Solve Your Van’s Frustrating Electrical Problems for Good
If you’re dealing with a 2004-2007 Chevrolet Express 3500 Van that seems to have a mind of its own—with flickering lights, a dead HVAC system, or random security lockouts—the Body Control Module (BCM) is the most likely culprit. As the central command for your vehicle’s body electronics, a failing BCM can cause a cascade of baffling issues. This isn’t just an inconvenience; for a work van, it’s a direct hit to your productivity. We offer a professional cloning service for your BCM, providing a reliable, plug-and-play solution that gets your workhorse back on the road without expensive dealership programming.
Case Study: The Ghost in the Work Van
A contractor brought in his ’06 Express 3500, completely frustrated. His van would intermittently fail to start, the radio would cut out, and the blower motor for his heat and AC was dead—a huge problem on job sites. He’d already replaced the battery and checked the fuses. After connecting my scanner, I saw a handful of communication codes, including the notorious BCM code B1001. In my 20+ years of experience, these symptoms on a GM van almost always point to an internal BCM failure, often from voltage irregularities over years of service. Instead of a costly new module and dealer programming, we performed our cloning service. We transferred all the original data to a quality-tested replacement module. The result? The van started every time, the HVAC roared back to life, and all electrical gremlins were gone. It’s a textbook fix I’ve performed hundreds of times.
Is Your Express Van Showing These Electrical Faults?
- ✔ HVAC controls are unresponsive or the blower motor works intermittently.
- ✔ The security light is on, and the vehicle randomly won’t start (Passlock issues).
- ✔ Power windows, door locks, or interior/exterior lights operate erratically or not at all.
- ✔ The airbag warning light is illuminated, often with a diagnostic trouble code (DTC) like B1001.
- ✔ You’re experiencing strange grounding issues or a cluster of communication DTCs.
Your 5-Minute Installation Guide
Installing your cloned BCM is a straightforward job that most DIYers and professional mechanics can complete in minutes. For the Express and Savana vans, the location is very accessible.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the systems to reset.
- Locate the Module: On the 2004-2007 Express 3500 VAN, the BCM is located in the center of the dashboard, typically behind a lower access panel. It’s a black box with several large multi-pin connectors.
- Swap the BCM: Carefully unplug the electrical connectors. They have release tabs that need to be pressed. Unbolt or unclip the old module and remove it. Secure the newly cloned BCM in its place.
- Reconnect and Test: Firmly plug all connectors back into the new module. Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC system.
Important Post-Installation Note: In some cases, a couple of additional steps may be needed. If your airbag light remains on, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. A “Brake Pedal Position Relearn” might also be necessary. These are standard procedures after a BCM replacement.
Verified Fitment for Your GM Van or Truck
This cloning service is for part number 10367690 and its interchanges. It is compatible with a wide range of GM vehicles. While this page is focused on the 2004-2007 Express 3500 BCM, this service also covers the following models with the Commercial Tradesman Package (opt PRP) or similar configurations:
- Chevrolet Express 1500/2500/3500 Van (2004-2007)
- GMC Savana 1500/2500/3500 Van (2004-2007)
- Chevrolet Silverado & GMC Sierra Trucks (See full list for details)
- Chevrolet Suburban, Tahoe & GMC Yukon/Yukon XL (See full list for details)
- Cadillac Escalade & Hummer H2 (See full list for details)
Always verify your part number matches one of the interchangeable numbers (15116066, 15136225, 10367690, etc.) before ordering.
Frequently Asked Questions
What exactly is a BCM cloning service?
Cloning is a process where we transfer the complete software and vehicle-specific data (including key information and options) from your original BCM to a replacement unit. This makes the new module a perfect digital copy, ensuring it works seamlessly with your van’s other computers without any need for dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. We will perform the service and ship both your original module and the ready-to-install cloned module back to you.
Will this fix my no-start security issue?
Yes, in most cases. BCM failure is a very common cause of security system faults on these GM vans. By cloning your original data, the cloned BCM will recognize your existing keys, resolving the anti-theft issue.
What if my airbag light comes on after I install it?
This is a known possibility. It simply means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A mechanic with a bi-directional scan tool can perform the “Setup SDM Primary Key in BCM” procedure in a few minutes to clear the light.
Is there a warranty on this service?
Absolutely. We stand behind our work. The replacement BCM comes with a one-year warranty, giving you peace of mind that you’re making a lasting repair.