Various infotainment conditions caused by aftermarket equipment connected to the multi-media, USB or auxiliary input ports may be found on some 2013-2015 ATS, CTS, SRX, and XTS models equipped with the CUE system

2014-2015 Regal and LaCrosse models equipped with the IntelliLink system; 2014-2015 Canyon, Sierra, and Yukon models equipped with the IntelliLink system; and 2014-2015 Colorado, Corvette, Impala, Silverado, Suburban, and Tahoe models equipped with the MyLink system.

The infotainment conditions may include blank displays, flashing displays, error or update failed messages, the navigation map not loading, or Bluetooth or USB concerns.
If any of these conditions are present, check for any devices plugged into the USB ports, SD card slots, or 12 volt accessory ports. (Fig. 9) SD cards mount almost flush to the port and can be difficult to see.
Remove the devices prior to diagnosing any infotainment concern.

Many vehicles also have a USB port that can only be accessed by raising or lowering the radio display/control assembly. Verify there are not any devices in the storage bins behind the display/control assemblies, if applicable