Isuzu Ascender Wallpaper, pictures, images and photos. The Isuzu Ascender is a mid-size/full-size SUV from Isuzu. Introduced for 2003, the 7-passenger Ascender is a re-badged GMC Envoy. It replaced the Japanese built mid-size Isuzu Trooper. A shorter 5-passenger model was made available for the 2005 model year as a replacement for the Rodeo and the Axiom. A Displacement on Demand V8 was used for