I had almost the exact same experience on my Gen 1 Cruze (except they gave me a Cadillac SUV as a loaner, and they kept my car for 2 days because they were so busy). I guess sometimes they don't get the sealant right in the factory. But, that's what the warranty is for. It's good you found a good dealer. Those are worth almost as much as the warranty.
BTW, they would have had to replace the oil when they fixed the oil pan anyway, so it was lucky for GM that you also needed your first oil and filter change.
BTW, they would have had to replace the oil when they fixed the oil pan anyway, so it was lucky for GM that you also needed your first oil and filter change.