Tech tip: Have someone sit in the truck with the engine off and the stering unlocked. Have them rock the wheel back and forth. Look under the truck at all the steering linkage. Look at the tie rod ends and check for movement. All the parts should move at the same time. If the ends are bad one part will move slightly before the other part it's connected to. If there is any movement between the tie rod end to the drag link or spindle the tie rod end is bad. They should only move side to side. Up and down is no good. Twisting is OK.