Restore Full Electrical Function to Your GM Truck or SUV
Is your 2001 Chevrolet Blazer S10, GMC Jimmy S15, or another compatible GM vehicle acting possessed? Flickering lights, malfunctioning power windows, a security system that won’t let you start the engine, or a battery that drains overnight are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated electrical problems. Don’t let a faulty module keep your reliable truck off the road. This direct-fit, VIN-programmed Body Control Module is the definitive solution to restore your vehicle’s performance and your peace of mind.
This isn’t just a generic part off the shelf. We take the guesswork and hassle out of the repair process. Upon purchase, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians then program the module with the latest official GM software specific to your exact vehicle build. This ensures that the BCM communicates flawlessly with your engine computer, transmission controller, and other onboard systems right out of the box. This critical programming step eliminates the need for an expensive trip to the dealership for coding, saving you significant time and money.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-working power windows, door locks, and interior lighting.
- ✔ The security or anti-theft light stays on, causing a no-start condition (Passlock issues).
- ✔ Intermittent operation of the radio, windshield wipers, or climate controls.
- ✔ False warning lights illuminating on the instrument cluster.
- ✔ Diagnostic scan tools are unable to communicate with the BCM.
- ✔ Unexplained parasitic battery drain that kills the battery when parked.
- ✔ Horn honking unexpectedly or not working at all.
We had a 2001 GMC Sonoma come in that was driving the owner crazy. The truck would refuse to start intermittently, with the security light flashing. He had already replaced the battery and the ignition switch based on advice from forums. After plugging in our scanner, we found no communication with the BCM. We checked the powers and grounds to the module, which were solid. A quick swap with one of our programmed BCMs, and the truck fired up on the first try and every try after. It’s a textbook example of how a failing 2001 Blazer BCM can mimic other problems, leading to wasted time and money on unnecessary parts.
Installation and Post-Install Procedures
Replacing the 2001 Blazer BCM is a straightforward process for a DIYer with basic tools. On the Blazer, Jimmy, and S10/Sonoma models, the module is typically located behind the right side of the dashboard or in the center console area. The process generally involves disconnecting the battery, removing a few trim panels for access, unplugging the electrical connectors, and unbolting the old module. Installation is the reverse of removal.
Because this module is the central hub for many systems, your vehicle may require one or two simple relearn procedures after installation to ensure all systems are synchronized. These are not always necessary but are important to be aware of:
- Airbag System Sync: If your airbag warning light is on after installation, it means the new BCM needs to be electronically ‘introduced’ to the airbag’s Sensing and Diagnostic Module (SDM). A professional scan tool is used to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and clear the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed. This ensures the brake lights function correctly and that systems like ABS and traction control receive the proper signal from the pedal.
Guaranteed Fitment for Your Vehicle
This Body Control Module is a direct replacement for service numbers 9385236, 19208539, and 9371990. It is compatible with a wide range of General Motors trucks and vans, including:
- 2001 Blazer S10 / Jimmy S15 / Bravada
- 2001 S10 / S15 / Sonoma Pickup
- 2001 Astro / Safari Van
- 2000 Silverado & Sierra 1500/2500 Pickups
- 2000 Tahoe / Yukon / Yukon XL
- 2000 Suburban 1500/2500
By providing your VIN, you guarantee that you will receive a module programmed specifically for your vehicle’s options and systems. Plus, with our no-core-charge policy, you can keep your original module without the hassle of shipping it back.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes, for the vast majority of vehicles. Because we pre-program it to your specific VIN, it will function correctly upon installation. In some cases, as noted above, a simple ‘relearn’ or ‘sync’ procedure may be required for the airbag or brake systems, which may necessitate a professional scan tool.
Where do I find my VIN to provide for programming?
Your 17-digit VIN can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What happens if I install this without it being programmed?
An unprogrammed BCM will not work correctly. It can cause numerous issues, from the vehicle not starting due to security mismatches to various features not functioning. Our mandatory VIN programming service prevents these issues entirely.
Do I need to return my old BCM?
No. This part is sold with no core charge, so you are not required to return your original module.
Will this fix my Passlock security system issue?
A faulty BCM is one of the most common causes of Passlock security system problems in these GM vehicles. If your truck won’t start and the security light is flashing, replacing the BCM is a very likely fix, as the security data is stored and managed within this module.