Intermittent A/C blowing

[Elkhunter]

I have a 2005 Yukon. Separate Front and Rear AC. The front AC seems cold enough but when the truck is first started with the AC set to Auto I'm barely getting any air. Once I drive for 1-3 minutes it will kick in and start blowing normal. I tried manually working the speed but during that 1-3 min time nothing will make it blow more. If I cut the truck off and come back in a few min to a couple hours it may work fine or may experience the same symptoms. I'm trying to figure out where/how to start trouble shooting. It seems from reading other posts here it may be the actuators or the pressure switch. I didn't seem to fins this exact issue so I started a new post. I do hear the compressor kicking in and like I mentioned there is a tiny bit of air and it is cold at the beginning.The rear AC is functioning fine. Thanks in advance.