The vehicle must be on a level surface when checking the coolant level.
It is normal to see coolant moving in the upper coolant hose return line when the engine is running.
Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down.

If coolant is visible but the coolant level is not at or above the mark pointed to, add a 50/50 mixture of clean drinkable water and DEX-COOL coolant.
Be sure the cooling system is cool before this is done.
What to Use
How to Add Coolant to the Coolant Surge TankUsing the USB Port
The infotainment system can play music or movies by connecting an auxiliary device
to the USB port.
USB Support
If equipped, the USB connector is in the center stack, and uses the USB 2.0 standard.
USB Supported Devices
USB Flash Drives
Portable USB Hard Drives
2G–5G iPod nano®
1G–3G ...
Radio without Touchscreen
/VOL (Power/Volume)
Press to turn the system on and off.
Turn to adjust the volume.
Preset Buttons 1-6
Press and hold to store a station.
Press to go to a preset favorite station.
MENU/TUNE
Press to open menus and select menu items.
Turn to highlight menu i ...
Instrument Panel
Air Vents on page 8-3.
Exterior Lamp Controls on page 6-1.
Horn on page 5-2.
Instrument Cluster on page 5-8.
Windshield Wiper/Washer on page 5-3.
Infotainment on page 7-1.
Information Display.
Hazard Warning Flashers on page 6-3.
Instrument Panel Illumination Control on page 6 ...