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Chevrolet Silverado SS Problems

Service 4WD Message May be Displayed on Chevrolet Silverado SS

Problem Description and Possible Solution

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.

(3 people reported this problem)

Chevrolet Silverado SS Vehicles With This Problem

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Average mileage: (–)
3 model years affected: 2003, 2004, 2005
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