When the A/C is not blowing cold air is the compressor engaged and turning?
Not just the outer ring where the belt rides but the center of the compressor.
It has to turn or you will never get any cold air.
If yes the next step is to put on a set of gages and see what you have for high and low pressure.
You might have a weak compressor or a blockage in the system.
2014 Equinox LTZ FWD 3.6L. V-6 (LFX)
GM6T70 Transmission-Gen II(M7W)
Crystal Red Tintcoat-Brownstone Leather-(FE2) Suspension-18" Wheels
Build Date: Nov. 04, 2013-Delivery Date: Nov. 25, 2013