I have a 2002 grand prix gt with a 3800
my 2002 grand prix gt for no reason it started making a clunking noise and my left CV shaft is all greasy and I still have fluid in the trans but I cant go anywhere can someone give me a clue what it could be when I put it in the air the tires move when in gear but when I put my foot on the brake to stop it make more noise what is wrong please help.