just picked up an 01 lightning for a great price. It has been well taken care of but the only down side is it has 80k miles. It runs good and shifts fine but I wanted to know what I should do maintenance wise to make sure it stays that way. Plugs wires injectors and so on. the truck has only been lowered and thats it for mods. its bone stock. I know it's a truck n not a Honda but I'm only geting 13 miles a gallon on the highway. Is that normal for a lightning? Thanks for the help in advance.