Car is messing up on me

My problem now is< my car sometime, the radio will quit playing and the door chimes < all dash lights come on and then goes off> Basically it like the car goes dead, But i still can go b/cuz the engines is still running. it does it when i hit big bump < so it might be a short or something eletricaly. But what, Has anyone had this problem < 02 gt>:banghead:

most likely a bad ignition switch harness assembly. Fairly common problem on 97-03 Grand PRix's.

How much this cost to get fixed is this something anybody can do, Or just the dealership fix

Not impossible for a DIY, and any decent shop can do it. It is not a Stealership only job.