I would start a new thread describing your exact issues. This thread is almost 3 years old.

 

Hey all 2006 4x4 z71 go over bump and rattle sounds like in column or in dash . I have 96000 miles been there since 90000 miles had ft end work still there. You know go over bump fast or slow tried to find what could have come loose cant find squat. Any ideas? send me message direct if possible. Like truck HATE rattle over bump rattle big bump small bump fast slow in lot always same rattle. Like something on column or under dash is just loose. Lousy gas mileage not cold air but nicE truck EXCEPT fo rattle