Fix Your Van’s Electrical Headaches for Good
If you’re dealing with bizarre electrical issues in your 2004-2007 GMC Savana 3500, you’re not alone. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable workhorse into a source of constant frustration. This isn’t just an inconvenience; it’s a matter of safety and reliability for your business or family. This replacement BCM, part number 15137394, is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play repair.
The BCM is the central command for your van’s body electronics. It manages everything from the headlights and power locks to the HVAC blower and security system. When it starts to fail, you get a cascade of seemingly unrelated problems. Our module restores these critical functions to factory-spec operation, eliminating the guesswork and saving you from a costly and time-consuming trip to the dealership.
A Technician’s Notebook: The Contractor’s Van
I remember a 2006 Savana 3500 work van that came into my bay with a list of complaints from a frustrated contractor. The dome lights would flicker, the power locks worked intermittently, and sometimes the van wouldn’t start at all—the security light would just flash. He’d already replaced the battery and checked the grounds. After connecting my scanner, I saw a handful of communication codes and a specific BCM internal fault (DTC B1001). This is a classic BCM failure signature. We installed one of our VIN-programmed modules, and in less than 10 minutes, every single issue was resolved. He was back on the road to his next job, saving a full day of lost work and hundreds in diagnostic fees.
Is Your Savana Van Showing These Electrical Faults?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ HVAC blower motor not working or stuck on one speed.
- ✔ The security system acting up, causing a no-start condition.
- ✔ Headlights or taillights staying on or not turning on at all.
- ✔ An airbag warning light on the dash, often with a DTC B1001 code.
- ✔ Multiple communication error codes stored in the system.
A Straightforward Guide to Installation
One of the biggest benefits of our BCM is the simple installation. For the Savana and Express vans, the process is quick and requires no special tools. You can 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.
- Locate the BCM: In the 2004-2007 Savana 3500 Van, the BCM is located in the center of the dashboard, typically accessible by removing a lower dash panel.
- Swap the Module: Carefully unplug the electrical connectors from your old BCM. They have locking tabs, so be gentle. Plug the connectors firmly into your new, pre-programmed module.
- Reconnect and Test: Reconnect the negative battery terminal. Start the van and test all the functions that were previously malfunctioning—lights, locks, windows, wipers, and the HVAC fan.
Important Post-Installation Note: In some cases, the 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. This is a simple function for most modern scan tools.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part number 15137394 and other interchangeable numbers. It is guaranteed to fit the following models, specifically those with the commercial tradesman package (RPO code PRP):
- 2004-2007 GMC Savana 1500 / 2500 / 3500 Van
- 2004-2007 Chevrolet Express 1500 / 2500 / 3500 Van
It is also compatible with a wide range of other 2002-2007 GM trucks and SUVs, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, and Hummer H2. Please verify your part number or contact us with your VIN to ensure perfect fitment.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load your van’s specific Vehicle Identification Number (VIN) and all related factory software onto the module before we ship it. This makes it a true plug-and-play part, eliminating the need for expensive dealership programming. Your van will recognize it as the original part.
Will this fix my airbag light that’s on with code B1001?
Yes, a faulty BCM is a very common cause of the B1001 code and an illuminated airbag light. Replacing the module will fix the root cause. However, you may need a body shop or mechanic with a capable scan tool to perform the ‘SDM Key Relearn’ procedure to clear the light after installation.
Is this difficult to install myself?
Not at all. For a DIYer with basic tools, this is one of the easier electronic repairs. The module is typically located in the center dash area on Savana vans, and the entire swap usually takes less than 15 minutes.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your old module, saving you the time and hassle of return shipping.
What if I still have problems after installing the new BCM?
While this module fixes the vast majority of common electrical issues, we provide expert support. If a problem persists, it may indicate another issue (like a wiring short or a faulty switch) that the BCM was correctly identifying. We’re here to help you diagnose the next step.