Restore Full Functionality to Your Chevy Express Van
Are you dealing with frustrating electrical issues in your 2004-2007 Chevrolet Express 1500? A flickering dash, unresponsive power windows, or an air conditioner that has a mind of its own are classic signs of a failing Body Control Module (BCM). As the central command for your van’s body electronics, a faulty BCM can cause a cascade of problems that disrupt your workday or daily routine. This replacement BCM, part number 15064149, is the definitive solution to get your vehicle’s systems communicating correctly again.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your van’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures seamless integration with your existing systems, eliminating the need for an expensive trip to the dealership for programming. For the professional mechanic or the savvy DIYer, this means less downtime and a more efficient, reliable repair. Solve those persistent electrical gremlins and restore the dependability you expect from your workhorse van with a properly functioning 2004-2007 Express 1500 BCM.
A Technician’s Notebook: The Intermittent No-Start
I had a 2006 Express work van towed into my shop that was driving the owner crazy. The issue: an intermittent no-start. Sometimes it fired right up, other times the security light would flash and it was dead in the water. The owner had already replaced the battery and ignition switch. After hooking up my scanner, I found communication loss codes with the BCM. A quick check of the main BCM connector under the dash revealed minor corrosion, a common issue in work vans. This corrosion was causing an intermittent ground fault within the module’s logic board, disrupting the Passlock security signal. Replacing the faulty 2004-2007 Express 1500 BCM with a pre-programmed unit solved the no-start and cleared all communication codes instantly. It’s a fix I’ve done hundreds of times on these GM platforms.
Is Your Express Van Showing These Electrical Faults?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your Body Control Module is the culprit:
- ✔ Unresponsive or erratic power windows, door locks, and interior lights.
- ✔ The air conditioning or heater blower motor works only intermittently or not at all.
- ✔ Your anti-theft or security system light is illuminated, preventing the engine from starting.
- ✔ The airbag warning light is on, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Wipers, radio, or other accessories behave unpredictably.
- ✔ General communication errors or a host of U-codes stored in the system.
Your 5-Minute BCM Installation Guide
Getting your van back in order is a straightforward process that typically takes less than five minutes. No specialized tools are required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the system to reset.
- Locate the BCM: In most Express and Savana vans, the BCM is located in the center of the dash, often behind a lower access panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, remove the module from its mounting bracket.
- Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and firmly reconnect all electrical harnesses. You will hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions—windows, locks, HVAC, wipers, etc.—to confirm the repair is complete.
Important Note: In some cases, post-installation procedures like an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be necessary if related warning lights appear. This requires a professional-grade scan tool. Please refer to our FAQ section for more details.
Confirmed Vehicle Compatibility List
This Body Control Module is a direct replacement for part number 15064149 and other interchangeable numbers. It is guaranteed to fit the following vehicles, provided the specified options match.
CHEVROLET EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
CHEVROLET EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
GMC SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
GMC SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
GMC SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
CHEVROLET AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
CHEVROLET SILVERADO 1500 PICKUP 03-07 (classic style), Crew Cab
GMC SIERRA 1500 PICKUP 03-07 (classic style), Crew Cab
And many other GM trucks, vans, and SUVs from 2002-2007. Please verify your part number.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready for plug-and-play installation, saving you time and hundreds of dollars in dealership fees.
What does ‘No Core Charge’ mean?
It means you are not required to send your old, faulty BCM back to us. This simplifies the process for you—no return shipping, no waiting for a core refund. You can keep or dispose of your original part.
My airbag light is on after installation. What should I do?
This is an uncommon but known possibility. It requires a ‘Setup SDM Primary Key in BCM’ procedure with a bi-directional scan tool to sync the new BCM with the airbag system. A local automotive shop can typically perform this service.
Is this part compatible with other numbers like 15116066?
Yes, this module is a direct replacement for a range of GM part numbers, including 15116066, 15136225, 15198116, and others. As long as your vehicle is on the compatibility list, this module will function correctly.
Where is the BCM located on my 2005 Express 1500?
On the 2004-2007 Express and Savana vans, the Body Control Module is typically found in the center of the dashboard, accessible by removing a lower trim panel. This differs from the GM trucks of the same era, where it is usually under the steering column.