Automatic transmission failure and hard shifting
POWER TRAIN
47 NHTSA complaints · 2018-05 → 2026-04
“The 2017 GMC Yukon has serious transmission issues that GM continues to ignore, and it is going to get someone hurt. I was stopped at a red light, and when it turned green, I pressed the gas pedal but the car would not move”
“The 8-speed automatic transmission (Hydra-Matic 8L90) on this 2017 GMC Yukon SLT 5.3L V8 has failed. This is a repeat failure — the transmission was previously rebuilt in 2020 under a GM recall/service action for the same known defect affecting this transmission type”
“BEGINNING AROUND 56,000 MILES THE TRANSMISSION STARTED LURCHING AND STUTTERING AT SLOW SPEEDS. IT IS WORSE WHEN COLD BUT NEVER QUITE GOES AWAY”