Buyers of the Chevrolet Colorado LT or 2007 GMC Canyon SLE will need to choose a specific trim (the two-wheel-drive Canyon regular cab, for instance, is available in SLE1, SLE2, and SLE3 trim levels). All versions get upgraded seat cloth and interior trim treatments, as well as improved sound quality and a standard CD player. The higher trims add items such as a sliding rear window; power mirrors, door locks, and windows; a leather-wrapped steering wheel; and an auto-dimming interior mirror with an exterior temperature gauge and compass. OnStar and various convenience packages are optional.