Hey yall,new guy here looking for some advice.I have a 2003 gt with an automatic.it is bone stock and has been taken very good care of with 62000 miles.It has a tranny vibration when the rpm's are low, in 3rd or overdrive as you give it a little gas but not so much that it will down shift.If ti down shifts it wont do it,just in 3rd or overdrive.Am I slipping?Does it have something to do with the lockout converter?Any help would be greatly appreciated.Thanks

 

How low of RPMs? Or at what speed?

 

hey dude, change your fluid. it will help with the problem, but it wont fix it