Get Your Work Van Back on the Road, Fast
If you rely on your 2004-2007 Chevrolet Express 3500 Van for your livelihood, you know that electrical problems aren’t just an annoyance—they’re a roadblock to getting the job done. A failing Body Control Module (BCM) is the central nervous system of your van’s electronics, and when it goes bad, it can cause a cascade of baffling issues. This VIN-programmed BCM, part number 15064149, is the definitive solution to restore full functionality and reliability to your vehicle, eliminating the need for expensive dealership programming.
A Technician’s Notebook: The Commercial Van Conundrum
I had a contractor bring his ’06 Express 3500 into my shop, completely frustrated. His dome lights wouldn’t turn off, the power locks worked only when they felt like it, and the A/C blower was dead—a nightmare on a hot day. He’d already replaced the blower motor resistor with no luck. After connecting my scanner, I saw a handful of communication codes pointing to the BCM. These vans, especially the work-spec models with the Commercial Tradesman Package (RPO code PRP), put a heavy demand on their electrical systems. This pre-programmed 2004-2007 Express 3500 BCM is the exact fix I used. We swapped it in 10 minutes, and every single issue was resolved on the spot. He was back on the road to his next job site before lunch.
Is Your Express Van Showing These Electrical Faults?
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor won’t turn on.
- ✔ The security system acts erratically, causing a no-start condition (Security light on).
- ✔ Interior or exterior lights (headlights, brake lights) staying on or not working.
- ✔ An airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Communication loss codes (U-codes) stored in the system.
A Straightforward Guide to BCM Installation
You don’t need to be a master technician to replace this module. For the Express and Savana vans, the BCM is typically located in the center of the dash, behind an access panel. The entire process should take less than 15 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the system.
- Locate the Module: Find the BCM in the center dash area. It’s a black plastic box with several large multi-pin connectors.
- Swap the Part: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Unbolt or unclip the old module and secure the new one in its place.
- Reconnect and Test: Plug the connectors firmly into your new BCM. Reconnect the battery terminal and start the vehicle. Test all functions like lights, locks, windows, and the HVAC system to confirm the repair.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15064149 and other interchangeable numbers. While it is guaranteed to fit your 2004-2007 Express 3500 BCM (with Commercial Tradesman Package, opt PRP), it also fits a wide range of other GM vehicles, including:
- Chevrolet: Express/Savana 1500/2500/3500 (2004-2007 w/ PRP), Silverado, Avalanche, Suburban, Tahoe (2003-2007 Classic)
- GMC: Sierra, Yukon / Yukon XL (2003-2007 Classic)
- Cadillac: Escalade, ESV, EXT (2003-2006)
- Hummer: H2 (2003-2007)
Always verify your part number and vehicle options before ordering to ensure a perfect match.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and all related factory software onto the module before we ship it. This ensures it communicates perfectly with your van’s other computers right out of the box, saving you from a $150+ programming fee at a dealership.
Do I need to return my old BCM?
No. There is absolutely no core charge or need to send back your original part. You can keep it or dispose of it at your convenience.
Will I need a scan tool after installation?
In most cases, no special tools are needed. However, if your airbag light comes on after the swap, a professional scan tool is required to perform the ‘Setup SDM Primary Key’ procedure to sync the airbag system. This is a simple procedure for any qualified technician.
Is this a reliable, long-term fix for my work van?
Absolutely. This module is built to meet or exceed original equipment standards and is tested for full functionality. It comes with a one-year warranty to give you peace of mind that your work vehicle will stay reliable.