93 S10 4 wheel drive problem "UPDATE"
have a 4.3 ltr. automatic, s10 pickup (93) with the 4 wheel drive selector on the floor it has a shift "lever", as opposed to the ones with the switch mounted on the dash (button). Its not been drive...
Forum Discussion
If its vacuum operated the switch is probably on top of the transfer case. The rubber lines can become unplugged or dry rot over time. If dry rot, trim the rubber lines, extend and plug back in.
