hey there everyone, im having an issue with my auto transmission in my 91 hilux surf ssr limited, when i went to put it in gear the other day it didnt click in and the truck didnt go anywhere it sat there revving, i put it through all the positions on the gear lever and it didnt change, also my o/d light flashed but hasnt done it again, any ideas? cant be the clutches because atleast one would work... cheers