http://www.preferredbuickgmc.com/ (616) 604-4260 Mechanically identical to the Cadillac Platinum Hybrid - the top-end model of the Escalade lineup - as well as the standard Yukon Hybrid, the Yukon Denali Hybrid receives the automaker's 6.0-liter V8 with Active Fuel Management cylinder shut-off and two electric motors packaged in the transmission capable of powering the SUV's electronics at stop and at low speeds. The Hybrid features a CVT rather than a traditional transmission.