Restore Full Functionality to Your 2004-2007 Express 2500 Van
If you’re dealing with baffling electrical issues in your Chevy Express or GMC Savana work van, a failing Body Control Module (BCM) is often the culprit. As the central command for your vehicle’s body electronics, a faulty BCM can cause a cascade of problems that disrupt your workday and compromise safety. This OEM-quality replacement, part number 15137394, is the definitive solution. We pre-program it to your van’s specific VIN, ensuring it works perfectly right out of the box, with no expensive dealership programming required. Get your power windows, door locks, lighting, and HVAC system working reliably again.
Case Study: A Tricky Diagnosis
I had a fleet manager bring in a 2006 Express 2500 that was driving his technicians crazy. The complaint was intermittent: one day the dome lights wouldn’t turn off, draining the battery, and the next, the power locks would stop working entirely. They had already replaced the battery and checked all the fuses. After connecting my scanner, I saw a handful of communication loss DTCs with the BCM. Instead of spending hours tracing wires for a potential short, we started with the most likely cause. We swapped in a VIN-programmed 2004-2007 Express 2500 BCM. The new module immediately solved all the ghost issues, saving the client hundreds in diagnostic labor and getting their work van back on the road the same afternoon.
Is Your Express Van Showing These BCM Failure Signs?
A failing BCM can manifest in numerous ways. Over my 20+ years in diagnostics, these are the most common symptoms I’ve seen on this specific GM van and truck platform. If your vehicle is experiencing any of these, a faulty BCM is the likely cause:
- ✔ Unresponsive or erratic HVAC controls, including a blower motor that won’t turn on or off.
- ✔ The dreaded airbag warning light is illuminated on the dash, often with a DTC like B1001 (Option Configuration Error).
- ✔ Widespread electrical gremlins: power windows that don’t move, door locks that fail to engage, or interior/exterior lights acting erratically.
- ✔ Security system malfunctions, including Passlock issues that can lead to a no-start condition.
- ✔ Poor ground signals or communication errors between various electronic modules.
A Straightforward Guide to Installation
One of the best features of this module is its simple, DIY-friendly installation. For the Express and Savana vans, the process is quick and requires basic hand tools. Here’s how to get it done:
- 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 systems.
- Locate the BCM: In the 2004-2007 Express and Savana vans, the BCM is typically found in the center of the dashboard, often behind a lower access panel. You may need to remove a trim piece to get to it.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Unbolt or unclip the old module and set it aside. Mount the new module in its place and securely reconnect all electrical plugs.
- Reconnect & Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and the HVAC system—to confirm the repair was successful.
- Post-Installation Checks: In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed if the airbag light remains on. This requires a professional scan tool. No core return is necessary, so you can keep your old part.
Will This Fit My Vehicle?
This Body Control Module is a direct-fit replacement for a wide range of General Motors trucks and vans. It is fully compatible with part number 15137394 and other interchangeable numbers. Please verify your vehicle and options below. For the 2004-2007 Express 2500 BCM, this part is specifically for models equipped with the commercial tradesman package (RPO code PRP).
AVALANCHE 1500/2500 (2003-2006)
EXPRESS 1500/2500/3500 VAN (2004-2007) – Requires commercial tradesman package (PRP)
SILVERADO 1500/2500/3500 (2003-2007 Classic)
SUBURBAN 1500/2500 (2003-2006)
TAHOE (2003-2006)
GMC:
SAVANA 1500/2500/3500 VAN (2004-2007) – Requires commercial tradesman package (PRP)
SIERRA 1500/2500/3500 & DENALI (2003-2007 Classic)
YUKON & YUKON XL 1500/2500 (2003-2006)
Cadillac:
ESCALADE, ESV, EXT (2003-2006)
Hummer:
H2 (2003-2007)
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and the high cost of dealership programming.
Where is the BCM located on my 2005 Express 2500?
On the 2004-2007 Express and Savana vans, the Body Control Module is located in the center dash area, usually behind the lower instrument panel trim.
What if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the BCM needs to be synchronized with the airbag’s Sensing and Diagnostic Module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, must be performed using a professional-grade scan tool.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us.
Will this fix my van’s intermittent no-start problem?
If the no-start is related to the Passlock security system, which is controlled by the BCM, then yes, this part is very likely to solve the problem. A faulty BCM is a common cause of security-related starting issues on these vans.