 The first GM SUV platform not derived from pickup trucks, GMT360 retained body-on-frame construction with fully boxed hydroformed frame rails, A 113-inch wheelbase was used, with GMT 370 released as a long-wheelbase variant (using a 129-inch wheelbase).Rear-wheel drive was standard, with part-time four-wheel drive and all-wheel drive as options.The platform used double wishbone independent suspension in front, with a 5-link solid rear axle; auto-leveling air suspension was offered as an option for some versions.