Service 4WD

watatrp

Senior Member
Location
South Bend, IN
I have a 2001 Chevy 4X4. The "Service 4WD" light comes on ocassionally. Usually goes off the next time I stop and then start up again. When the light is on, I can't switch from 2WD to 4WD. Would be a problem if it happens when I'm trying to plow. The dealer says that it is most likely a faulty sensor. He says to bring it in when the light is on. My problem, it happens maybe once a week and never when I'm near the dealership or when it's open. How do I get this fixed? Anyone else had this problem?
 
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watatrp

watatrp

Senior Member
Location
South Bend, IN
Unfortunately that is not the case. Had the truck in for periodic servicing and they tried to get the code and found that the code is not one that is stored. On the way home the light came on so I turned around and went back with the truck running and the hooked it up and were able to get the code then. Ended up being a faulty sensor and covered under warranty. I guess it's a pretty common failure.
 

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