2001 - Grinding, Rattling, Squeaking

I just bought a used 2001 Chevy Cavalier, 4 door, automatic, basic standard edition. 60,000 Km

now, during the test drive, it ran and purred like a dream.
now when i drove it today, i heard a squeaking whenever i hit a bump, i heard a rattle on the dashboard whenever i hit a bump, and there was an inconsistant grinding noise under the hood. also, after the drive i popped the hood, and it smelled a bit like rubber.

im really fuckin pissed, any ideas whuts causing these?

squeak is probably the struts and or springs

Dash rattle is normal in cavs some rattle more than others.

Burt rubber may be a loose belt and its slipping. It may also be the cause of your squeak but don;t know why its only during bumps, so the squeaking I;m still leaning towards the springs/struts

also, new front brakes were just put in

all i know for sure is im goin back to the dealership tomorrow to raise hell