Solve Your Van’s Electrical Headaches for Good
If you’re dealing with bizarre electrical issues in your 2004-2007 Chevrolet Express or GMC Savana Van, you know how frustrating it can be. One minute the wipers work, the next they don’t. The power locks have a mind of their own, and that pesky airbag light just won’t go away. As a technician with over two decades of experience, I’ve seen these symptoms hundreds of times, and the culprit is almost always a failing Body Control Module (BCM). This isn’t just an annoyance; for a work vehicle like the Express 2500, it’s a reliability issue that can cost you time and money. This replacement 2004-2007 Express 2500 Van BCM is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play repair.
A Technician’s Notebook: The Case of the Contractor’s Van
I once had a local contractor bring in his ’06 Express 2500. He was at his wit’s end. His van wouldn’t start intermittently, the interior lights would flicker, and the A/C blower was dead—a major problem during a hot summer. He’d already replaced the battery and checked the fuses. After a quick scan, I saw a handful of communication codes pointing to a faulty BCM. We swapped in a VIN-programmed module, and in less than 10 minutes, every single issue was resolved. He was back on the job the same afternoon. This is the power of a reliable, correctly programmed module; it eliminates guesswork and gets your vehicle back in service fast.
Is Your Van Showing These Symptoms?
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows, door locks, or interior/exterior lights are malfunctioning.
- ✔ The security system is acting up, causing no-start or crank-no-start conditions.
- ✔ An airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ You’re seeing multiple communication or body-related diagnostic trouble codes.
- ✔ Wipers operate erratically or won’t turn off.
A Straightforward Guide to Installation
Installing your new 2004-2007 Express 2500 Van BCM is a quick job that most DIYers or any professional can handle in minutes. In these vans, the BCM is typically located in the center of the dash, behind an access panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents shorts and helps reset the vehicle’s electronic systems.
- Locate the Module: Find the BCM in the center dash area. You may need to remove a trim panel to access it. It’s a small black box with several multi-pin electrical connectors.
- Swap the Part: Carefully disconnect the wiring harnesses from the old BCM. They have locking tabs that need to be depressed. Remove any mounting screws or clips holding the old module, and install the new one in its place.
- Reconnect & Test: Securely plug the wiring harnesses into your new, pre-programmed BCM. Reconnect the battery terminal. Start the van and test all the functions that were previously failing—lights, locks, windows, wipers, and HVAC.
Post-Installation Note: In some cases, particularly if the airbag light was on, a ‘Setup SDM Primary Key’ procedure may be needed using a professional scan tool to sync the new BCM with the airbag system. This is a simple final step to clear any remaining codes.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15194170 and other interchangeable numbers. It is guaranteed to fit the following models, specifically those with the commercial tradesman package (RPO code PRP) where the BCM is located in the center dash:
- Chevrolet Express 1500 Van: 2004, 2005, 2006, 2007
- Chevrolet Express 2500 Van: 2004, 2005, 2006, 2007
- Chevrolet Express 3500 Van: 2004, 2005, 2006, 2007
- GMC Savana 1500 Van: 2004, 2005, 2006, 2007
- GMC Savana 2500 Van: 2004, 2005, 2006, 2007
- GMC Savana 3500 Van: 2004, 2005, 2006, 2007
This part is also a compatible replacement for a wide range of other GM trucks and SUVs from 2002-2007, including Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, and Hummer H2 models. Our VIN programming ensures it works perfectly for your specific vehicle’s options.
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 a trip to the dealership and additional programming fees.
What is a core charge?
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this BCM, so you can keep your old part without any hassle.
My airbag light is on. Will this fix it?
If the airbag light is caused by a faulty BCM (often showing code B1001), this replacement will resolve the root cause. However, after installation, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Where is the BCM located on my Express Van?
On 2004-2007 Express and Savana vans with the commercial package (PRP), the BCM is found behind an access panel in the center of the dashboard.
What if I have other issues after installation?
Our VIN programming handles all the necessary setup for your vehicle’s options. If issues persist, it may indicate another problem in the vehicle, such as a wiring short or a different faulty component. Our expert support team is here to help you diagnose further if needed.