End Frustrating Electrical Problems in Your Work Van
If you rely on your 2004-2007 GMC Savana 3500 Van for your livelihood, you know that electrical gremlins are more than just an annoyance—they’re a threat to your business. When your power windows won’t roll down, the HVAC system dies on a hot day, or the security system acts up, you’re losing time and money. This Body Control Module (BCM), part number 15064149, is the central command unit for your van’s body electronics. Replacing a faulty BCM is the definitive solution to restore full functionality and reliability to your workhorse.
As a technician with over 20 years of experience, I’ve seen firsthand how a failing BCM can cause a cascade of confusing issues that seem unrelated. This module is the direct, plug-and-play fix. We pre-program it to your van’s specific VIN, so it arrives ready for installation without needing a costly trip to the dealership for software flashing. Get your van back in service and working as hard as you do.
Case Study: The Contractor’s Van
A local plumber brought in his ’06 Savana 3500. The complaints were all over the place: the radio would cut out, the power door locks worked intermittently, and sometimes the instrument cluster would go dark for a few seconds. He’d already replaced the battery and checked fuses, but the problems persisted. After connecting my scanner, I saw multiple communication loss codes with various modules. This pointed directly to a failing BCM. The internal circuits were breaking down, causing a data bottleneck. We installed a VIN-programmed 2004-2007 Savana 3500 Body Control Module, and within 15 minutes, every single issue was resolved. The van was back on the road, and the plumber was back to his jobs that same afternoon.
Is Your Savana Van Showing These Electrical Faults?
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Power windows, door locks, or mirrors have stopped working or operate erratically.
- ✔ The HVAC blower motor is dead, or the climate controls are unresponsive.
- ✔ Interior dome lights or exterior lights (headlights, taillights) flicker or fail to turn on.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001.
- ✔ You’re experiencing strange grounding issues or multiple communication error codes.
Your Quick 5-Minute Installation Guide
- ✔ Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- ✔ Locate the BCM: On the Savana Van, the Body Control Module is conveniently located in the center of the dash, making it easy to access.
- ✔ Swap the Module: Carefully unplug the wiring harness connectors from your old BCM. Remove any mounting screws or clips, take out the old module, and put the new one in its place.
Post-Installation Note: In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed if the airbag light remains on. This requires a professional scan tool. A brake pedal position sensor relearn might also be necessary. For your convenience, there is absolutely no core charge—you can keep your old part.
Verified Compatibility for Your GM Vehicle
This module is a direct replacement for part number 15064149 and other interchangeable numbers. It is guaranteed to fit the following models with the specified options:
GMC SAVANA 1500/2500 VAN (2004-2007) – Body Control (BCM); located in center dash, w/commercial tradesman package (opt PRP)
CHEVROLET EXPRESS 1500/2500/3500 VAN (2004-2007) – Body Control (BCM); located in center dash, w/commercial tradesman package (opt PRP)
CHEVROLET/GMC TRUCKS & SUVS (2003-2007) – Also fits various Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, Escalade, and Hummer H2 models. Please verify the part number or consult the full fitment list.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes. We program the module to your vehicle’s VIN before shipping. This ensures it communicates correctly with your van’s other systems right out of the box, eliminating the need for dealership programming.
Where is the BCM located on my 2005 Savana 3500?
For the 2004-2007 Savana and Express vans, the Body Control Module is typically found behind the center dash panel, making access relatively straightforward compared to trucks where it’s under the steering column.
Will this fix my van’s no-start security issue?
A faulty BCM is a very common cause of security-related no-start conditions in these GM vans. If your security light is on and the engine won’t crank, replacing the BCM is a highly effective repair.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of shipping it back.
What if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A professional mechanic with a capable scan tool can perform the ‘Setup SDM Primary Key’ procedure to resolve this.