what is the most likely problem when service 4wd light is on randomly on 2006 Chevrolet Silverado 1500

Service 4wd message Diagnostic code CO327 and CO379

by in Livingston, TN on March 30, 2013
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1 answer
ANSWER by , March 30, 2013
transfer case may need to be serviced. possible dirty connection. bring to a tranny shop and have them run a diagnostic(more thorough). tranny tech. advise.