I'm new to the site and I just picked up an 96 Chevy 2500. I repaired the whole truck and went to take it for a ride and it won't go into over drive. I plugged the scanner in and it said selonoid b was stuck off. So I replaced that and changed filter and fluid and still has same problem. The scanner said the input and output sensors were working properly. I just hope the tranny isn't bad it only has 100k on it. Any help would be greatly appreciated.