Are you tired of chasing electrical gremlins in your GM truck or SUV? One minute the power windows work, the next they don’t. The security light is flashing for no reason, or the interior lights have a mind of their own. These frustrating, intermittent issues often point to one culprit: a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause widespread chaos. This isn’t just an annoyance; it can affect vehicle security and safety systems.
This is a direct-fit replacement Body Control Module, arriving at your door fully programmed to your vehicle’s specific VIN. We handle the complex part—flashing the module with the latest GM software—so you can avoid a costly trip to the dealership. Simply provide your VIN after purchase, and we’ll configure the BCM, making the installation process as straightforward as possible. Restore reliable function to your vehicle’s essential features and get back to driving with confidence.
Case Study: A Tricky Diagnosis
A customer brought in a 2000 Silverado 1500 with a complaint that was driving him crazy: the radio would turn off randomly, the dome light would flicker, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked the grounds. In the shop, we hooked up the scanner and found a slew of ‘U’ codes, specifically U0140 (Lost Communication With Body Control Module). This told us the BCM wasn’t talking properly to other modules. After confirming power and ground to the BCM were solid, we knew the module itself had failed internally. A pre-programmed BCM like this one was the perfect fix, resolving all the ghost-like issues in one go.
Is Your Truck Showing These Symptoms?
- ✔ Erratic power window or power lock operation
- ✔ Interior or exterior lights not working correctly
- ✔ The security or anti-theft system light stays on or flashes
- ✔ Inconsistent or non-functional radio and instrument cluster gauges
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, like U0140, U0155, or U0164
- ✔ Problems with the HVAC (heating and air conditioning) controls
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ 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. On S10/Blazer models, it may be in the center dash area.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, remove any bolts or screws holding the module in its bracket.
- ✔ Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and secure it. Firmly reconnect all electrical connectors, ensuring they click into place.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Post-Installation Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc. Please see the important notes below regarding potential follow-up procedures.
Important Post-Installation Information
While this BCM is programmed to your VIN, your vehicle’s other modules may need to re-sync with it. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function as intended. This also requires a professional diagnostic tool.
- No Core Charge: You are not required to return your old module. This saves you time and the hassle of a core return.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 19208539, 9371990, and 9385236. It fits the following models:
- 2000 Chevrolet Tahoe (LH dash)
- 2000 Chevrolet Suburban 1500 & 2500 (LH dash)
- 2000 Chevrolet Silverado 1500 & 2500 Pickup (LH dash)
- 2000 GMC Yukon & Yukon XL 1500/2500 (LH dash)
- 2000 GMC Sierra 1500 & 2500 Pickup (LH dash)
- 2001 Chevrolet Blazer S10 (center dash)
- 2001 Chevrolet S10 Pickup (center dash)
- 2001 GMC Jimmy S15 (center dash)
- 2001 GMC Sonoma (center dash)
- 2001 Chevrolet Astro (LH dash)
- 2001 GMC Safari (LH dash)
- 2001 Oldsmobile Bravada (center dash)
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the BCM to the VIN you provide before we ship it. This handles the most critical software setup, making it ready for installation.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can find it on your driver’s side dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.
Why is my airbag light on after installation?
The new BCM needs to be electronically ‘introduced’ to your vehicle’s existing airbag module (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a professional scan tool to sync the components and turn off the light.
Is this a difficult part for a DIYer to replace?
The physical replacement is straightforward for most DIYers with basic tools. It involves removing a few dash panels and unplugging connectors. However, be aware that post-installation relearn procedures for the airbag or brake systems may require a trip to a mechanic with the proper scan tool.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.