Is Your Express Van Plagued by Electrical Gremlins?
If you’re experiencing bizarre and frustrating electrical issues in your 2004-2007 Chevrolet Express 3500 Van, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and door locks to the HVAC system and interior lights. When it starts to fail, it can cause a cascade of problems that are difficult to diagnose and can sideline your work vehicle.
This genuine OEM-quality module, interchangeable with part number 15194170, is the definitive solution. We pre-program it to your van’s specific Vehicle Identification Number (VIN) before shipping. This critical step ensures 100% plug-and-play compatibility right out of the box. You can avoid the costly trip to the dealership for programming and get your van back in service quickly and efficiently.
From the Diagnostic Bay
We had a 2006 Express 3500 work van come into the shop that was driving the owner crazy. The radio would turn on and off by itself, the dome light would flicker, and sometimes the power door locks wouldn’t respond. He had already replaced the battery and checked all the fuses. After connecting our scanner, we saw multiple communication error codes pointing to the BCM. Instead of a lengthy diagnostic process, we installed a VIN-programmed module. The installation took less than 10 minutes, and instantly, all the strange electrical issues were gone. It’s a common failure point on these workhorses, and a pre-programmed module is the fastest path to a reliable fix.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ HVAC blower motor not working or behaving erratically.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Security system malfunctions, leading to a no-start condition.
- ✔ Interior or exterior lights not working correctly.
- ✔ Unpredictable behavior from the radio or instrument cluster.
- ✔ Communication error codes with other vehicle modules.
The Right Fix for Your 2004-2007 Express 3500 BCM
Don’t let a faulty module disrupt your work. This replacement BCM is built to strict OEM standards, ensuring long-lasting reliability. The VIN programming process loads the latest GM software updates, which can resolve issues that were present even in the original factory software. Installation is straightforward for a DIYer or any professional technician. The module is typically located in the center dash area. Simply disconnect the battery, swap the modules, reconnect the battery, and you’re back in business. In some cases, a post-install procedure like an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be needed if specific warning lights appear, which can be performed with a professional scan tool.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
Why is VIN programming so important for this part?
VIN programming loads your vehicle’s specific software and options into the BCM. Without it, the module will not communicate correctly with your van, and many features will not work. Our service saves you a mandatory and expensive trip to the dealership.
Is this BCM difficult to install?
No, the physical installation is very simple. It’s typically located in the center dash and can be swapped in under 10 minutes with basic tools. Because it arrives pre-programmed, no complex computer work is needed on your end.
Will this fix my airbag light?
A faulty BCM is a common cause of an airbag light with codes like B1001. Replacing it often resolves the issue. However, if the light remains on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure with a pro-level scan tool may be required to sync the systems.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without any hassle or need to return it.