4x4 stuck in 4 wheel high on 2002 Chevrolet Silverado 1500

indicator light says 2 wheel high, but is locked in 4 high... and now when shift truck into reverse it changes the transfer case into neutral... so it wont back up...put back into drive and it goes to 2 wheel high, but it is locked in 4 high.. the light just says 2 high..

by in Frankfort, IN on August 13, 2013
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1 answer
ANSWER by , August 13, 2013
scan codes and post so we can adv