Derek Smay

My 2025 2500HD had same issue. They tried re-seal, and it leaked worse. GM authorized a new transmission, and all is well for now.

Crawled under this morning and it’s all around the pan not sure if they would have dropped pan or not. There was very little inside bell housing that I could feel so that may have been from before repair.

Thanks for suggestion I’ll give it a try. It’s going back to dealership Monday. It’s dripping pretty good I wiped driveway clean yesterday and here pic from today

Anyone else having issue with their 2025 2500 HD leaking around the inspection cover? This is my first Chevy truck, and I noticed oil leaking from transmission around inspection cover in bell housing. The dealership where I purchased the truck cleaned out oil and had me drive to see if it was just residual oil. The oil leak continued and now another dealership did the reseal of front seal and whatever else was list in technical service bulletin last week. After about 50 miles truck now leaking again worse than before from same area. Truck only has 2700 miles on it and extremely disappointed after spending $75K that been into shop several times. I'm hoping GM could just send a replacement transmission hate the idea of all these repairs on a brand-new vehicle. It's going back to the dealership on Monday for them to have another look.