Fix Your Van’s Electrical Headaches for Good
Is your 2004-2007 Chevrolet Express 3500 Van suffering from baffling electrical problems? Intermittent power locks, a dead climate control panel, or a security light that won’t turn off can sideline your work vehicle, costing you time and money. The Body Control Module (BCM) is the electronic brain behind these functions, and when it fails, it can create a cascade of frustrating issues. This replacement module, part number 15137394, is the definitive solution to restore full functionality to your van.
We make this repair simple with our professional BCM Cloning Service. Instead of dealing with expensive dealership programming, you send us your original module. We expertly transfer its unique data—including VIN, mileage, and security information—to this replacement unit. The result is a true plug-and-play module that is 100% ready for installation upon arrival. Get your workhorse back on the road without the hassle.
A Technician’s Notebook: The Case of the Ghostly Work Van
I once had a 2006 Express 3500 in my bay that was driving the owner, a local plumber, crazy. The van would randomly refuse to start, the radio would cut out, and the blower motor worked only when it wanted to. He’d already replaced the battery and checked the fuses. After connecting my scan tool, I saw a handful of communication error codes (U-codes) pointing to the BCM. These modules are notorious for failing internally, causing poor ground connections on the circuit board. By providing a cloned 2004-2007 Express 3500 BCM, we had his van running reliably in a day, saving him from another costly day of lost business.
Is Your Express Van Showing These BCM Failure Signs?
- ✔ The HVAC and blower motor controls are unresponsive or work intermittently.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔ Power windows, door locks, or interior/exterior lights fail to operate correctly.
- ✔ The security system acts up, causing a no-start condition or a flashing security light.
- ✔ The vehicle’s electrical system seems to have a mind of its own with unpredictable behavior.
- ✔ Your scan tool shows multiple communication or body-related diagnostic trouble codes.
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 the Express Van, the BCM is typically found in the center of the dashboard, often accessible by removing a lower dash panel.
- ✔ Swap the Module: Carefully disconnect the wiring harnesses from your old BCM. Connect them securely to your new, cloned module. The connectors are keyed to only fit one way.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Verify the Fix: Start the vehicle and test all the functions that were previously malfunctioning—lights, locks, windows, and HVAC—to confirm the repair is complete.
- ✔ Post-Install Checks: In some cases, an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be needed if related warning lights appear. This requires a professional scan tool.
Verified Fitment for GM Trucks & Vans
This BCM is a direct replacement for part number 15137394 and other interchangeable numbers. While it is a perfect fit for the 2004-2007 EXPRESS 3500 VAN (with commercial tradesman package, opt PRP), it also fits a wide range of GM vehicles. Please verify your part number and vehicle options before ordering.
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE & ESV & EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 04-07 Body Control (BCM); (LH dash)
SIERRA & SILVERADO 1500/2500/3500 03-07 (Classic) Crew Cab Body Control (BCM); (under steering column)
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions
What exactly is a BCM cloning service?
It’s a process where we transfer the essential vehicle-specific data from your original, failing BCM directly onto the replacement module. This makes the new part a perfect digital copy, ensuring it works seamlessly with your van’s existing systems without any need for dealer intervention.
Do I need to program this module after I receive it?
No. The cloning service handles all the programming. When you receive the module back from us, it is fully programmed and ready for plug-and-play installation.
Where is the BCM located on my 2005 Express 3500 Van?
On most 2004-2007 Express and Savana vans with the commercial package, the BCM is located behind the dashboard panel in the center console area, near the radio and HVAC controls.
What should I do if my airbag light is on after installation?
If the airbag light appears, it means the new BCM needs to be synchronized with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Why is my original module returned to me?
We always return your original part. We do not require a core, so you can keep it. This ensures transparency and lets you have the original hardware for your records.
Will this fix my intermittent power window and lock problems?
Yes, in the vast majority of cases. The BCM directly controls the power window, lock, and lighting circuits. If those components are failing erratically, a faulty BCM is the most common cause.