Chevrolet Silverado 3500 Problem Report

Chevrolet Silverado 3500 Service 4WD Message May be Displayed

(7 reports)

The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.

Service 4wd on message center.no lights illuminated at selector tree.leaking oil at rear of transfer case -
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