I didn't find anyone else with this problem, but my father in-law has an 06 LLY, and it just recently started to overheat when pulling his camper. Only on hill climb. He has pulled it all the way to Mississippi from Maryland and didn't have any problems til he got back to Maryland, but without load its fine, and on level pull its fine. Only on incline it just starts to heat up pretty quick. Anyone else seen anything similar. I told him to throw an aftermarket intake on it just for S&G because it wouldn't hurt, but not sure if that will fix it like the 04-05 LLY's. His cooling system seems fine, and I believe the truck only has around 48k miles.