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...
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What wnjj said, I had an older (86) S-15 with 4wd that would not work, replaced the vacuum lines associated with the 4wd and all was good.
