Have used ford trucks up to this point. Neighbor needed a bigger truck to tow his camper and atv so we swapped a f250 I wasn't using for his sierra. Using it for daily driver now. Much of it has been rebuilt, drives well. It is my first GM truck. Hoping to learn more about maintenance needs specific to this truck, things to watch for etc. It has a 5.7 in it with 200k miles on it. If there are sub forums for this model year range would like to know about them.