2023 Chevy Silverado 3500HD 31k miles. We're told it's the valve body and the part is on National back order. Truck has been at Dealership for 2 months. Dealer has no idea when our truck will be fixed. We just purchased a new camper in July and can't even use it. We have a truck we can't use but still have to make payments. We have a camper we can't use but still have to make payments. We had to rent a truck for our last camping trip, which is not cheap. We had to cancel a camping race trip to SD, out that $$$. All this money were currently out. GM will only give us a small car as a loaner but that doesn't tow our new 45ft toy hauler. I'm sick that we're out all of this money because of what sounds like a faulty part? This is not good.