Two Pickups with more similarities, such as the body structure, starting price, ground shadow size, height, and maximum occupancy, than differences, like the horsepower and fuel economy. And finally, the 2017 Toyota Tundra CrewMax Cab has a more powerful engine than the 2017 GMC Sierra 1500 Crew Cab, and it gets 3 fewer miles on a gallon of fuel. Among similarities are the body structure, starting price, ground shadow size, height, and maximum occupancy.