Fix Your Van’s Electrical Problems for Good
If you’re dealing with bizarre electrical issues in your 2004-2007 GMC Savana 2500, a failing Body Control Module (BCM) is the likely culprit. As the nerve center for your van’s body electronics, a faulty BCM can cause a cascade of frustrating problems, from flickering lights to a no-start condition. This replacement module, part number 15137394, is the definitive solution to restore your vehicle’s functionality and reliability. We make the repair process simple with our professional cloning service, which transfers all the original data from your old module to this new one. This means no expensive trip to the dealership for programming—it arrives ready for a true plug-and-play installation.
From the Diagnostic Bay: The Work Van That Wouldn’t Work
I remember a local contractor bringing in his ’06 Savana 2500. The complaint was a technician’s nightmare: “Sometimes the blinkers don’t work, the radio display is dead, and yesterday it wouldn’t start for ten minutes.” He was losing money every day the van was unreliable. After checking the usual suspects—battery, grounds, and fuses—my scanner pointed to a communication breakdown with the BCM. Instead of a costly new module and dealership programming, we opted for a cloned unit. We transferred his original BCM data, preserving all his vehicle’s specific settings. The physical swap took less time than a coffee break. He drove out with a fully functional van and was back on the job site the same afternoon. That’s the power of a direct-fit, correctly prepared module.
Is Your Savana Van Showing These Electrical Gremlins?
A failing BCM doesn’t always trigger a check engine light, often leaving owners and mechanics chasing ghosts. Over my 20+ years, I’ve seen these modules cause some of the most confusing symptoms. Here’s what to look for:
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ HVAC blower motor or climate controls that work sporadically or not at all.
- ✔ The security light stays on, or the van experiences random no-start conditions.
- ✔ An illuminated airbag light, often with a DTC like B1001 (Option Configuration Error) stored.
- ✔ Erratic wiper operation or exterior lights that won’t turn on or off.
- ✔ A host of communication-related Diagnostic Trouble Codes (DTCs) in the U-series range.
Your 5-Minute Installation Guide
Getting your 2004-2007 Savana 2500 BCM replaced is a straightforward job that most DIYers or any professional can handle in minutes. For these vans, the BCM is typically located in the center of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: Find the BCM in the center dash area. You may need to remove a lower dash panel for access.
- Swap the Connectors: Carefully unplug the wiring harness connectors from your old BCM and plug them directly into your new, cloned module. The connectors are keyed and will only fit one way.
- Secure and Reassemble: Mount the new BCM in the original location and replace any panels you removed.
- 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 procedure like an Airbag System Sync or Brake Pedal Position Relearn may be needed. This is typically only necessary if specific warning lights appear after installation. Please refer to the FAQ for more details.
Verified Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part number 15137394 and other interchangeable numbers. While it is the specified part for the 2004-2007 Savana 2500 BCM with the commercial tradesman package (opt PRP), it also fits a wide range of other GM trucks and vans. Please verify your part number and vehicle options to ensure compatibility.
- GMC Savana 1500/2500/3500 Van (2004-2007): Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
- Chevrolet Express 1500/2500/3500 Van (2004-2007): Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
- Chevrolet Silverado & GMC Sierra Trucks (2003-2007 Classic): Body Control (BCM); (under steering column), various cab/transmission configurations.
- Chevrolet Avalanche, Suburban, Tahoe & GMC Yukon/XL (2003-2006): Body Control (BCM); (under steering column)
- Cadillac Escalade, ESV, EXT (2003-2006): Body Control (BCM); (under steering column)
- Hummer H2 (2003-2007): Body Control (BCM); (LH dash)
This module is interchangeable with part numbers: 15116066, 10383536, 15136225, 15136877, 15137393, 15137395, 15137396, 15198116, 15257043, and more.
Frequently Asked Questions
What exactly is the ‘Cloning Service’?
Our cloning service is a precise process where we transfer 100% of the data from your original BCM to the replacement unit. This includes your vehicle’s VIN, mileage, key fob programming, and factory-installed options. This makes the new module a perfect electronic match for your van, ensuring a true plug-and-play installation without needing a trip to the dealer.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, you must send us your original Body Control Module after placing your order. We will perform the service and ship both your original and the newly programmed replacement module back to you.
Is there a core charge for my old part?
No, there is absolutely no core charge. We always return your original module along with the programmed replacement, so you can keep it or dispose of it as you see fit.
My airbag light came on after I installed the new BCM. What should I do?
This can occasionally happen. It means the BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure, which will resolve the light. Any qualified repair shop can perform this quick sync for you.
Will I need any special tools for the installation?
For the physical installation, you’ll only need basic hand tools to access the module (like a screwdriver or socket wrench). No special electronic tools are needed for the swap itself. However, as mentioned, a high-end scan tool may be required for certain post-installation procedures if warning lights appear.