A/C blowing hot air, how do I fix

So it has been filled both the front and the back. No leak in lines. It turns on & air blows out strong but no cold air in the front and light cool air in the rear. Help lol could it be a sensor or relay malfunctioning?

A/c not working drivers side blowing hot air

Temperature gauge drops to zero AC will not come on. You can pull a fuse to get it to go away, but that does not fix the problem. Also changed maybe a temperature sensor went away for a while and has now returned. Going to try the wiring plug next, but other than that, do not know the reasons recently changed water pump, maybe a vapor locker or something any help would be appreciated

I have a 2015 GMC Yukon and the rear climate control temperature is stuck on HI. The rear temperature will not change from the front controls or the rear controls. I already replaced the rear climate control panel, but the problem is still the same. The rear display always shows HI and the temperature does not change. I want to know if the problem could be the rear blend door actuator or the rear HVAC control module.

Beverage cooler repair no good work cold

Ac compressor not engaging

From one day to another AC stopped blowing cold