2004 chevy silverado, 5.3. After being put in AUTO 4wd for a while, the " service 4wd" light comes on, and it won't switch out of that position, to 2wd or 4wd. After shutting the key off and starting back up, things are back to normal. It will switch between 2wd adnd 4wd fine.
Had it at the dealer, and it didn't do it for them
Chevy 4wd troubleshoot, calling Indy?
