2024 2500 duramax... same problem. Severely disappointed.
Dealer say must replace seals in bellhousing. 3+ days labor and the transmission must be removed.
I noticed this at 15k miles, but I think it's probably been there since it was new 1.5 years ago. There are no drip spots in my driveway...I think it's only leaking under pressure while on the road under load. When it was brand new, I had a few memorable rough shifts while accelerating (not towing) of 'wtf was that,' but nothing since then.
This truck is dead to me now and I am sadly/angrly making plans to get rid of it...I had plenty of vehicles and ALWAYS when stuff like this happens and gets repaired, it's a cascade of other problems. I don't care what any sales or service manager tries to tell me...personal experience multiple times.
GM really let me down (again). My first car was 1991 sonoma and later I had a 1999 S10. Both had powertrain problems with age and I told myself I'd never get a GM product, but here I am 20+ years later thinking perhaps times have changed...no they haven't.
