Chevrolet Repair: SILVERADO 1500 EXTENDED CAB, component failure, mechanical work

Question
ONCE A WEEK I WILL GET A MESSAGE SAYING "SERVICE 4WD" AND THEN IT WILL GO AWAY FOR AWHILE. MY TRUCK IS A 2001 WITH 24000 MILES ON IT. DO YOU KNOW WHAT THAT COULD MEAN?
THANKS  

Answer
Most likely an intermittent sensor or component failure that should NOT be ignored.

What mechanical work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made.


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