C4500 Topkick 2 C5500 Topkick 1 C6500 Topkick 1 C7500 Topkick 1 C8500 Topkick 1 Envoy 6 Jimmy 6 Motorhome Chassis 2 Safari 8 Savana 1500 9 Savana 2500 10 Savana 3500 11 Sierra 1500 12 Sierra 1500 HD 10 Sierra 2500 9 Sierra 2500 HD 13 Sierra 3500 12 Sierra Denali 10 Sonoma 8 W3500 Forward 5 W4500 Forward 5 W5500 Forward 3 Yukon 10 Yukon Denali 9 Yukon Denali XL 9 Yukon XL 1500 9 Yukon XL 2500 9