Restore Your Van’s Electrical System with a Reliable, Programmed BCM
If your 2008-2012 GMC Savana 1500 is starting to act haunted—with flickering lights, malfunctioning power windows or locks, a security light that won’t turn off, or even a frustrating no-start condition—the Body Control Module (BCM) is the most likely culprit. As the central hub for your vehicle’s body electronics, a failing BCM can cause a cascade of confusing and intermittent problems. This isn’t just an annoyance; it’s a reliability issue for a workhorse vehicle you depend on. Stop chasing electrical gremlins and get the definitive solution.
This is a direct-fit Body Control Module, part number 15948439, that arrives at your door fully programmed to your van’s specific Vehicle Identification Number (VIN). We handle the complex part for you. By flashing the module with the latest GM software updates before it ships, we eliminate the need for an expensive trip to the dealership for programming. This saves you time, money, and the headache of dealing with post-installation calibration. It’s a straightforward fix designed for both professional installers and capable DIYers.
A Technician’s Notebook: The Case of the Unreliable Work Van
I had a 2011 Savana 1500 roll into my bay that was making the owner pull his hair out. The complaint was intermittent: some days the power door locks wouldn’t work, other days the radio would stay on after the key was removed, and twice it left him stranded with a security light on and a no-crank condition. He’d already replaced the battery and checked fuses. After hooking up my scan tool, I saw a slew of communication loss codes (U0140, U0155). This pointed directly to a BCM that was failing internally. These modules are sensitive to voltage fluctuations and moisture, and after years of service, the circuit boards can develop micro-fractures. We installed one of our pre-programmed BCMs, and the van was back to being the reliable work tool he needed. The pre-programming meant he was in and out in under an hour, without a second stop at the dealer.
Common Signs of a Failing Savana 1500 Body Control Module
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft light stays illuminated, preventing the engine from starting.
- ✔ Dashboard warning lights flicker or appear for no reason.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0100, or B1001.
- ✔ Rapid battery drain while the vehicle is parked.
A Straightforward Guide to Installation
Replacing the BCM in your Savana is a manageable job that can be done with basic hand tools. This module is typically located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: On the Savana/Express vans, the BCM is usually found behind the lower center instrument panel trim. You may need to remove a few trim pieces to gain access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to ensure everything is working correctly before reassembling your dash.
Important Post-Installation Information
While this module is programmed for a plug-and-play installation, some GM vehicles require additional steps for full system integration:
- Airbag System Sync: If the airbag (SRS) warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional bi-directional scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to prevent issues with the traction control system.
- No Core Charge: We make it simple. There is no core charge on this part, so you can keep your original module without the hassle of sending it back.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any part of the installation process.
Verified Vehicle Compatibility
This BCM is a guaranteed fit for the 2008-2012 GMC Savana 1500 Van. It also serves as a direct replacement for a wide range of other GM vehicles. Please verify your original part number against the list below to ensure compatibility. This module replaces the following part numbers:
10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
Frequently Asked Questions
What does ‘programmed to my VIN’ mean?
It means we load your vehicle’s specific software and settings onto the BCM before we ship it. This ensures it communicates correctly with your van’s other computers, just like the original, and lets you avoid a trip to the dealer for programming.
Is this a difficult part to install myself?
For someone with basic mechanical skills, it’s very manageable. The main challenge is accessing the module’s location in the dash. Since the programming is done, the physical swap is straightforward.
What information do you need from me?
After you place your order, we will need the 17-digit Vehicle Identification Number (VIN) from your 2008-2012 Savana 1500 Van. This is essential for us to program the module correctly.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. A faulty BCM is a very common cause of security system errors and no-start conditions related to the anti-theft system on these GM vehicles.
Do I need to send my old BCM back?
No. We do not require a core return. You can keep or dispose of your old module, saving you the time and expense of return shipping.