'15 Chevy Silverado and GMC Sierra Heavy Duty Pickups'15 Chevy Silverado and GMC Sierra Heavy Duty Pickups

Tweaks to the underpinnings of the pickups raise maximum payload to an industry-best 7,374 lbs. (3,212 kg) from 7,222 lbs. (3,146 kg) on the ’14 models. Maximum conventional towing power grows to 19,600 (8,538 kg) and 18,000 lbs. (7,841 kg). (See related story: '15 Chevy Silverado, GMC Sierra HDs Extend GM's Truck Makeover.)