Steering wheel has about 1 inch play in it and vehicle will wobble when a bump is hit in the road also has a rattle noise in steering column not necessarily a clunk. New tires and new inner tie rod ends and alignment.
Play in steering wheel on 2006 GMC Sierra 1500
You will need to check for play starting at the steering column, there is a universal joint in the column the worn your way down the steering column and feel for play as you get a friend to gently move the steering wheel from side to side taking up only the "play" (be careful not to catch your fingers). Check the steering gear for play, if steering rack check for play in tie rod ends and inner tie rod ends, if steering box check for play in the drag ling and pitman arm joints. Jack up the truck and check for suspension and steering play .
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I agree mith the reply you got from Master.