I purchased a 2025 GMC Siera Denali Ultimate in December 2024. Approximately 2 weeks after purchasing the vehicle, I was driving down the road I received a message that said, ‘Service Suspension’. I was able to call OnStar for diagnostic and the truck was throwing code C2A0A. I took the truck into the dealership to see what the issue was. The dealership said that I apparently ran something over and it must have flown up and broke a plastic sensor cover on the lower rear left shock. I never hit anything but have no way to prove. So, I had to pay $526 for a new shock. Even if I did run over something if that area of the shock is that sensitive it should be better protected especially if it’s not covered under warranty.