NISSAN NORTH AMERICA INC. - Scott Fessenden to director of Nissan marketing. He was director of operations for the Nissan Division.
Mark McNabb to director of operations for the Nissan Division. He was assistant regional manager for Nissan's Northeast Region.
Mark Christovale to director of public companies, a newly created position. He was corporate manager of national market representation.
PONTIAC-GMC DIVISION - Johannes Rei-fenrath, 39, to communications director. He was general director of international product communications for General Motors Europe. Reifenrath replaces Darwin Allen, who was named director of divisional communications for GM in July.
GENCORP VEHICLE SEALING - Edward Hasler to vice president of finance for the Vehicle Sealing Division. He was division controller.
Dennis Albright to director of information systems for the Vehicle Sealing Division. He was division systems manager.
John Brogowicz to vice president of human resources and administration for the Vehicle Sealing Division. He was director of human resources and administration.
GenCorp Vehicle Sealing is in Farmington Hills, Mich. It is a unit of GenCorp Inc. of Rancho Cordova, Calif.
INTERMET CORP. - Pamela Rodgers to the board. She is president of Rod- gers Chevrolet of Woodhaven, Mich. She also serves on the boards of the General Motors Minority Dealers Association and the National Association of Minority Automobile Dealers.
Intermet of Troy, Mich., supplies precision iron and aluminum cast and finished automotive components.
DETROIT DIESEL CORP. - Robert Allran to executive vice president of engineering and operations, effective January 2000. He is executive vice president of operations.
Allran will assume the engineering responsibilities of David Merrion, who will retire Dec. 31. He is executive vice president of engineering.
Detroit Diesel supplies heavy-duty diesel and alternative fuel engines, automotive diesel engines and engine-related products. It is in Detroit.