Woke up this morning and my dash says "4 wheel drive service" and my selector switch will not stay in auto. Im at work for 12 hours just seeing if I can get an idea before I get home to work on it. Works in 2 wheel drive and 4 wheel drive but will not stay in auto. Thanks for any suggestions

 

Welcome to Chevy - please post the details on your ride - yr etc

 

It's a 2007 tahoe , with a 5.3. All stock funny thing is is when I came out of work yesterday after I had posted this thread and started my vehicle and everything seemed to be fine and there was no indicator light for the 4 wheel drive. All I can say is that it was the first single digit morning of the season and as the day progressed and warmed up , it seemed to work itself out. And it was just the auto option on the selector switch, the light would blink and would not let me engage in auto. 2 wheel drive worked so I went to work. i can hear the actuator engaging when I switch back and forth from 2 to Auto to 4 so im not sure 😅 😕 🤔 🙏🏻