Fix Your Van’s Electrical Headaches for Good
If your 2004-2007 Chevrolet Express 2500 Van is experiencing a host of bizarre electrical problems, a failing Body Control Module (BCM) is the most likely culprit. As the central command for your van’s body electronics, a faulty BCM can cause chaos, from malfunctioning lights and power locks to a dead A/C system on a hot day. This replacement BCM, part number 15137393, is the reliable, dealership-free solution to restore full functionality and peace of mind to your workhorse van.
We offer a professional Cloning Service with this module. This means we transfer the critical data from your original BCM directly onto this replacement unit. The result is a true plug-and-play component that requires no expensive trip to the dealership for programming. It arrives ready to install, pre-configured to your van’s specific options and VIN. This process ensures all systems, including security and optional equipment, work correctly right out of the box.
From the Diagnostic Bay: The Case of the Erratic Express Van
I had a 2006 Express 2500 work van come into my shop that was driving the owner crazy. The radio would turn on and off by itself, the dome light would flicker, and the power door locks had a mind of their own. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of U-codes (communication errors) pointing to the BCM. These modules, especially in hard-working vans, often fail from heat cycles and vibration. We used our cloning service to transfer his data to a replacement unit. In under an hour, the van was back together with zero electrical gremlins. It’s a common, straightforward fix that saves fleet owners significant downtime and diagnostic fees.
Is Your Van’s BCM Failing? Watch for These Signs
A failing BCM can manifest in numerous ways. If you’re noticing any of these issues, it’s time to consider a replacement. Over my 20 years as a technician, these are the most common symptoms I’ve seen with a bad 2004-2007 Express 2500 Body Module:
- ✔ Intermittent or non-working interior and exterior lights.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ HVAC and climate control problems, such as a blower motor that won’t turn on or stays stuck on high.
- ✔ The security system acting up, causing a no-start condition or the alarm to go off randomly.
- ✔ An airbag warning light on the dash, sometimes with a B1001 diagnostic trouble code.
- ✔ Wipers that won’t turn off or activate unexpectedly.
A Straightforward Guide to BCM Installation
For the Chevy Express and GMC Savana vans, this is a very accessible job for a DIYer or any professional technician. The entire process should take less than 15 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s electronic systems.
- Locate the BCM: In the 2004-2007 Express/Savana vans, the BCM is typically located in the center of the dashboard, often behind a lower access panel. You may need to remove a trim piece to get to it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Seat the new, cloned BCM into the mounting bracket and securely reconnect all the electrical harnesses. You’ll hear a ‘click’ when they are properly seated.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15137393 and other interchangeable numbers. It is specifically designed for models with the commercial tradesman package (RPO code PRP). Please verify your part number or contact us with your VIN to ensure compatibility. This part fits:
- ✔ Chevrolet Express 1500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ Chevrolet Express 2500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ Chevrolet Express 3500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ GMC Savana 1500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ GMC Savana 2500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ GMC Savana 3500 Van: 2004, 2005, 2006, 2007 (center dash, w/ commercial tradesman package)
- ✔ Also fits a wide range of other 2002-2007 GM Trucks and SUVs. See full list for details.
Frequently Asked Questions
What is the cloning service and how does it work?
You send us your original BCM. We use specialized equipment to read the unique vehicle data (VIN, options, security keys) and transfer it to your replacement module. We then ship both your old module and the ready-to-install new one back to you. This completely eliminates the need for dealer programming.
Do I need to do any programming after installation?
No, our cloning service handles all the necessary programming. However, in some cases, a post-install procedure may be needed. For example, if the airbag light is on, a scan tool may be required to perform the ‘Setup SDM Primary Key in BCM’ function. This is a simple sync procedure.
Do you keep my old BCM? Is there a core charge?
No. There is no core charge, and we always return your original module with the cloned replacement. You are free to keep it or dispose of it as you wish.
Will this fix my van not starting?
It can. The BCM is a key part of the Passlock/Passkey vehicle security system. If it fails, it can prevent the engine from starting. A cloned 2004-2007 Express 2500 Body Module will retain your vehicle’s security information, resolving this type of no-start issue.
What is the warranty on this part?
This Body Control Module comes with a one-year warranty, guaranteeing its reliability and performance under normal operating conditions.