Solve Your Van’s Frustrating Electrical Problems
If you’re dealing with bizarre electrical issues in your work van—like the A/C quitting on a hot day, power locks with a mind of their own, or a security light that prevents the engine from starting—you’re likely facing a failing Body Control Module (BCM). As the electronic nerve center for your vehicle’s body functions, a faulty BCM can cause a cascade of confusing and intermittent problems. This replacement BCM, part number 15137393, is the reliable, pre-programmed solution for your 2004-2007 Express 1500 BCM, designed to restore full functionality and get your van back to work without a costly trip to the dealership.
Case Study: The Express Van That Wouldn’t Cooperate
I recently had a 2006 Express 1500 work van come into my shop that was causing major headaches for a local contractor. The driver reported that the interior lights would flicker, the radio would cut out, and worst of all, the van would occasionally refuse to start, displaying a ‘Security’ message. After checking the battery and grounds, my scan tool pointed towards communication errors with the BCM (DTC B1001). The original module had internal corrosion, a common issue in these hard-working vehicles. Installing a VIN-programmed BCM like this one solved all the issues in under 10 minutes. The contractor was back on the road the same day, avoiding costly downtime and diagnostic fees.
Common Signs of a Failing BCM
A failing BCM can manifest in numerous ways. If your Express Van is showing any of these signs, it’s time to consider a replacement. Over my 20 years in diagnostics, these are the most frequent complaints that trace back to a bad module:
- ✔ Intermittent or non-working HVAC and blower motor controls.
- ✔ Power windows, door locks, or mirrors behaving erratically or not at all.
- ✔ The security system acting up, leading to a no-start condition.
- ✔ An airbag warning light that won’t turn off, often with a DTC like B1001 (Setup SDM Primary Key).
- ✔ Headlights, taillights, or interior dome lights not functioning correctly.
- ✔ Unpredictable warning chimes or dashboard indicator lights.
A Straightforward Guide to Installation
One of the best features of this module is its simple, plug-and-play installation. Because we program it to your VIN before shipping, you can perform the replacement yourself with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the BCM: In the 2004-2007 Express Van, the BCM is typically found in the center dash area. You may need to remove a lower dash panel for access.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove any mounting screws, take out the old module, and install the new one in its place.
- Reconnect and Test: Re-attach the electrical connectors to the new BCM, ensuring they click securely into place. Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC.
Post-Installation Note: In some cases, particularly if the airbag light was on previously, a procedure called ‘Setup SDM Primary Key in BCM’ may be needed. This requires a professional scan tool to sync the new BCM with the airbag system. Additionally, a Brake Pedal Position relearn might be necessary. There is no core charge, so you can keep your old part without any hassle.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15137393 and other interchangeable numbers. It is guaranteed to fit the following models, specifically programmed for your vehicle’s options:
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
…and many other 2002-2007 GM Trucks and SUVs including Silverado, Sierra, Tahoe, Yukon, Escalade, and Hummer H2.
Frequently Asked Questions
Why is VIN programming so important?
VIN programming loads your van’s specific factory settings and options into the BCM. This ensures all features, from power windows to the security system, work correctly right out of the box. It eliminates the need for a dealership visit, saving you time and money.
Do I need any special tools for this job?
For the physical installation, you’ll only need basic hand tools like a screwdriver or a small socket set to access the dash panel. If your airbag light is on after installation, a professional-grade scan tool will be needed to perform the ‘Setup SDM Primary Key’ procedure.
Is there a core charge for my old part?
No. We do not require you to send back your old BCM. There is no core charge, making the process simpler and more convenient for you.
What happens if I install this and a problem remains?
While this module fixes the vast majority of electrical body issues, ensure you’ve ruled out other potential causes like bad grounds, faulty switches, or wiring problems. Our BCMs are fully tested and backed by a one-year warranty for your peace of mind.