One problem related to transmission slip out of gear has been reported for the 2017 GMC Sierra. The most recently reported issues are listed below.
The contact owns a 2017 GMC Sierra. While driving approximately 5 mph, the vehicle failed to shift out of gear and there was a delay of three to four seconds before shifting into second gear. The failure recurred every morning. The vehicle was taken to the dealer (jim causley, located at 38111 gratiot Ave, clinton township, mi 48036) where it was confirmed that gm was aware of the issue. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that there was no recall on his VIN. No further assistance was offered. The approximate failure mileage was 4,500.