I got a '05 Colorado Z71 4X4 w/3500 5cyl & 4 speed auto, it now has
9000 miles on it. I just brought it to two dealers with this problem. I live on a hill, and when I came home from work , and went to back up the hill to my driveway, the truck "stuttered" (the best way I can describe it), like I bad gas but only in reverse!( bad hesitation) I tried it over the weekend, and when it is cold, I can "leave a patch" after driving a while, and tried, no patch but it stuttered! The dealer told me "that the way they are! It is stated in your manual!" I asked him how come only happens when it is hot! he said I tried a new one, and it did the exact thing! I was wondering if anyone else has had this happen? HAS ANYONE!!Thanks Frank Raleigh NC