Why does my Chevy k1500 4WD not engage?
Why does my Chevy k1500 4WD not engage? As far as i know just replacing the axle shouldnt effect if it goes in 4x4. If it will not even go into low range sounds like a transfer case problem to me. What does the 4x4 do not engage on a 1990 Chevy pick up? Re: The 4x4 do not engage on my 1990 chevy pick up what... On the full size, the front actuator is electric, not vacuum. When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown)...