WElcome to the site!! As for the trucks there are no real problem years, the earlt 01 02's had some injector issues with a % fo trucks. ANy truck can have issues but there really arent any that are just a given problem in all trucks!!
the engines are mostly the difference but for someone not looking to make a race truck the differences are small! the lb7 04.5 and older seem to get the best mpg stock!
the engines are mostly the difference but for someone not looking to make a race truck the differences are small! the lb7 04.5 and older seem to get the best mpg stock!