C4500 Topkick 2 C5500 Topkick 2 C6500 Topkick 2 C7500 Topkick 2 C8500 Topkick 2 Canyon 2 Envoy 5 Motorhome Chassis 2 Savana 1500 7 Savana 2500 8 Savana 3500 9 Sierra 1500 8 Sierra 1500 HD 5 Sierra 2500 HD 10 Sierra 3500 10 Sierra Denali 4 Yukon 6 Yukon Denali 6 Yukon Denali XL 5 Yukon XL 1500 4 Yukon XL 2500 5