I own a 2004 Colorado extented cab ZQ8. I love my truck. The only problem I'm having is the AC works good on 4 but on 1,2,3 don't hold your breath. I have 62,000 miles and I still get around 24 - 27 mpg. This truck has the get up and go. I turn heads and when I'm on the freeway people move out of my way. I'm not sure if it's the yellow that makes them move or if they are letting me by just to get a glance of the beauty
It's hard to pick just one. I love all the features of my truck.
I have the same complaint regarding the air condtioning with my 2010 Colorado.
The compressor works on a relay type switch and shuts off when it reaches a certain ambient temperature.
It's not as cold as the a/c in my old GMC Sierra which was a disappointment.