I just found drops on the bell housing inspection port and nearby on the front of the transmission casting. I have ~2,200 miles on this 2025 DENALI HD 2500 (Duramax/10spd). I have a friend who bought his GMC 2500 AT4 within a week of mine. He has 2,700 miles. Same issue. I’ve had 7 diesel trucks since 2007, 5 power strokes, a 2012 DENALI HD and this 2025 DENALI Ultimate HD. I have “0” tolerance for this kind of thing. I paid over $100K cash for this truck in March. I’ll drop it like third period French if it is any kind of issue. I have the patience of a gnat.