No heat on 2016 VR6

My 2016 with 88k has no heat, not even slightly warm air. I looked at other threads about the same issue and thought the heater control valve may be the culprit so I pulled the fender liner tonight. The valve looked fine but with the car at operating temp there was no coolant going to or from the valve.
There are no visible coolant leaks, no overheating issues, and the coolant reservoir is at the bottom line when hot.
My next step was going to be topping of coolant and seeing if I can get any air bubbles out and if that doesn't yield results maybe flushing the system. Any input would be appreciated!