Im new to this forum. I have a 94 S10 Blazer. One day when i was just cruzing at around 40 my truck down geared by itself.(Its an Automatic) The truck still drives but i dont have 1st and 4th gear. 2nd and 3rd are fine. Anyone have any idea what could be wrong with it.

 

I would think that your transmission either needs to be replaced or rebuilt.

 

Every one i talk to say they dont think its the tanny itself but something electrical. But i dont know what or where to start