sooo, i know the max ac feels good, colder and blows faster then regular AC, but is there any draw backs using it? i heard gas milage goes down considerably more...

 

Curious about this myself, what with Summer here now...heat to follow.

 

No drawbacks. Max A/C recirculates the cabin air and turns off the heater's coolant flow valve so it cools the interior much more efficiently. It will not reduce your fuel economy any more than normal A/C. The blower speeds are unaffected but sound louder because of the recirculated airflow.

 

i know that in my moms bravada theres an option that you can have that when it gets to a certain point it turns off.. then when it gets to hot it turns back on.. kind of cool.....No pun intended LOL.

 

That's awesome, I was driving on the highway with normal ac yesterday thinking if I flipped it to max ac I would get worse mileage... Thanks

 

I like to use Max AC when off-road to help keep from pulling dust in the cab. Unfortunately, it gets too cold. I am in the process of figuring out how to put a valve on the vacuum control lines to allow the heater coolant control valve to be operational with Max on.

I have looked at the schematics and it appears to be possible. I have found a valve that looks like it will do what I want. Now I need to get in there to make the changes and see if this mod works.

 

so max a/c is better in dusty areas eh? I got behind an old truck today smelled so bad... wish I had cut it on max a/c before I got behind him...