Are you tired of chasing electrical gremlins in your GM truck or SUV? Intermittent power windows, flickering interior lights, a security light that won’t turn off, or power locks with a mind of their own are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your daily drive incredibly frustrating. In my 20+ years as a technician, I’ve seen these modules cause some of the most confusing symptoms, often leading owners down a rabbit hole of expensive, incorrect repairs.
This is the definitive, hassle-free solution. We offer a genuine Body Control Module, compatible with service numbers 19208539, 9371990, and 9385236, that arrives at your door fully programmed to your vehicle’s specific VIN. We load the latest GM software updates, ensuring optimal performance and compatibility. This means you can skip the expensive dealership visit for programming and get your truck fixed right, the first time. It’s the perfect fix for both seasoned mechanics and determined DIYers.
A Technician’s Notebook
I remember a 2000 Silverado 2500 that came into the shop with a complaint that stumped two other mechanics. The radio would turn on by itself, the dome light would stay on for minutes after the door was closed, and occasionally, the security light would flash, preventing it from starting. There were no engine codes, just a few random communication (U-series) codes stored in history. Instead of throwing parts at it, we monitored the BCM data stream. We found the module was sending erratic commands without any input. Swapping in a pre-programmed 2000 Yukon XL BCM (the same part family) solved every single issue instantly. The customer was thrilled to avoid a massive diagnostic bill and get a simple, effective fix.
Is Your GM Truck Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that don’t work correctly (e.g., dome light stays on, headlights flicker).
- ✔ The security or anti-theft light is flashing, causing a no-start condition.
- ✔ The radio or climate control system behaves unpredictably.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U1000, U1016, or B-series codes pointing to body circuits.
- ✔ Wipers or horn activating on their own or not working at all.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
- ✔ Locate the BCM: On most compatible trucks and full-size SUVs, the BCM is located under the driver’s side of the dashboard, to the left of the steering column. On S-series models (S10, Blazer), it’s often behind the center dash/glove box area.
- ✔ Remove Trim Panels: You may need to remove the lower dash knee bolster or other plastic trim panels to gain clear access to the module.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test all body functions: windows, locks, lights, wipers, etc.
Important Post-Installation Steps
Because this module is pre-programmed, most functions will work immediately. However, depending on your vehicle’s specific configuration, a couple of quick sync procedures may be needed:
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be performed with a bi-directional scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure brake lights and traction control function as intended. This is also performed with a capable diagnostic tool.
Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct-fit replacement for vehicles requiring service part numbers 19208539, 9371990, or 9385236. Please match your part number for guaranteed compatibility.
- 2000 GMC Yukon XL 2500 (Body Control, LH dash, ID 9385236)
- 2000 Chevrolet Silverado & GMC Sierra 1500/2500 Pickup (Body Control, LH dash, ID 9385236 or 9371990)
- 2000 Chevrolet Tahoe & GMC Yukon (exc. Denali) (Body Control, LH dash, ID 9385236)
- 2000 Chevrolet Suburban 1500/2500 (Body Control, LH dash, ID 9385236)
- 2001 Chevrolet S10/S15/Sonoma & Blazer/Jimmy S15 (Body Control, center dash, may require ID 9385236)
- 2001 Oldsmobile Bravada (Body Control, center dash)
- 2001 Chevrolet Astro & GMC Safari (Body Control, LH dash)
Frequently Asked Questions
How does the programming process work?
It’s simple. After you complete your purchase, you provide us with your vehicle’s 17-digit VIN. Our technicians then use official GM equipment to flash this BCM with the correct software and vehicle-specific parameters before we ship it to you.
Is this a plug-and-play part?
For the vast majority of functions, yes. Because it arrives programmed to your VIN, you can install it and restore core functions like lights, locks, and windows immediately. In some cases, minor relearn procedures for the airbag or brake systems may be needed, as detailed above.
Do I need to return my old BCM?
No. This purchase comes with a no core charge policy. You can keep your original module, saving you the time and expense of a core return.
Where do I find my vehicle’s VIN?
Your VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
What tools do I need for installation?
Basic hand tools like a socket set and a trim removal tool are usually all that’s required for the physical installation. A professional bi-directional scan tool would only be needed if the airbag or brake relearn procedures are necessary for your vehicle.
Will this fix my ‘Security’ light issue?
A faulty BCM is a very common cause of a persistent or flashing ‘Security’ light on these GM models, often leading to a no-start condition. Replacing the BCM with our pre-programmed unit is a highly effective solution for this specific problem.