It turns out that my oil filter was leaking. I usually do my own oil changes but the first one was included so I let the dealer do it. They told me that there was a small hole in the oil filter. I asked how that happened and they said it was over torgued. How does that happen with an oil...
I have a 2021 GMC Denali with the 3.0L and having it towed to dealer today. I think the seal is blown with 11k miles. Barely made it home and oil everywhere under truck. No oil on dipstick. I will post what they say.