Solve Your Van’s Electrical Headaches for Good
If you rely on your 2004-2007 Chevrolet Express 2500 Van for work, you know that electrical problems are more than an annoyance—they’re a roadblock to getting the job done. Flickering lights, a dead HVAC blower, or a security system that prevents the van from starting can mean lost time and money. This Body Control Module (BCM), part number 15137395, is the definitive solution to these frustrating and often misdiagnosed issues. As the central command for your van’s body electronics, a failing BCM is the root cause of many electrical gremlins. We solve the biggest hurdle for you: this module arrives at your door pre-programmed to your van’s specific VIN, eliminating the need for an expensive trip to the dealership for coding.
A Technician’s Notebook: The Contractor’s Van
I remember a call from a local electrician whose 2006 Express 2500 was a mess. His dome lights would stay on, the radio would cut out, and worst of all, his power locks were unresponsive—a huge security issue when his van is full of expensive tools. He’d already replaced the battery and checked fuses with no luck. After a quick scan, we saw a handful of communication codes pointing to the BCM. These modules, especially in hard-working vans, often fail from heat cycles and vibration causing internal solder joints to crack. We installed a VIN-programmed BCM, and in under 10 minutes, every single one of his electrical issues was gone. He was back on the road to his next job site without wasting a day at a repair shop.
Is Your Express Van Showing These Electrical Gremlins?
- ✔ The heat or AC blower motor works intermittently or not at all.
- ✔ Your power windows, door locks, or interior lights have a mind of their own.
- ✔ The security light is on, and the van occasionally refuses to start.
- ✔ You’re seeing an airbag warning light, sometimes with a diagnostic trouble code like B1001.
- ✔ The instrument cluster displays strange warnings or loses communication.
- ✔ Wipers or exterior lights are behaving erratically.
Get Your Van Back on the Road: 5-Minute Installation Guide
Replacing the Express 2500 Van BCM is a straightforward job that most owners can do themselves with basic tools. No complex wiring is required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: In the Express and Savana vans, the BCM is typically located in the center of the dashboard, often accessible by removing a lower dash panel. It’s a black plastic box with several large electrical connectors.
- Swap the Module: Carefully unplug the wiring harnesses from the old BCM. They have release tabs that need to be pressed. Once unplugged, remove any mounting screws or clips holding the old module in place and swap in your new one.
- Reconnect Everything: Secure the new BCM and plug the wiring harnesses back in. They are keyed to only fit in the correct spot. Reconnect your battery terminal.
- Final Checks: Start the van and test all functions—lights, locks, windows, HVAC, etc. In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed with a scan tool if the airbag light remains on, but this is not always required.
Verified Compatibility for Your GM Vehicle
This module is a direct replacement for part number 15137395 and other interchangeable parts. While this page is focused on the Express 2500 Van BCM, it also fits a wide range of GM trucks and SUVs. Please verify your part number or consult the list below.
- Chevrolet Express 1500/2500/3500 Van (2004-2007) – with commercial tradesman package (opt PRP)
- GMC Savana 1500/2500/3500 Van (2004-2007) – with commercial tradesman package (opt PRP)
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic)
- 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
What exactly does a Body Control Module do?
The BCM is the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC system. When it fails, you get strange electrical issues that don’t seem related.
Is this module truly plug-and-play?
Yes. We program the module to your van’s VIN before shipping it. This ensures it communicates correctly with your vehicle’s other computers right out of the box, saving you from a mandatory programming fee at a dealership.
Where is the BCM located on a 2005 Express 2500 Van?
On the 2004-2007 Express and Savana vans, the BCM is typically found behind the lower center dash panel, giving you relatively easy access for a quick replacement.
Will this fix my airbag light?
A faulty BCM can cause the airbag light to come on with codes like B1001. Replacing it often resolves the issue. However, if the light stays on after installation, a simple ‘SDM Key Relearn’ procedure may be needed with a compatible scan tool to sync the airbag system to the new BCM.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your old module without any hassle.