My transmission was replaced last week at 97.5K. I just discovered that Sportshift's behavior is erratic. I will shift into ss mode. Maybe shift from 2-3, 3-4, but the lever ignores my request to go back to 3 or up to 5. I may go back to auto mode then back to ss for it to "reset", but it still may ignore my requst. I may be cruising around 30, then go into ss mode while still in 4rd gear. Lever ignores any request to shift up or down. If I come to a stop, then try it all again ,it will work normally, at least for a moment. anyone else experience something similar?

 

Sounds like a problem to me. Mine shifted smoother and with less action post tranny swap. I'd take it back...

 

Same here.....definitely take it back.