Fix Your Van’s Electrical Faults with a Pre-Configured BCM
If your 2004-2007 GMC Savana 1500 is plagued by bizarre electrical issues, a failing Body Control Module (BCM) is the most likely culprit. As the central command for your van’s body electronics, its failure can disrupt everything from your power windows and door locks to the HVAC system and even prevent the engine from starting. This replacement BCM, part number 15137395, is the definitive solution. We utilize a professional Cloning Service, transferring all the critical data from your original module to this replacement. This ensures it arrives ready for a true plug-and-play installation, perfectly matched to your van’s specific features without requiring a costly trip to the dealership.
A Technician’s Notebook: The Parasitic Draw Case
I had a 2006 Savana work van in my bay that was killing batteries every two days. The owner was frustrated, losing money every time his crew couldn’t start the van. After testing the battery and alternator, I ran a parasitic draw test and found a significant drain. By pulling fuses one by one, I isolated the draw to the BCM circuit. The internal relays were sticking, keeping certain systems powered on even with the key off. Swapping in a cloned BCM like this one not only fixed the battery drain but also resolved some other intermittent issues the owner hadn’t even mentioned, like the dome light sometimes staying on. This is a classic failure mode I’ve seen on hundreds of these GM vans.
Is Your GM Van Showing These Electrical Gremlins?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s time to consider a replacement. In my shop, these are the tell-tale signs that point directly to a failing BCM on a Savana or Express van.
- ✔ Intermittent or completely non-functional power door locks, windows, or mirrors.
- ✔ HVAC blower motor or climate controls not working correctly.
- ✔ The security light is flashing, causing a no-start or crank-no-start condition.
- ✔ An active airbag light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Headlights, taillights, or interior lights behaving erratically or not turning on at all.
- ✔ Unpredictable windshield wiper operation.
Your 5-Minute BCM Swap Guide
Getting your 2004-2007 Savana 1500 BCM replaced is a straightforward job that most DIYers or any professional can handle in minutes. Our cloning service eliminates the need for complex programming tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On Savana and Express vans, the BCM is typically found in the center of the dashboard, often behind a lower access panel.
- Swap the BCM: Carefully unplug the electrical connectors from your old module. They have locking tabs, so be gentle. Remove the old BCM and install the new one in its place.
- Reconnect and Test: Securely plug the connectors into the new module. Reconnect the battery terminal and start the vehicle to test all functions—lights, locks, windows, wipers, and HVAC.
Important Post-Installation Note: In some cases, you may need a professional scan tool to perform an “Airbag System Sync” (Setup SDM Primary Key in BCM) if the airbag light remains on, or a “Brake Pedal Position Relearn.” This is vehicle-dependent but is a simple procedure for any equipped shop.
Verified Vehicle Compatibility List
This Body Control Module is a direct replacement for part number 15137395 and is interchangeable with a wide range of other GM part numbers, including 15116066, 15137393, 15198116, and more. It is confirmed to fit the following models, specifically those with the commercial tradesman package (RPO code PRP) where applicable:
- GMC Savana 1500 Van (2004-2007)
- GMC Savana 2500 Van (2004-2007)
- GMC Savana 3500 Van (2004-2007)
- Chevrolet Express 1500 Van (2004-2007)
- Chevrolet Express 2500 Van (2004-2007)
- Chevrolet Express 3500 Van (2004-2007)
- Chevrolet Avalanche (2002-2006)
- Chevrolet Silverado & GMC Sierra (2003-2007 Classic)
- Chevrolet Suburban/Tahoe & GMC Yukon/XL (2003-2006)
- Cadillac Escalade / ESV / EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
What exactly is a ‘Cloning Service’?
Cloning is a precise data transfer process. We extract the complete software profile—including your van’s specific options, key data, and security information—from your original BCM and flash it onto the replacement unit. This makes the new module an identical twin to your old one, ensuring 100% compatibility without any additional programming.
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 module and the newly programmed replacement back to you.
Is there a core charge for this part?
No, there is absolutely no core charge. We always return your original module along with the programmed replacement, so you can keep it as a spare or for your records.
What happens if the airbag light is on after I install the new BCM?
If the airbag light appears, it means the BCM and the airbag system (SDM) need to be electronically re-synced. A procedure called ‘Setup SDM Primary Key in BCM’ must be performed using a professional-grade diagnostic scan tool to resolve this.