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2002 Yukon service 4wd
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Question
snowfool
Started having issues recently. Can drive all day in 2wd......when shifted to 4wd we can sometimes drive a mile, sometimes 5 miles until we get the service 4WD message and the pushbutton lights go out. Restarting the vehicle usually lets us shift back into 2HI. I've swapped the pushbuttons with my silverado thats known to work and also swapped the transfer case shift motors thinking it may have been the encoder. Anything else I can do to save a trip to have it scanned. Its really difficult with younger kids in half day school, one full day, working nights and all things in between for me to get to a dealer while the light is on for it to be scanned. I'm planning on cleaning the grounds under the door when the wife gets home. TCCM related maybe? Thanks for any help.
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