Acadia 2 C4500 Topkick 1 C5500 Topkick 1 C6500 Topkick 1 C7500 Topkick 1 C8500 Topkick 1 Canyon 1 Envoy 4 Savana 1500 5 Savana 2500 5 Savana 3500 6 Sierra 1500 7 Sierra 1500 HD 3 Sierra 2500 HD 5 Sierra 3500 3 Sierra 3500 HD 3 Sierra Denali 9 W3500 Forward 1 W4500 Forward 2 W5500 Forward 1 W5500HD Forward 1 Yukon 8 Yukon XL 1500 7 Yukon XL 2500 6 W4500 1