Hey all, new to the forums.
I just bought an 07 Silverado ltz from the dealership about a month ago and have some concerns and questions that they can't answer for me.
#1. The truck has 163k miles but only 859 engine hours.
Possible that it was pulled behind a camper or something of that nature?
#2 and most important-
The fuel economy switch which is part of the dic doesn't do anything when I push it. The rest of the dic buttons work just fine. Can't find any settings to turn it on or anything. Any ideas what could be wrong? It's a feature I really really would like to have

Thanks much!
Jacob