There is a really bad feeling with my car. when i shift gears in the lower gears and come to a stop semi sudden i feeling a really hard bumping sound and feel it. it feels like something is shifting underneath my car. i do not beleive it is my driveshaft because i got down there and checked that. i also checked the cross member on under my transmission and all those bolts are tight. i dont know where else to look and the feeling is horrible!

 

check all the mounnts motor and tranny