Car Problem Reports

GMC Yukon Denali 4WD Transfer Case Position Sensor/Selector Switch May Fail

GMC Yukon Denali Problem
2 Reports
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Model Years Affected: 1999, 2005

Drive Train Affected: 4WD


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.

  •  Rookie

    really never used 4 wheel drive when i put in park or neutral and press 4 high or 4 low from 2 wheel drive it makes a clunk noise but goes in but doesnt always want to come out it takes a few trys and service 4 wheel drive light comes on after i start driving a few miles down the road dont know what it is put it on machine no code came out?

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