George T. Nguyen has been appointed vp-general manager of Eaton Corp.'s Heavy Duty Transmission Div., and Kenneth F. Davis becomes vp-general manager of the Clutch Div.
Hayes Lemmerz International has announced several senior executive appointments and reorganized its North American Wheels operations into a single strategic business unit. James Stegemiller becomes president of the new North American Wheels Business Unit. Scott T. Harrison was named president of the Suspension Components Business Unit. Fred Bentley was appointed president of the Commercial Highway and Aftermarket Services Div., and Michael C. McGrath becomes vp-industry relations.
Dana Corp.'s Commercial Vehicle Systems announced the promotion of Vicky Black to the position of general manager, Commercial Vehicle Service Parts Div.
Alcoa Wheel and Forged Products has named Robert W. Sitzwohl vp and general manager, Commercial Vehicle Wheels.
Kenneth Michel has been named chief information officer of the Allison Transmission Div. of General Motors.
Wabash National has named Christopher A. Black to vp-treasurer; Arthur R. Brown to senior vp-chief operating officer; Rodney P. Ehrlich to senior vp-product development; Lawrence J. Gross to senior vp-marketing; Mark R. Holden to senior vp-chief financial officer; and Derek L. Nagle to senior vp of the company.
Landstar System has appointed Dennis Patrick Owen to the position of vp, general counsel and assistant secretary.
Transport Corporation of America has named Michael J. Paxton president and CEO.