If you’re dealing with baffling electrical issues in your GMC Savana or Chevrolet Express van, you know how frustrating it can be. One minute the A/C works, the next it doesn’t. The power locks have a mind of their own, or worse, a persistent airbag light stays on, creating a safety concern. These aren’t random glitches; they are classic signs of a failing Body Control Module (BCM). This module is the central command for your van’s body electronics, and when it fails, it can make your reliable workhorse feel unpredictable. Get back to work with this direct-fit, VIN-programmed BCM, the straightforward solution to restore your vehicle’s functionality and peace of mind.
From the Diagnostic Bay: The Contractor’s Van
A contractor brought his ’06 Savana 2500 into my shop, completely fed up. His complaint list was long: intermittent wipers, a radio that would cut out, and a security light that sometimes prevented the van from starting, costing him time and money on the job. He’d already replaced the battery and checked grounds. After connecting my scanner, I saw a handful of communication codes pointing to the BCM. Instead of sending him to a dealership for a costly replacement and programming, we installed one of our VIN-programmed modules. The entire swap took less than 10 minutes, and every single electrical issue was resolved on the spot. He was back on the road to his next job the same afternoon.
Is Your Savana Van Showing These Electrical Faults?
A failing BCM can manifest in numerous ways. As the nerve center for your vehicle’s accessories, its failure can cause a chain reaction of problems. Here are the most common symptoms I’ve seen in the shop:
- ✔ Non-functional or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC system problems, such as a blower motor that won’t turn on or controls that don’t respond.
- ✔ An active airbag warning light, often accompanied by diagnostic trouble code (DTC) B1001.
- ✔ Security system malfunctions, including the anti-theft system preventing the engine from starting.
- ✔ Unpredictable instrument cluster behavior or warning lights that illuminate for no reason.
- ✔ Communication errors with other modules on the vehicle’s data network.
A Straightforward Guide to BCM Installation
Replacing the 2004-2007 Savana 2500 BCM is a job most DIYers or any professional can handle in minutes. Our VIN programming makes it a simple plug-and-play process.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: In most Savana and Express vans, the BCM is located in the center of the dashboard, accessible from below. It’s a black plastic box with several large multi-pin connectors.
- Remove the Old BCM: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. 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.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Important Post-Installation Note: In some cases, an airbag light may remain on. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure to sync the modules. Additionally, a brake pedal position relearn might be needed. There is no core charge for this part, so you can keep your old module without any hassle.
Verified Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part number 15194170 and is interchangeable with several other GM part numbers, ensuring broad compatibility. It is guaranteed to fit the following models, specifically for the 2004-2007 Savana 2500 BCM application among others:
- GMC Savana 1500/2500/3500 Van (2004-2007) – w/commercial tradesman package (opt PRP)
- Chevrolet Express 1500/2500/3500 Van (2004-2007) – w/commercial tradesman package (opt PRP)
- Chevrolet Avalanche, Silverado, Suburban, Tahoe (2003-2007)
- GMC Sierra, Yukon, Yukon XL, Sierra Denali (2003-2007)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Note: Compatibility may vary based on specific options and build dates. Please verify your part number or contact us with your VIN to confirm fitment.
Frequently Asked Questions
What does “VIN Programmed” mean for me?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and all related software onto the module before shipping. This makes installation plug-and-play, eliminating the need for expensive programming at a dealership.
Is this a difficult part to replace myself?
Not at all. For most owners with basic tools, the replacement takes less than 15 minutes. The BCM is typically located under the center dash and is held in by simple clips or bolts.
Do I need to return my old BCM?
No. We do not require you to send back your original part. There is no core charge, which simplifies the process for you.
My airbag light is on after installing the new BCM. Is it defective?
No, this is a normal security procedure on some GM vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). This is done with a professional scan tool using the ‘Setup SDM Primary Key in BCM’ function.
Will this fix my van’s no-start problem?
If the no-start is caused by the factory anti-theft system (Passlock/Passkey) being triggered by a faulty BCM, then yes, this new module will resolve that issue.