Only owned a few weeks so far - I want to address some of the complaints I read here before buying. First, the back of the seat does adjust and there is a lumbar firmness adjustment. My wife is particular about back support and she really likes the comfort. Second, the rear headrests do restrict view a little, but all you need to do is fold down the seat. If someone is in back their head would block the view just as much as the headrest - use the rear view mirrors. We have the Z71 with the 3.7. The ride is not as smooth as a car but it passed the wife test, she really likes the ride. Not a rattle or squeak anywhere either (bought it used with 13k). Overall very pleased so far.
Good ride for a truck, right size to fit in parking spaces, plays MP3 in dash, plenty of room for kids in back, slot in bedliner - put a board there so stuff does not slide forward in the bed.
These issues are MINOR: Rear fender flares nicked from stuff coming up off front tires - should probably come with mudflaps std on Z71. Notice a fair amount of tire noise with windows down, could probably put a highway tire on the 2WD version. Provide adjust to raise seat to provide leg support.