Two problems related to transmission not go into gear have been reported for the 2016 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2016 GMC Sierra 1500 based on all problems reported for the 2016 Sierra 1500.
Transmission has failed from 4th gear up (3) times within 91,000 miles. When going at speeds more than 50 miles an hour, the transmission will break and lose forward motion causing a safety issue with oncoming traffic. The transmission was "rebuilt" at lafontaine GMC of highland, mi (2) times and they are telling me they are going to "rebuild" it a 3rd time. Just wanted to note safety issue so when this happens in the future I will have a legal avenue.
Transmission changes hard when it shifts to another gear when I purchase the truck new I contact GMC they said that it was design to shift like that everyone that I know has a Sierra 1500 complains about how hard their truck shifts I have relatives and friends complains also. When it was under waranty they told me that the wrong tramsmission fluid was put in it from the factory ? my truck brand new.