If you’re dealing with perplexing electrical issues in your work van, you know how frustrating and costly downtime can be. A flickering dash, power windows that won’t budge, or an HVAC system with a mind of its own often point to one culprit: a failing Body Control Module (BCM). This VIN-programmed 15116066 Body Control Module is the definitive, hassle-free solution for your 2004-2007 Chevrolet Express 2500 Van and a wide range of other GM trucks and vans. It arrives ready for a true plug-and-play installation, restoring full functionality without a mandatory trip to the dealership.
Case Study: The Ghost in the Work Van
A local contractor brought in his ’06 Express 2500. The complaint? Intermittent no-start conditions and the radio and interior lights would randomly turn on and off, even with the key out. His scanner was throwing a handful of communication codes (U-codes) and a B1001 for the airbag system. After verifying the main power and ground connections were solid, we suspected the BCM. Instead of a costly diagnostic path at the dealer, we installed one of our VIN-programmed 15116066 modules. The entire swap took less than 10 minutes. The van started every time, all electrical gremlins vanished, and he was back on the job the same afternoon. This is a classic BCM failure I’ve seen fix hundreds of GM vans and trucks.
Is Your Van Exhibiting These Telltale Symptoms?
A failing BCM can create a cascade of seemingly unrelated problems. Here are the most common signs that your module needs replacement:
- ✔ Erratic or non-functional HVAC controls, including a blower motor that won’t turn on or off.
- ✔ The security light is on, or the vehicle won’t start, mimicking a faulty key or security system.
- ✔ Power windows, door locks, or interior/exterior lights operate intermittently or not at all.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ A cluster of communication or body-related DTCs that won’t clear.
- ✔ Strange battery drain issues caused by the BCM failing to let other modules go to ‘sleep’.
Your Straightforward 5-Minute Installation Guide
Replacing the 2004-2007 Express 2500 BCM is a job most owners can handle with basic tools. Get your vehicle back to 100% in minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents shorts and helps reset the system.
- Locate the Module: In Express and Savana vans, the BCM is typically located in the center of the dashboard, accessible from below. It’s a black box with several large multi-pin connectors.
- Swap the BCM: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Unbolt or unclip the old module, set it aside, and install the new module in its place.
- Reconnect and Test: Securely plug all connectors into your new BCM. Reconnect the battery terminal. Start the vehicle and test all functions: lights, wipers, locks, windows, and HVAC to confirm the repair.
Important Post-Installation Notes
While our VIN programming handles the vast majority of functions, some GM vehicles may require a simple relearn procedure for specific systems. If your airbag light remains illuminated, a technician with a capable scan tool will need to perform the “Setup SDM Primary Key in BCM” procedure. In some cases, a Brake Pedal Position relearn may also be needed. These are standard procedures and do not indicate a fault with the module. And the best part? There is no core charge, so you don’t have to worry about the cost or hassle of sending your old part back.
Verified Fitment For Your GM Truck or Van
This module is a direct replacement for part number 15116066 and is interchangeable with several other part numbers, including 15136225, 15198116, 15257043, and more. It fits a wide range of vehicles:
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)
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 2500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 3500 PICKUP 03-06 Body Control (BCM); (under steering column), crew cab
SIERRA 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 2500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
TAHOE 03-06 Body Control (BCM); (under steering column)
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
Frequently Asked Questions
What exactly does this BCM control on my Express Van?
The Body Control Module acts as the central computer for your van’s comfort and convenience features. It manages the power windows, door locks, interior and exterior lighting, wipers, security system, and the HVAC climate controls.
Is this module really plug-and-play?
Yes. We program the module to your vehicle’s specific VIN before shipping. This ensures it communicates correctly with your van’s other systems right out of the box, eliminating the need for expensive dealership programming.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your old module or dispose of it without any extra fees or hassle.
What happens if my airbag light is still on after installation?
This is a common and expected situation on some GM vehicles. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key’ function in a few minutes to resolve this.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy to ensure perfect programming.
Will this fix my specific electrical problem?
This module is the solution for a vast majority of the symptoms listed. However, we always recommend confirming that your issue isn’t caused by a simple blown fuse or a bad wiring connection before ordering. This 2004-2007 Express 2500 BCM is a reliable fix for a faulty module.