If I remember , the wheel , the caliper , the dust protector , a clip holding the rotor , the big nut holding the axle and the 4 screws holding the hub

Was a easy job , there are a couple videos online you can check , If you dont find any under hummer category look for GM 2500 , it is the same procedure .

Make sure you have a impact gun at hand , very useful to remove the center nut . any impact gun will do the job .