Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.
IS this on both sides or just one?
Are you testing with the system set to max witht he recirc on?
both sides (drivers and passengers) outside temp 88 and high humidity (Atlanta GA). I have an 07 Yukon XL so I know what feels RIGHT. Yes, tested at various settings, as I stated in description, recirc feels cooler (not cold but closer to normal) and somewhat drier than without "recirc" on.
I can get a canister from Autozone, correct? I doubt it has a dye in it, or does it? IF not, how would I go about injecting dye?
As for AC Pressure(s), I can use the "borrow a tool" program at Autozone to check the pressures, I think. Is it a process you can explain or is there a utube clip that shows it? What pressures are considered "good"?
Sorry for delay in reply... had a chance to take vehicle to a mechanic for a free analyis. His opinion is that since it doesn't have a cabin filter, that the coil may need to be cleaned with an aerosol coil cleaner, which can't hurt. Your thoughts?
As for the freon level, despite the mechanic's opinion that the freon level is probably fine, (he didn't put gauges on it to test pressures), I think that the freon might be low. It takes too long to get cold (at the vent). He tried to sell me on the truck being black and the interior being black leather and that was why it was taking longer, but honestly the air is not as cold as my 07 Yukon XL and it takes considerably longer to cool the cabin, again which is smaller than the huge cabin of the Yukon XL.
I plan to try to borrow a set AC pressure gauges from Autozone and get a canister of freon in case it is low, as I suspect it is.
Added freon with no issue.. Didn't realize the ports were different sizes. Duh... Anyway we'll see how much of a difference it makes for now. If no difference, then we'll try cleaning the coil under/bnehind the glove compartment.
Just as a last question, it seems like this truck produces alot more condensation drainage than any other vehicle. Does that give you some idea about what else might be wrong?