are the 07 crew cab chevys suppose to have express down windows on both front doors my manual says it does but only drivers side is express also manual says it has to be taken into dealer for trailer lights plug to be hooked up under hood. i dont want to mess something up on new truck i have always wired my own lights as to windows i really dont want to have to mess with waranty right off the bat. i dont care about express pass side but i dont want it to mess something else up later you know maybe those windows come both ways the manual covers so many different models says your truck may have this or may not have that hard to tell whats what for me anyway we used to get manual that was just for the truck you had anyway thanks for any help or ideas great truck though i have a lot of chevy trucks by the way this is a z71 off road package 2 wheel drive if that helps on questions