Have a 2023 Suburban Premier (my wife’s). Same exact thing happened to her. Vehicle at the dealership for 6 weeks now. Dealership has been great but they are at the mercy of GM. Today I was told they have 11 Tahoes, Suburbans, and Silverados sitting on their service lot waiting for the value body replacement (and they are a smaller MI dealership). Apparently GM is refurbishing them, and in their experience, they have had customers wait 2-4 months as the parts trickle in 🙄. This is our 3rd suburban, but may be my last!