Fix Your Van’s Electrical Headaches for Good
If you’re dealing with bizarre electrical issues in your 2004-2007 GMC Savana 1500 Van—like power windows with a mind of their own, a dead HVAC system, or a persistent airbag light—you’ve likely met the culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, a faulty BCM can cause chaos. This genuine OEM-quality GM 15116066 BCM is your direct, reliable solution. We pre-program it to your van’s specific VIN, ensuring it works perfectly right out of the box, with no expensive trip to the dealership required for coding.
A few months back, a 2006 Savana 2500 work van rolled into my bay. The owner, a local contractor, was at his wit’s end. The dome lights wouldn’t turn off, the power locks worked intermittently, and the radio would randomly shut down—costing him time and creating a major security concern on job sites. He’d already replaced the battery and checked fuses. After a quick scan, I saw a handful of communication codes pointing to the BCM. Instead of a costly, time-consuming dealer visit, we installed one of these VIN-programmed 15116066 modules. The entire swap took less than 10 minutes. The moment we reconnected the battery, every single issue was gone. He was back on the road to his next job with a reliable van, having saved hundreds of dollars and a full day of downtime.
Is Your Savana Van Showing These Electrical Gremlins?
A failing BCM often sends out clear warning signs. In my 20 years of experience, these are the most common symptoms I’ve seen tied to a bad module in these GM vans and trucks. If you’re noticing any of these, a replacement 2004-2007 Savana 1500 BCM is the likely fix.
- ✔ Non-functional or erratic power windows, door locks, or interior/exterior lights.
- ✔ HVAC blower motor or climate controls not working correctly.
- ✔ An active airbag warning light, often with Diagnostic Trouble Code (DTC) B1001.
- ✔ Vehicle security system problems, including no-start or intermittent starting conditions.
- ✔ Strange electrical behavior, like the radio turning off or wipers activating on their own.
- ✔ A cluster of communication-related DTCs stored in the vehicle’s memory.
Your 5-Minute Plug-and-Play Installation Guide
One of the best parts about this module is its simplicity. You don’t need to be a master mechanic to get your van running right again. For the Savana and Express vans, the BCM is located in the center of the dash for easy access.
- 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 BCM: On your Savana Van, find the module in the center dash area. It will have several multi-pin connectors attached.
- Swap the Module: Carefully unplug the wiring harness connectors from the old BCM. Unbolt or unclip the old module and remove it. Secure the new module in its place and firmly plug in all the connectors.
- Reconnect and Test: Reconnect the negative battery terminal. Start your van and test all the functions: lights, locks, windows, wipers, and HVAC system. Everything should now work as intended.
Verified Fitment For Your GM Vehicle
This part number 15116066 is a direct replacement for a wide range of GM vehicles and is interchangeable with part numbers 10383536, 15136225, 15136877, 15198116, and others. While this is the correct 2004-2007 Savana 1500 BCM, it also fits the following models:
GMC: Sierra (03-07 Classic), Yukon / Yukon XL (03-06), Savana Van (04-07 w/ PRP option)
Cadillac: Escalade / ESV / EXT (03-06)
Hummer: H2 (03-07)
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like your lights, power windows and locks, security system, wipers, and climate control features.
Is this module truly plug-and-play?
Yes. We program the module with your vehicle’s VIN before shipping. This ensures it communicates correctly with your van’s other systems, eliminating the need for dealer programming.
Why is my airbag light still on after installing the new BCM?
In some cases, the new BCM needs to be synchronized with the airbag’s computer (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a simple step for any qualified mechanic.
Where is the BCM located on my 2005 Savana Van?
For the 2004-2007 GMC Savana and Chevrolet Express vans, the BCM is typically found behind the center dash panel, making it accessible for a quick replacement.
Do I need to send my old part back?
No. There is no core charge for this part. You can keep your old module, saving you the time and hassle of a return shipment.