Originally Posted by
boatnt
been a chevy trans tech for 26 years now....1994 is the early model 4L80E,,no selenoid or anything ecm controlled or electrical will cause you not to have reverse,one of 3 things happend ,,servo piston broke....reverse band broke,,or the reverse band anchor pins broke,,must drop the valve body to inspect servo piston and replace if broken,,if pins broke you will need a new case,,if band broke you will need to replace band and would be a good time to overhaul the trans while apart...sorry but no quick fix for this one