Restore Full Electrical Control to Your GM Vehicle
Are you dealing with baffling electrical issues in your GMC Savana or other GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a frustrating no-start condition can often be traced back to a single component: the Body Control Module (BCM). As the central command for your vehicle’s body electronics, a failing BCM can create a cascade of problems that are difficult to diagnose. This isn’t just an annoyance; it can compromise your vehicle’s safety and reliability, especially for a workhorse like the Savana 1500.
We offer a direct, reliable solution. This BCM, corresponding to part number 15948439 and many others, arrives at your door pre-programmed with the latest GM software, specifically flashed to your vehicle’s VIN. This eliminates the need for an expensive trip to the dealership for programming, saving you time and hundreds of dollars. Get your vehicle’s essential functions back online with a part that’s ready for installation right out of the box.
Case Study: A Tricky Diagnosis
A customer brought in his 2011 Savana 1500 work van last month with a list of strange symptoms. The dome lights wouldn’t turn off, the driver’s side power lock was intermittent, and the radio would randomly shut down. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed several communication error codes pointing toward the BCM. These modules are notorious for causing these kinds of “ghost” problems due to internal circuit board failures. Instead of a costly diagnostic and programming session at the dealer, we ordered one of these VIN-programmed units. The install took less than an hour, and a quick post-install procedure cleared everything up. The van was back on the road for its next job the same afternoon.
Is Your Vehicle Showing These Electrical Gremlins?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit:
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The vehicle’s security system engaging randomly or preventing the engine from starting.
- ✔ The horn honking unexpectedly.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Communication errors with other vehicle modules (DTCs starting with ‘U’).
A Straightforward Guide to BCM Installation
Replacing the 2008-2012 Savana 1500 BCM is a manageable job for a DIYer with basic tools. On the Savana/Express vans, it’s typically located behind the center dash panel. Always consult a repair manual for your specific model’s location.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the old BCM.
- Disconnect and Remove: Unplug the electrical connectors from the old module. 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 your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Perform Final Procedures: Reconnect the battery. Crucially, you must perform the ‘Setup SDM Primary Key in BCM’ procedure with a capable scan tool to sync the new BCM with the airbag system and clear the warning light. Some models may also require a Brake Pedal Position Sensor recalibration.
- Test All Functions: Start the vehicle and test all related functions: lights, locks, windows, horn, and radio to confirm the repair was successful.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide array of General Motors vehicles and interchanges with numerous part numbers, ensuring broad compatibility. Please verify your vehicle is on the list below. This unit replaces part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, and more.
Frequently Asked Questions about the 2008-2012 Savana 1500 BCM
What does a Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, security system, wipers, and more.
Why do I need to provide my VIN?
Your VIN is essential for us to program the BCM with the correct software and vehicle-specific options for your 2008-2012 Savana 1500. This ensures it works seamlessly once installed, without needing a dealer visit.
Is any additional programming required after installation?
No, the core programming is done before we ship. However, you will need to perform a security relearn procedure and potentially a ‘Setup SDM Primary Key’ function with a scan tool to sync the BCM with the airbag and anti-theft systems.
Can I install this part myself?
Yes, if you have basic mechanical skills and tools, this is a very manageable DIY repair. The most critical part is performing the post-installation relearn procedures.
Will this fix my ‘Service Airbag’ light?
If the BCM was the cause of the light, yes. After installing the new BCM, the ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible diagnostic tool to clear the light and ensure the system is operational.