Fix Your Van’s Electrical Gremlins for Good
As a technician with over two decades of experience, I know that for a work van like the Chevy Express, downtime is lost money. When the electronics start acting up—the dome light stays on, the power locks go haywire, or the battery is dead every morning—the Body Control Module (BCM) is often the culprit. This isn’t just an annoyance; it’s a reliability issue that can bring your business to a halt. This direct-replacement 2004-2007 Express 2500 BCM, part number 10367690, is the definitive solution to restore full, predictable functionality to your vehicle’s core systems.
The BCM is the central command for your van’s body electronics. It manages everything from the security system and interior lighting to the HVAC blower and wipers. When it fails, you get a cascade of bizarre, seemingly unrelated problems. We solve this by providing a high-quality module that is pre-programmed to your van’s specific Vehicle Identification Number (VIN). This means no expensive trip to the dealership for programming. It arrives at your door ready for a simple, plug-and-play installation, getting your workhorse back on the job fast.
Case Study: The Phantom Battery Drain
A local contractor brought in his ’06 Express 2500, frustrated with a battery that died every two days. He’d already replaced the battery and alternator. After hooking up my multimeter, I found a significant parasitic draw. By pulling fuses one by one, we traced it to the BCM circuit. The faulty module wasn’t letting the retained accessory power circuit shut down completely. A new, programmed 2004-2007 Express 2500 BCM solved the problem in under 10 minutes of shop time, saving him from further lost workdays and diagnostic fees.
Is Your Express Van Showing These Telltale Signs?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ HVAC blower motor not working or stuck on one speed.
- ✔ Security system acting erratically, causing no-start conditions (PassLock issues).
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ An active airbag warning light, often with a DTC like B1001 (Option Configuration Error).
- ✔ Unexplained parasitic battery drain that kills the battery overnight.
- ✔ Wipers behaving unpredictably or not parking in the correct position.
A Straightforward Guide to BCM Installation
Replacing the BCM in your Express Van is a job most DIYers or any professional can handle quickly. For the 2004-2007 Express or Savana, it’s typically located in the center of the dash. Here’s a simple guide:
- Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the system to reset.
- Step 2: Access the Module. On Express/Savana vans, you’ll need to remove the lower-center dash trim panel to access the BCM. It’s usually held in by clips or a few screws.
- Step 3: Disconnect and Remove. The BCM has several multi-pin connectors. Carefully press the release tabs on each connector and pull them straight out. Once disconnected, unclip or unbolt the module from its mounting bracket.
- Step 4: Install the New BCM. Mount your new, pre-programmed module onto the bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Step 5: Reconnect and Test. Reattach the battery terminal. Turn the key to the ‘ON’ position and test all functions: lights, locks, windows, wipers, and the HVAC fan. Start the vehicle to ensure everything is operating correctly.
- Step 6: Post-Installation Checks. In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed with a scan tool if the airbag light is on. This syncs the new BCM with the airbag system. This is not always required but is a possibility.
Verified Vehicle Compatibility List
This module is a direct replacement for part number 10367690 and other interchangeable numbers. It is guaranteed to fit the following models, specifically the 2004-2007 Express 2500 BCM for models with the commercial tradesman package (RPO code PRP):
- ✔ Chevrolet Express 1500/2500/3500 Van (2004-2007) – Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
- ✔ GMC Savana 1500/2500/3500 Van (2004-2007) – Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
- ✔ Also fits a wide range of other 2002-2007 GM Trucks and SUVs including Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, Escalade & Hummer H2. Please verify your part number for these models.
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. This ensures it is ready for installation right out of the box, saving you time and the high cost of dealership programming.
What is a core charge? Do I need to send my old part back?
There is absolutely no core charge for this part. You can keep your old module, so you don’t have to worry about the hassle or expense of returning it.
My airbag light is on after installation. What should I do?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). A professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Will this fix a no-start issue related to the security system?
Yes, in many cases. A faulty BCM is a common cause of GM PassLock security system failures that prevent the vehicle from starting. Replacing it with a correctly programmed module often resolves these frustrating no-start conditions.
Where is the BCM located on my 2005 Express Van?
On the 2004-2007 Express and Savana vans, the BCM is located behind the trim panel in the center of the dashboard, below the radio and HVAC controls.