GMC Sierra 3500 Problem Report

GMC Sierra 3500 Service 4WD Message May be Displayed

(5 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.

Related Items:
the 4 wd switch is dead rear windows are dead a/c dead
The CD player may fail due to an internal fault with the radio. Our technicians tell us that i...