From what I read on the net Chevy had no issues. I think that maybe the 5th gear nut issue was caused by the Cummins harmonics which caused the nut to back off. One sharp guy asked why didn't they simply put reverse threads on the shaft which would cause the nut to tighten?

2021 Dodge 2500 4WD Cummins
2020 Challenger R/T Scat Widebody
2007 Charger R/T 5.7