Restore Your Van’s Electrical Functions with a Reliable BCM
Is your 2008-2012 GMC Savana 2500 Van experiencing a host of frustrating electrical problems? From power windows that won’t budge to interior lights that have a mind of their own, a failing Body Control Module (BCM) can make your reliable workhorse feel unpredictable. The BCM is the central command center for your vehicle’s body electronics, managing everything from the security system to the power door locks. When it starts to fail, it can cause a cascade of issues that are often difficult to diagnose.
This isn’t just an inconvenience; it can impact your workday and your vehicle’s security. We offer a dependable and straightforward solution: a replacement Body Control Module, part number 15948439, that arrives at your door pre-programmed for your specific vehicle. By providing your VIN during checkout, we perform a cloning service, loading the latest GM software and your vehicle’s unique configuration onto the module. This eliminates the need for expensive dealership programming, saving you significant time and money.
A Technician’s Notebook
I remember a call from a local contractor whose 2011 Savana 2500 was becoming a real headache. The dome lights would stay on, draining the battery overnight, and the power locks worked intermittently. He’d already replaced the battery and checked fuses, but the problems persisted. After a quick scan, I saw several communication error codes (U-codes) pointing to the BCM. Instead of tying up his work van for days waiting for a dealership appointment, we ordered one of our pre-programmed modules. The next day, it was a simple 30-minute swap. The electrical gremlins were gone, and his van was back on the job site without missing a beat. This is the value of a part that works right out of the box.
Common Signs of a Failing BCM
If your vehicle is showing these symptoms, a faulty BCM is the likely culprit. In my shop, I’ve seen these issues hundreds of times, often accompanied by communication codes like U0140, U0155, or B-series codes related to body electronics.
- ✔ Power windows or door locks operating erratically or not at all.
- ✔ The security system light stays on, or the vehicle won’t start.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The horn sounding unexpectedly or not working when pressed.
- ✔ Instrument cluster gauges behaving strangely or warning lights appearing without cause.
- ✔ Remote keyless entry fails to work consistently.
Your Straightforward BCM Installation Guide
For the Savana and Express vans, the BCM is typically located in the center dash area, making it accessible for a DIYer with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: You will need to remove the necessary dash trim panels to access the BCM. On these vans, it’s often behind the lower center dash or glove box area.
- 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 BCM: Mount the new, pre-programmed module in the same location and securely reconnect all 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 (without starting the engine) and test all body functions: lights, locks, windows, horn, and wipers.
- Perform Relearns (If Needed): Start the vehicle. If you see an airbag light or notice brake light issues, you may need to perform the post-installation procedures mentioned below with a compatible scan tool.
Post-Installation Requirements
Our cloning service handles the majority of the setup, but some vehicle systems require a final handshake after installation. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Compatibility for Your Vehicle
This Body Control Module is a direct replacement for a wide range of GM vehicles and is guaranteed to function correctly if your original module carries any of the following part numbers:
Interchangeable 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
This module fits the following vehicles (and more):
- 2008-2012 GMC Savana 1500/2500/3500 Van
- 2008-2012 Chevrolet Express 1500/2500/3500 Van
- 2007-2012 GMC Acadia
- 2007-2009 Chevrolet Equinox
- 2006-2012 Chevrolet Impala
- 2010 Chevrolet Tahoe & Suburban 1500
- 2010 Cadillac Escalade / ESV / EXT
- 2008-2013 Cadillac CTS
- …and many other GM models listed in the fitment guide.
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you simply provide us with your vehicle’s 17-digit VIN. We use this to access the latest GM software and your vehicle’s specific configuration, then flash this data onto the module before shipping. This ensures it’s ready for installation when it arrives.
Do I need to send my old BCM to you?
No, this is a cloning service performed on our replacement unit before it ships. We do not require your original module. Your old part is returned to you along with the programmed replacement.
Is this a simple plug-and-play installation?
For most vehicles, yes. Our programming handles the critical setup. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal sensor using a scan tool if a related warning light appears after installation.
What if this doesn’t fix my problem?
While this BCM resolves the vast majority of electrical issues described, modern vehicles have complex systems. If problems persist, it could indicate an issue with wiring, a sensor, or another module. We always recommend proper diagnostics to confirm the BCM is the root cause.
Why choose this over a used part from a junkyard?
A used BCM will be programmed for a different vehicle and will not work correctly in yours without being reprogrammed by a dealer. Furthermore, you risk buying a part with the same internal faults as your original. Our module is tested, verified, and programmed with fresh software specifically for your van.