A two-wheel-drive two-door Yukon becomes available. A new 5700 Vortec V8 gets long-life coolant and spark plugs, as well as a hefty bump in power and torque. Passenger car tires on less stout Yukons result in a softer, quieter ride. Rear heat ducts, illuminated entry, and height-adjustable seatbelts debut. Four-wheel-drive models get an optional electronic shift mechanism.