Ben Johnson
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- Oct 13, 2020
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I have a 2004 GMC Yukon XL with 238K miles on it that has begun randomly shifting into 4WD while driving. It seems prone to do this after longer runs. There is no issue with the lights on the switch. There is no "Service 4WD" message being displayed. Sometimes I can shift back into 2WD right away. Other times I can get it into Auto 4WD and it seems to stay in 2WD. No real pattern to this, but would love a hint on what to look for as this is my daily driver/work truck. I am even open to a "redneck" solution that leaves it in 2WD all the time.