If you rely on your 2004-2007 GMC Savana 3500 for work, you know that electrical problems aren’t just an annoyance—they’re a roadblock to getting the job done. When your van’s power windows, door locks, or interior lights start acting erratically, the culprit is often a failing Body Control Module (BCM). This isn’t just a component; it’s the central nervous system for your vehicle’s body electronics. A faulty BCM can cause a cascade of frustrating issues, from a dead HVAC blower on a hot day to a security system that prevents your van from starting.
This replacement Body Control Module, part number 15198116, is the definitive solution. We pre-program it to your van’s specific Vehicle Identification Number (VIN) before shipping. This means it arrives ready for a true plug-and-play installation, eliminating the need for an expensive and time-consuming trip to the dealership for programming. Restore full, reliable functionality to your workhorse and get back on the road with confidence.
A Technician’s Notebook
I had a plumbing contractor bring his ’06 Savana 3500 into the shop last month with a list of bizarre symptoms. The dome lights wouldn’t turn off, the driver’s side power lock was dead, and the radio would randomly shut off. He was worried about a massive wiring problem. After a quick scan, I saw a handful of communication codes pointing to the BCM. These modules, especially in work vans that see constant use and door cycling, can fail internally over time. We swapped in a VIN-programmed BCM, and in less than 10 minutes, every single issue was resolved. It’s a common failure, but thankfully, it’s a simple fix.
Is Your Savana Showing These Electrical Faults?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ HVAC controls that don’t respond or a blower motor that works sporadically.
- ✔ An illuminated airbag warning light, often with a DTC like B1001 stored.
- ✔ Malfunctioning interior or exterior lights (e.g., dome lights stay on, headlights won’t work).
- ✔ Vehicle security system issues, including no-start or crank-no-start conditions.
- ✔ Unpredictable behavior from the radio or instrument cluster gauges.
Quick-Swap Guide: Get Your Van Running in Minutes
For the GMC Savana and Chevrolet Express vans, the BCM is one of the more accessible modules to replace. No complex tools are required. Here’s how to get it done:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the Module: In your 2004-2007 Savana 3500 Van, the BCM is typically located in the center of the dashboard, often accessible by removing a lower dash panel or glove box.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- Install the New BCM: Seat the new, pre-programmed module into the mounting bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Power Up: Reconnect the battery terminal. Start the vehicle and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Post-Installation Note: In some cases, a professional scan tool may be needed to perform a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on. This syncs the new BCM with the airbag system.
Confirmed Fitment for Your GM Vehicle
While this is the correct part for the 2004-2007 Savana 3500 Van Body Control Module, it also serves as a direct replacement for a wide range of GM trucks and SUVs. It is interchangeable with part numbers 10383536, 15116066, 15136225, 15198116, and more. Please verify your vehicle in the list below.
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 2500 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 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
And many other Chevrolet, GMC, Cadillac, and Hummer models from 2002-2007.
Frequently Asked Questions
Do I need to take my van to the dealer after installing this BCM?
No. This Body Control Module is delivered pre-programmed to your vehicle’s VIN. This allows for a direct installation without requiring any additional programming from a dealership, saving you time and money.
What is a core charge? Do I need to send my old part back?
There is no core charge for this part. You can keep your old BCM without any penalty or need to return it.
My airbag light is on after installation. Is the part defective?
No, this is a normal possibility. The new BCM needs to be electronically introduced to the airbag’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a compatible high-level scan tool to sync the components and turn off the light.
Is this an OEM part?
This is a high-quality replacement part built to meet or exceed original equipment manufacturer (OEM) standards for performance and reliability. It is backed by our one-year warranty.
Where is the BCM located on a 2005 Savana van?
On the 2004-2007 Savana and Express vans, the BCM is located behind the dashboard, near the center of the vehicle. Access is typically gained by removing the lower trim panels under the radio and HVAC controls.