Trouble with reverse....Please Help IM LOST!!!

[TurboDreamzGST]

ok so with my car, just recently it started having trouble going in reverse. I put it in reverse and as i begin to back up the whole car begins to almost jump up and down as it feels. The car will go in reverse but very slowly and I mean when it jumps up and down its to the point where the whole car is shaking and it feels as though the car is going to fall apart if I dont push down the clutch to stop it. Can anyone tell me what's going on, whats wrong, and how to fix it please? BTW its a rebuilt transmission was installed about 9,000 miles ago with a new clutch and we had the flywheel cut at the same time as well. PLEASE HELP!!!

 

[lexx620]

check the basics, clutch master and slave cylinders. do u have too much play on your clutch pedal?

 

[TurboDreamzGST]

both the slave and master clutch cylinders were replaced along with all the clutch fluid lines. The pedal still feels the same as when I got the car, easy to go down and very responsive and my clutch fluid resevoir is full as well.