The service 4 wheel drive light came on. I just turned over 100,000 miles. on 2002 Chevrolet Silverado 1500 HD

What is needed to service the 4 wheel drive and what all do I need to do for the 100,000 miles check up?

by in North Highlands, CA on April 08, 2009
4 answers 1 comment
ANSWER by on April 10, 2009
The service 4 wheel drive light does not mean "service" 4 wheel drive. The service 4 wheel drive light is like a check engine light for your 4wd. There is a fault code stored in the 4wd system. The stored code must be read and diagnosed. When the system is repaired the service 4wd message will go off.
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COMMENT by on November 22, 2010
Thanks Russ Found your answer to be most helpfull. Jim from Nova Scotia
ANSWER by on March 28, 2010
what does in mean to service my 4wheel drive in my 2004 chevolet suburban
ANSWER by on March 29, 2010
To "service" your 4 wheel drive system if it is functioning correctly all that would be necessary is changing the fluid in the transfer case, front differential, and rear differential.
ANSWER by on January 03, 2011
I had the same problem, the light on my selector button would sometimes work and other times would go out. Replaced the switch and have not gotten the service 4wd sense. Seems the light blinking would send a message a trigger the code.

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