Restore Your Van’s Electrical System with a Plug-and-Play Solution
If you’re dealing with bizarre electrical problems in your 2004-2007 Chevrolet Express 2500, the Body Control Module (BCM) is often the culprit. As the central command for your van’s body electronics, a failing BCM can cause everything from flickering lights and malfunctioning door locks to a frustrating no-start condition. This isn’t just an annoyance; for a work vehicle, it’s downtime that costs you money. This replacement module, paired with our expert cloning service, is the most reliable and straightforward way to get your Express van back in service.
We transfer the critical data from your original module directly to this replacement unit. This means the new BCM is a perfect digital match for your vehicle’s specific configuration, eliminating the need for expensive dealership programming or complex setup procedures. It arrives ready to install, restoring full functionality to your power windows, interior lighting, HVAC system, and security features right out of the box.
A Technician’s Notebook: The Case of the Intermittent Express Van
A local contractor brought in his ’06 Express 2500 with a list of complaints that sounded like a poltergeist had taken up residence. The dome lights would stay on, draining the battery overnight. The power locks worked one minute and not the next. His scan tool was throwing a B1001 code and a handful of U-codes for lost communication. He’d already replaced the battery and checked all the fuses. From my experience, these scattered, unrelated electrical symptoms on GM vans of this era almost always point to one thing: a failing BCM. The internal circuits and relays wear out, causing erratic behavior. We performed our cloning service, and the new module solved every single issue in one go. It’s a classic fix for a classic problem.
Is Your Express 2500 Van Exhibiting These Issues?
A faulty BCM can manifest in numerous ways. If your work van is showing any of these signs, it’s time to consider a replacement. Here are some of the most common indicators I’ve seen in my shop:
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Power windows, mirrors, or door locks operate intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔ Interior or exterior lights flicker, stay on, or won’t turn on.
- ✔ The radio or instrument cluster loses power unexpectedly.
- ✔ Diagnostic trouble codes (DTCs) like B1001, B1327, or various U-codes are present.
- ✔ You’re experiencing a parasitic battery drain that you can’t trace to a specific circuit.
A Straightforward Guide to BCM Installation
Getting your van back to normal is simple. Our cloning service makes this a true plug-and-play repair that you can perform with basic tools in your own garage or workshop.
- Step 1: Locate the BCM. In the 2004-2007 Express and Savana vans, the Body Control Module is typically found in the center of the dashboard, often behind the lower trim panel or glove box area.
- Step 2: Disconnect the Power. Before you unplug anything, disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Step 3: Remove the Old Module. Carefully unplug the electrical connectors from the BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Step 4: Install the New Module. Mount your newly cloned BCM and securely reconnect all the electrical harnesses. You will hear a click as they lock into place.
- Step 5: Reconnect and Test. Reattach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
- Step 6: Post-Install Checks. In some cases, an airbag light may appear. This requires an ‘SDM Primary Key Setup’ with a capable scan tool. A brake pedal position relearn might also be necessary for certain models.
Guaranteed Fitment for Your GM Van or Truck
This Body Control Module is a direct replacement for part number 15064149 and other interchangeable parts on a wide range of General Motors vehicles. Please verify your part number and check the list below to ensure compatibility. This module fits vehicles with the specified options:
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)
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 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE & ESV & EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 04-07 Body Control (BCM); (LH dash)
SIERRA 1500/2500/3500 03-07 (Classic) Crew Cab Body Control (BCM); (under steering column)
SILVERADO 1500/2500/3500 03-07 (Classic) Crew Cab Body Control (BCM); (under steering column)
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions
What exactly is a ‘Cloning Service’?
Cloning is a process where we transfer the essential vehicle-specific data (like VIN, mileage, and security information) from your original, failing BCM to the replacement unit. This makes the new module a perfect electronic copy, ensuring it works seamlessly with your van’s other systems without any additional programming.
Do I need a professional mechanic to install this?
While professional installation is always an option, this part is designed for straightforward DIY installation. Thanks to our cloning service, no special programming tools are required. If you’re comfortable using basic hand tools and accessing panels under the dashboard, you can likely complete the job yourself.
What happens to my old BCM?
Your original module is always returned to you along with the newly programmed replacement. We do not require a core, so you can keep your old part.
My airbag light is on after installation. What should I do?
This can occasionally happen. It means the new BCM needs to be synchronized with the airbag system’s Sensing and Diagnostic Module (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed using a professional-grade diagnostic tool to resolve this.
Is this part compatible with other numbers?
Yes, this module is interchangeable with several part numbers, including 15116066, 10383536, 15136225, 15198116, and others. Our cloning service ensures it will function correctly in place of any of these compatible BCMs.