I had a 03 ext cab Z71, it did ok offroad with all things considered and the rear locker is a much needed improvement for offroad too. Not all Z71's came with lockers and if yours didnt I would not get too crazy offroad. I agree with the above that the front is a little on the soft side and the they are long in the wheelbase dept, but it makes a nice ride and you have to watch the bumps or you will bottom out the front suspension. I would stay off any trails that are known for offroading.