Restore Full Functionality to Your GM Workhorse
If you’re dealing with baffling electrical issues in your 2004-2007 Express 3500 Van, you know how frustrating it can be. One minute the A/C works, the next it doesn’t. The power locks have a mind of their own, and a persistent airbag light might be on your dash. These aren’t random glitches; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command for your van’s body electronics, and when it falters, it can disrupt everything from convenience features to critical safety systems. This replacement Express 3500 Body Control Module, part number 15064149, is the reliable, pre-programmed solution to get your vehicle back in service without an expensive trip to the dealership.
From the Diagnostic Bay: The Contractor’s Van
I remember a 2006 Express 3500 work van that came into my shop. The owner, a plumber, was at his wit’s end. His dome lights wouldn’t turn off, draining the battery overnight, and the power door locks were completely unresponsive—a major security issue when carrying expensive tools. He’d already replaced the battery and checked fuses. After hooking up my scanner, I saw a slew of communication (U-prefix) codes and a B1001 DTC. This pointed directly to an internal BCM failure. We installed a VIN-programmed module just like this one. In under 10 minutes, the lights worked correctly, the doors locked, and the DTCs were gone. He was back on the road to his next job, secure and operational.
Is Your Express Van Showing These Electrical Faults?
- ✔ Intermittent or non-working HVAC controls and blower motor.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ The security system acting up, causing a no-start or crank-no-start condition.
- ✔ An illuminated airbag warning light, often with a B1001 (Option Configuration Error) code.
- ✔ Headlights, taillights, or interior lights staying on or not turning on.
- ✔ Communication loss codes (U-codes) stored in other modules.
A Straightforward Guide to Installation
For the Express and Savana vans, this is one of the easier module replacements you can do. The entire process typically takes less than 15 minutes.
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before starting work.
- Locate the BCM: In your Express 3500 Van, the BCM is conveniently located in the center of the dashboard, usually accessible by removing a lower trim panel.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove any mounting bolts or clips holding it in place, then install the new module.
- Reconnect and Test: Re-attach the electrical connectors to the new BCM, ensuring they click securely into place. Reconnect your battery terminal.
- Final Checks: Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC. Most functions should work immediately.
Post-Installation Note: In some cases, particularly if the airbag light was on, a ‘Setup SDM Primary Key in BCM’ procedure may be required using a professional scan tool to sync the new BCM with the airbag system. Similarly, a Brake Pedal Position Relearn might be needed. These procedures are only necessary if related warning lights appear after installation.
Verified Fitment for Your GM Vehicle
While this is a direct solution for the Express 3500 Body Control Module, it is also a compatible replacement for a wide range of GM trucks and SUVs. This module is interchangeable with part numbers 15116066, 15136225, 10367690, and others. Please verify your part number or contact us with your VIN to ensure perfect compatibility.
- Chevrolet Express / GMC Savana 1500/2500/3500 Van (2004-2007) – w/commercial tradesman package (opt PRP)
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic) – Crew Cab models
- Chevrolet Avalanche, Suburban, Tahoe (2003-2006)
- GMC Yukon / Yukon XL (2003-2006)
- Cadillac Escalade / ESV / EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
Does this Body Control Module require programming?
No. We pre-program the module to your vehicle’s specific VIN before shipping. This ensures it’s ready for installation right out of the box, with no need for a dealership visit.
Where is the BCM located on my 2005 Express 3500 Van?
On the 2004-2007 Express and Savana vans, the BCM is typically found behind the trim panel in the center of the dashboard, below the radio and HVAC controls.
Will this fix my airbag light with code B1001?
Yes, a faulty BCM is a very common cause of the B1001 code. Replacing it with this programmed module should resolve the code. However, if the light stays on after installation, a simple ‘SDM Key Sync’ procedure with a pro-level scan tool may be needed to complete the repair.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old module without any hassle or extra cost.
What is the warranty on this part?
This part is backed by our one-year warranty, giving you peace of mind and confidence in your repair.