Front wheels not engaging

Asked by Jan 22, 2017 at 07:22 PM about the 2001 Chevrolet S-10 4 Dr LS 4WD Crew Cab SB

Question type: Maintenance & Repair

Transfer case sounds like it
engages and it lowers gear ratio in
4 lo but going up icy hill back tires
spin in both 4hi and low

1 Answer

20,415

There is a vacuum actuator under the battery tray and a vacuum switch on the transfer case. As well as the vacuum lines in between all of that. If the actuator holds vacuum and the lines are good then the switch may be gummed up and need replaced. I see alot of the actuators have a tear in the diaphram

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