DETROIT (Jan. 13)—Electric-assist, the interim step between fully hydraulic and fully electric steering systems, are taking root in North America. Dana Corp. and Delphi Corp. will supply their electric-assist power steering systems for 2004 model-year vehicles. Delphi's first contract for its E*Steer electric power steering system is for the 2004 Chevrolet Malibu. Dana will supply its Electro-Hydraulic Power Steering module for the 204 GMC Sierra and Chevrolet Silverado hybrid pickup trucks. The systems replace the conventional, engine-driven hydraulic power steering pump and related pullies and belts. By assisting only on demand, Dana's can produce fuel savings of up to 3 percent, while Delphi said its E*Steer helps to improve fuel economy by up to 4 percent over conventional, hydraulic systems.