What would cause the car to jump when shifting into reverse. on 1996 Oldsmobile Bravada

All other gears are smooth and it happens only in reverse

1 answer 3 comments
Check the motor when putting it in reverse, it will probably jump because of a motor mount.
No reply.
Thank you it turns out it was the motor mount and i bought the car from a lot that didnt do a tuneup before it was sold so i then replaced all fluids and it runs great