89-drive to reverse sounds

getting kinda worried and pissed.. when i am either P, N or D, and i put it into R, somthing jiggles hardcore and makes some loose sounding noise, i can feel it in my feet. the higher the RPMs when i shift into R , the louder the jiggle.. also, the same jiggle and loose sound of metal is present as i hit a bump or somthing when i am driving in D .. kinda worried..

anythign esle.? e-mail me [email protected]