4T60E, no gears when warmed up...

Got a 93 olds that goes into no gears at all after about a mile or so, also can hear pump sucking air before this happens , just changed filter and fluid about 100 miles ago, it also has a problem going from reverse to drive it will not move till you drop to 2nd then back to drive??

Welcome to AF. Possible you did not get the filter properly installed, did it do this before, you left that out, if so the trans is done.