I'm new here so be nice....
I have an '05 quad cab 4x4 with AT and just passed 70k miles. The truck is driven primarily 7 miles each way to work. Almost every morning and every evening (after the truck's been sitting) there will be an ever so slight hesitation when I put the truck in drive -not the engine hesitating but the transmission feels like it's not quite in gear. If I start the truck up and wait to put it in gear while I'm putting my seat belt on and taking off my ID badge and then put it in gear it's fine -no hesitation.
One other thing I'll mention, this winter we actually got a fair amount of snow and so I drove it in 4x4 mode more than I ever had. It seemed to me that this hesitation issued got worse when in 4x mode - happened not just when the truck was cold but when warm as well.
I have no idea on the issue - sticky valves in the AT? Any thoughts would be appreciated.