Hey guys, i'm new to this site, and recently ive experienced problems with my 1999 Sunfire 2.2L. while reverseing yesterday out of parking spot, my entire car jumped as if i hit a huge animal. I gave it gas an my car went no where, i put in drive went back into the slot, and put it back in reverse only for my hole car to jitter. It wouldnt move after that until i gave it gas an the tachometer went to 4k, it then did a violent jolt and i was able to go home. Does anyone know what the problem of this is? (P.s. the tranny is AT) Any knowledge on this would be great, thanks!