1994 silverado 4 wheel drive won't work


Old 12-27-08, 09:11 AM
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1994 silverado 4 wheel drive won't work

I have a 1994 silverado that won't go into 4 wheel drive. The shift mechanism seems to work fine but nothing happens, could it be electrical?
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Old 12-28-08, 11:02 AM
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Yes, it is more than likely the front diff actuator being faulty. Disconnect the front diff actuator connector and check for power and ground while in 4 wheel drive. If there is power, the actuator is bad-common problem. There is an updated actuator that engages quicker. Upgrading to this one requires routing a wire and splicing into a wire at the transfer case harness.

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