Quote:
Originally Posted by yakkk
2004 Z71, recently was stuck in 4WD after coming off the beach. I removed the selector switch from the dash and it would work, pop it back in and it wouldn't. Replaced it with a Dorman switch and it now switches fine, but I still get the "Service 4WD" indicator after driving a while. It this a code that need to be reset manually?
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the 4wd service light comes on when it senses any abnormality.reset is done at each starting of the engine. my guess is the new switch is bad. I would get a GM drive train capable scanner and find out what the code is then post here . the old OEM switch does have solder issues so if you can do it properly re solder the switch pins on that ckt board.