thern

Was on a trip stopped for food continued the trip and noticed that all of the gauges quick working and it would not shift out of 2nd gear. replaced the computer on advice from someone. No change just like I had not wasted 2 hours and several hundred dollars. It is a 1991 Tiffin Allegro Bay. Runs and looks great and have had no problems until this. it has a 454 Chevy. Please help.