DESC: When considering the purchase of a 2007 GMC Sierra 3500 Classic, it's important to keep in mind what the eventual resale value will be. This can be ascertained from looking at the selling price of prior year versions of the 2007 GMC Sierra 3500 Classic, if it's not a brand new model. Keep in mind that resale value is dependent on the condition of the automobile when it is sold, as well as optional equipment and the total number of miles accumulated