Re: 2003 chevy tahoe stuck in 4 wheel high
I have an 05 Tahoe 5.3L 4WD, that began dropping into 4Hi by itself while driving. After much back and forth with the Dealer with multiple supposed fixes and software updates, they fixed it. Not clear on what they did exactly, as I'm not sure even they know, but I do recall them saying fluid dripping on the the transfer case control module and switch is known to short out and cause 4WD to engage by itself. Although they told me my transfer case wasn't leaking fluid. Said the fix was replacing the module and switch.