For the past two week I randomly get this message on the dash. No dummy lights or anything just this message when I start the truck. The truck won't switch out of auto either since this started. I tried 2wd nothing and 4H and 4L it's the same thing.
I have 8,000 miles on this 2015 Sierra Z71 1500.
When I took it to the dealer it didn't happen for them and told me they couldn't do anything about it so they sent me home. I left I wasn't going to argue, I hate that dealership. Maybe I should try a Chevy dealer.
Has anyone else had an issue like this?