If your 2001 Chevy Blazer, S10, or GMC Jimmy S15 is suddenly plagued by bizarre electrical problems, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable truck into a source of constant frustration. This isn’t just a part; it’s the solution to restoring order to your vehicle’s essential electronic functions.
The BCM is the central command for your vehicle’s body electronics. When it starts to fail, you’ll see symptoms that seem completely unrelated. This isn’t random—it’s the BCM losing its ability to communicate properly. We solve this problem by providing a high-quality replacement BCM, pre-programmed with the latest GM software specifically for your vehicle. Just provide your Vehicle Identification Number (VIN) during checkout, and we handle the complex programming. This means no expensive trips to the dealership for flashing. You get a part that’s ready for installation right out of the box.
A Technician’s Notebook: The Case of the Spooky S10
A customer brought in his 2001 S10 with a list of complaints that sounded like a haunting: the dome light would stay on, the radio would shut off randomly, and the security light was flashing, causing an intermittent no-start. He’d already replaced the battery and checked the grounds. After connecting my scan tool, I saw a slew of communication error codes (U-codes) pointing back to one component: the BCM. The internal circuits were failing, sending corrupt data across the network. Installing a pre-programmed 2001 Blazer S10 BCM like this one resolved every single issue in under an hour. It’s a classic failure on these platforms.
Is Your Truck Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the culprit:
- âś” Intermittent or non-functional power windows and locks.
- âś” Wipers or headlights turning on or off by themselves.
- âś” The security or anti-theft light is on, preventing the engine from starting (a common GM Passlock issue).
- âś” Erratic behavior from the interior lights or instrument cluster gauges.
- âś” Inconsistent A/C compressor clutch engagement.
- âś” Communication error codes stored, such as U1000, U1016, or B-series codes.
- âś” Power door locks that cycle while driving.
Your Step-by-Step Installation Guide
Installing your new 2001 Blazer S10 BCM is a straightforward job for a confident DIYer. On these models, the BCM is typically located in the center dash area, often accessible by removing the passenger-side lower dash panel or glove box.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the Module: Find the original BCM in the center dash area. It’s a plastic box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully release the locking tabs on each electrical connector and pull them straight out. Then, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect Power: Reconnect the negative battery terminal.
- Perform Final Checks: Turn the key to the ‘On’ position and test all body functions (lights, locks, windows, etc.). Refer to the post-installation procedures below if you encounter any warning lights.
Important Post-Installation Steps
Because this BCM is pre-programmed, most functions will work immediately. However, depending on your vehicle’s specific configuration, a couple of additional steps, known as relearn procedures, might be necessary. These sync the new BCM with other modules in your truck.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” function. This is a security procedure that syncs the BCM with the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and to prevent issues with the traction control system. This also typically requires a bi-directional scan tool.
Disclaimer: Always consult a factory service manual for procedures specific to your vehicle. While this is a direct-fit part, vehicle electronics can be complex.
Verified Vehicle Compatibility
This module is a direct replacement for part number 9385236 and is also compatible with service numbers 19208539 and 9371990. It is guaranteed to fit the following vehicles:
- 2001 Chevrolet Blazer S10 (center dash)
- 2001 GMC Jimmy S15 (center dash)
- 2001 Chevrolet S10 / GMC Sonoma (center dash)
- 2001 Oldsmobile Bravada (center dash)
- 2001 Chevrolet Astro (LH dash)
- 2001 GMC Safari (LH dash)
- 2000 Chevrolet Tahoe / GMC Yukon (LH dash, ID 9385236)
- 2000 Chevrolet Suburban 1500/2500 (LH dash, ID 9385236)
- 2000 GMC Yukon XL 1500/2500 (LH dash, ID 9385236)
- 2000 Chevrolet Silverado 1500/2500 (LH dash, ID 9385236 or 9371990)
- 2000 GMC Sierra 1500/2500 (LH dash, ID 9385236 or 9371990)