Nobody has really answered this...

When I'm driving down the road and i hit a bump, i get a loud squeak in the rear portion of the car and a rattle there also. What causes this. Also... i want to go through the entire suspension and replace most everything...what brand kit would you guys recommend?

 

its a f-body thats over 10 years old chances are most of them do it.they are known for it. mine is starting to too if i was going to put suspension i would go all after market poly bushings from jegs or somwere like that. i prefer poly because it feels tighter. good luck.

 

If you want to get rid of your squeaks and rattles don't put poly urethane bushings on it. That will only make it worse and the ride much harsher. You will feel every little imperfection on the road.

If you want to get rid of squeeks and and rattles get a set of SFC's those help alot. Also take off you door panels and look for sources of rattling. To get out all the squeeks & rattles from the door will take a bit of creativity and enginuity, but a good start is using some type of soft fabric to cushion areas where there is metal on metal.

Since you have noise coming from the rear of your car it could be the spare tire and jack. They sit loosely in the passenger's side rear wheel housing. I just got rid of mine and that greatly reduced they amount of noise.

There is alot more info on this subject. There is a few really good threads on getting rid of squeeks and rattles. Just do a search.