no-start conditions where all other systems seem fine.
- ✔ Diagnostic trouble codes related to communication errors (U-codes) or BCM internal faults.
Your Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On most of these GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, to the left of the steering column.
- ✔ 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, ensuring they click into place.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—lights, locks, windows, horn, and gauges—to ensure proper operation. Note the post-installation procedures below.
Important Post-Installation Steps
While this 2000 Silverado 2500 BCM is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new module. This is a normal part of the process.
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be required to ensure your brake lights and traction control system function correctly.
Disclaimer: Always refer to a factory service manual for procedures specific to your vehicle. If you are unsure, consult with a qualified automotive technician.
Guaranteed Vehicle Compatibility
This module is a direct replacement for service numbers 19208539, 9371990, and 9385236 and fits the following models:
- ✔ 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 Blazer S10 / S10 Pickup
- ✔ 2001 GMC Jimmy S15 / Sonoma Pickup
- ✔ 2001 Oldsmobile Bravada
- ✔ 2001 Chevrolet Astro / GMC Safari
Frequently Asked Questions
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions, such as power windows, locks, lights, security system, wipers, and horn. It acts as a central command center for these features.
Why do I need to provide my VIN?
We use your Vehicle Identification Number (VIN) to program the module with the exact software and settings for your truck’s specific options. This ensures compatibility and proper function, saving you a trip to the dealer for programming.
Is this module truly plug-and-play?
For most functions, yes. Because it’s pre-programmed, it will restore primary functions immediately. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal sensor, which sometimes requires a professional scan tool.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.
Will this fix a parasitic battery drain?
If the drain has been properly diagnosed and traced to a faulty BCM, then yes. A common BCM failure is an internal relay that sticks ‘on’, causing a continuous power draw. This part is designed to correct that internal fault.
What if my part number isn’t an exact match, but is listed as compatible?
GM often uses several part numbers for the same component over its production life. This module is a verified replacement for service numbers 19208539, 9371990, and 9385236, ensuring it will function correctly in place of any of those original parts.