Peterbilt Motors Company, headquartered in Denton, Texas, manufactures trucks for over-the-road, construction, municipal and medium-duty markets. Founded in 1939, the company offers a range of truck models that includes the Class 5 325, Class 6 330, Class 6 210, Class 7 335 and Class 7 220. It also provides an array of TruckCare aftermarket support programs that includes preventive maintenance plans, expedited QuickCare services, automated parts inventory replenishment and round-the-clock customer assistance. Peterbilt Motors Company was the highest-ranked manufacturer in the J.D. Power and Associates 2007 medium-duty truck customer satisfaction study. The company has more than 200 dealership locations in North America and is a division of PACCAR Incorporated. It maintains a dealership in De Pere, Wis.