Trans slippage, help

Jeffyh

Member
May 7, 2004
64
0
6
Alright I've been having soft shifting between 3-4 for a while and sometimes chattering. But other than that nothing wrong.

Yesterday I got my rear differential oil changed. When I left the place, my transmission was slipping untill it hit the high rpm's in 1,2,3 and in 4th completely slipping.

Can this possibly be from a overfilled transmission or possibly anything to do with getting the rear oil changed? There's no reason it should've completely crapped out on me just then.