GMC's Sierra Denali will become the first full-sized pickup with four-wheel steering when it goes into production in October.
The launch also will mark the expansion of GMC's upscale Denali designation - previously used only on the Yukon - to the former Sierra C3. Like the C3, the Denali is a half-ton, extended-cab pickup.
GMC showed the Denali, which will feature Delphi Automotive System Corp.'s Quadrasteer system, at a press event in mid-June. The feature offers increased trailer-hauling capacity and tighter turns, according to GMC.
GMC officials said the price is not set for Quadrasteer, which will be an option. The Quadrasteer technology will move to other General Motors trucks, GM officials said.
GMC revealed several other product variations:
An Envoy with a Midgate, which allows seating areas to be used for cargo, is expected for model year 2004, division officials said. The Midgate allows the rear cab wall and seats to fold flat for cargo. It also will be seen on the Cadillac Escalade EXT, due early next year.
GMC will roll out other Envoy options and variations, including a back-seat DVD player, this fall. That will be followed in February by an extended version with a third seat, priced about $2,500 over standard Envoys.
A 2004 Sierra will feature GM's parallel hybrid system. In this system, the electric motor does not power the vehicle but takes the load off the gasoline engine by powering accessories when an integrated starter-alternator shuts the motor off during stops. The device enables the truck to achieve fuel savings of up to 15 percent, the company says.
The 2002 Sierra Professional will be built on 1500 and 2500 pickups offering the 4.8-liter, 5.3-liter and 6.0-liter V-8s, with two- and four-wheel drive options.
GM's cylinder deactivation will debut for the 2004 model year on larger V-8 engines.
For model year 2002, Yukon models powered by the 285-hp, 5.3-liter V-8 engine will run on any combination of gasoline and ethanol.