Gmc Sierra problems by year

2021–2024

6.2L V8 engine knock or failure (L87) 2021–2024 GMC Sierra

2020–2022

10-speed harsh shifts or momentary rear-wheel lockup (diesel) 2020–2022 GMC Sierra

2015–2019

8-speed transmission shudder (torque converter) 2015–2019 GMC Sierra