i just replaced the orfice and dryer/accumulator on the H2 then pulled a 45 min vacuum ....held vac so i then put the 1.6lb of freon in the system.....it's getting to around 43-46 degrees at the center vents but on hot days it struggles to get down to 71 inside on auto function...has anybody checked the temps at the vent to see what temps they are getting?.....on my new Denali i'm getting 35-38 at the vent so im wondering now if the H2 should be blowing colder air out of the vents

 

Mine is also @45/46 when running, and creeps up to 50 at stops (idle). I need to get the freon pressure readings but haven't had time. I flushed my coils but that is all so far. May be a slipping fan clutch, loose belt, or who knows what else. You can see some of the comments/questions on my thread regarding this same topic.