Restore Full Functionality to Your GM Workhorse
If you’re dealing with baffling electrical issues in your 2004-2007 Chevrolet Express 2500 Van, the Body Control Module (BCM) is often the culprit. As the central command for your vehicle’s body electronics, a failing BCM can cause a cascade of problems, from a non-responsive A/C system on a hot day to a security light that prevents your van from starting. This replacement Body Control Module, equivalent to GM part number 15064149, arrives pre-programmed to your van’s specific VIN, eliminating the need for expensive dealership programming and getting you back on the road with minimal downtime.
Case Study: A Tricky Diagnosis
I remember a 2006 Express 2500 work van that came into my shop with the strangest set of symptoms. The driver reported the radio would cut out, the dome light would flicker, and sometimes the power locks wouldn’t work. He’d already replaced the battery and checked the main fuses. After hooking up my scanner, I saw a handful of communication error codes (U-codes) but nothing pointing to a single component. Experience has taught me that when multiple, unrelated body systems act up randomly, the BCM’s internal logic or its ground connection is the first place to look. We swapped in a VIN-programmed BCM, and every single issue vanished. It’s a perfect example of how this single module can solve a dozen headaches at once.
Is Your Express Van Showing These Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution for your 2004-2007 Express 2500 VAN BCM problems:
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Your airbag or SRS warning light is illuminated, sometimes with a B1001 diagnostic trouble code.
- ✔ Power windows, door locks, or exterior lights operate erratically or have failed completely.
- ✔ The anti-theft or security system acts up, causing a no-start condition.
- ✔ A variety of seemingly unrelated electrical gremlins that have no other logical explanation.
A Straightforward Guide to Installation
Getting your van’s electronics back in order is easier than you think. For most models, including the Express and Savana vans, the BCM is located in the center of the dashboard. The process is simple and requires basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the vehicle’s systems.
- Locate the Module: On the Express/Savana vans, you’ll typically find the BCM behind a panel in the center dash area. On trucks and SUVs, it’s often under the driver’s side dash near the steering column.
- Swap the Part: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove any retaining bolts or clips and take out the old module.
- Install the New BCM: Position the new, pre-programmed module, secure it in place, and firmly reconnect all electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. Start the vehicle to confirm that the primary functions are restored. In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed with a high-end scanner if the airbag light remains on. This is a simple sync procedure.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15064149 and other interchangeable numbers. It is guaranteed to fit the following vehicles, specifically for the 2004-2007 Express 2500 VAN BCM with the commercial tradesman package (opt PRP):
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 1500 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)
EXPRESS 3500 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 GM trucks and SUVs from 2002-2007. Please see the full fitment list from the original data for all compatible models.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors many of the non-engine related electronic accessories. This includes your lights, power windows and locks, wipers, HVAC system, and anti-theft system.
Why is VIN programming so important?
VIN programming configures the BCM with your vehicle’s specific options and security information. Our service means the module is ready to install right out of the box, saving you a trip to the dealership and hundreds in programming fees.
Do I need to return my old BCM?
No. We do not require a core return. You can keep your old part, which simplifies the repair process for you.
What if the airbag light is on after I install it?
This is uncommon, but if it happens, it means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A professional mechanic can perform the ‘Setup SDM Primary Key in BCM’ procedure with a diagnostic tool to resolve this.
How can I be sure the BCM is my problem?
While the symptoms listed are strong indicators, professional diagnosis is always best. Key signs are multiple, unrelated electrical failures. If just one system is failing (e.g., only the driver’s window), check its specific fuse, relay, or motor first.