Restore Full Functionality to Your GM Workhorse
Is your 2004-2007 GMC Savana 3500 Van plagued by baffling electrical issues? As a professional technician with over two decades of experience, I know that when your work van is down, your business suffers. A faulty Body Control Module (BCM) is often the hidden culprit behind problems that can sideline your vehicle, from a non-responsive climate control system to a frustrating no-start condition. This replacement BCM, equivalent to part number 15136225, is the definitive solution to get your van back on the road and earning its keep.
The BCM acts as the central hub for your van’s body electronics. It manages the power windows, door locks, interior and exterior lighting, security system, and even the windshield wipers. When it fails, it can create a cascade of confusing symptoms. Our unique Cloning Service makes this repair straightforward. We transfer the specific software and key data from your original module to this replacement unit. The result is a true plug-and-play part that requires no expensive trip to the dealership for programming, saving you time and money.
A Technician’s Notebook: The Misleading No-Start
I once had a commercial client with a Savana van that would intermittently refuse to start. The security light was flashing. They had already replaced the ignition switch and even the key, with no luck. After connecting my scan tool, I noticed communication loss codes with the BCM. The issue wasn’t the key or the security system itself, but the BCM failing to recognize the valid key signal. A failing BCM can mimic many other problems, leading to wasted time and money on incorrect parts. Installing a cloned 2004-2007 Savana 3500 BCM resolved the issue instantly, as it had the original, correct security data already loaded.
Is Your Work Van Showing These Electrical Faults?
- ✔ Unresponsive or erratic HVAC controls, including a blower motor that won’t turn on or off.
- ✔ Power door locks or windows operating intermittently or not at all.
- ✔ The security or anti-theft light is on, causing a crank-no-start condition.
- ✔ Interior dome lights or exterior lights flickering, staying on, or not working.
- ✔ An airbag warning light on the dash, sometimes with a related DTC like B1001 (Option Configuration Error).
- ✔ Communication loss codes (U-codes) when scanned with a professional diagnostic tool.
Get Your Savana Back to Work: A 5-Minute Install Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work. This prevents electrical shorts and helps reset the vehicle’s systems.
- ✔ Locate the BCM: In the GMC Savana and Chevrolet Express vans, the BCM is typically located in the center of the dashboard, accessible from below. It’s a black box with several large multi-pin connectors.
- ✔ Swap the Module: Carefully unplug the electrical connectors from your old BCM. They have locking tabs that need to be pressed. Remove the old module and secure the new, cloned module in its place.
- ✔ Reconnect and Test: Firmly plug the connectors into your new BCM. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, wipers, and HVAC.
- ✔ Perform Relearns (If Needed): In some cases, a post-install procedure like an Airbag System Sync or Brake Pedal Position Relearn may be necessary. See our FAQ for more details.
Verified Fitment for GM Trucks, SUVs, and Vans
While this is a perfect fit for the 2004-2007 Savana 3500 BCM, this module is also a direct replacement for a wide range of GM vehicles from 2002-2007, ensuring broad compatibility. It interchanges with part numbers 10383536, 15116066, 15136877, 15198116, and others. Key compatible models include:
- ✔ Chevrolet Express / GMC Savana 1500, 2500, 3500 Vans (2004-2007, w/ commercial tradesman package)
- ✔ Chevrolet Silverado / GMC Sierra 1500, 2500, 3500 Pickups (2003-2007 Classic)
- ✔ Chevrolet Avalanche, Suburban, Tahoe / GMC Yukon, Yukon XL (2003-2006)
- ✔ Cadillac Escalade, ESV, EXT (2003-2006)
- ✔ Hummer H2 (2003-2007)
Frequently Asked Questions
What exactly is the “Cloning Service”?
Our Cloning Service is a precise process where we transfer the critical data—including your vehicle’s VIN, mileage, and security information—from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your vehicle, eliminating the need for dealer programming.
Do I have to send my original BCM back?
Yes, for the cloning process to work, you must send us your original module. However, there is NO core charge, and we promptly return your original module to you along with the newly programmed replacement.
Will I need special tools for installation?
No special tools are required for the physical installation. However, if the airbag light appears after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems.
Is this a reliable, long-term fix?
Absolutely. We use high-quality, OEM-spec modules and back our service with a one-year warranty. This is a far more dependable solution than a used part from a junkyard, which could have the same faults or require expensive programming.
What if other warning lights appear after I install it?
Occasionally, disconnecting the battery and replacing the BCM can trigger the need for a system relearn. The most common are the Airbag System Sync and the Brake Pedal Position Relearn. These can be performed by any qualified shop with a capable scan tool.