Well for one, it would be a GMC
It depends on where you live in the states. Everywhere you buy a car or truck in Canada a heating system and block heater are standard equipment, which you obviously wouldn't need in a place such as California, and A/C is almost always an option. Sometimes undercarriage components also vary from region to region. Other than the Metric vs Imperial differences, all others will be based on the weather that the region specific to the vehicle you are buying experiences.