prozach
10-03-2007, 02:07 PM
I have a 1993 5.7 with 156k on it and the tranny for some reason in overdrive when cruising the rpms keep jumpin up to about 500rpms higher and its sounds like it is slipping, it will jump back and fourth for a while then just stop and drive normal. only does it about once a week. do you think it is somthing wrong with the electric overdrive or do you think the tranny soon needs rebuilt that is the only problem im having with it.