Founded in 1939, Peterbilt Motors Company is one of the leading truck manufacturers in the United States. The company operates various aftermarket support programs to provide repair and maintenance services. Its products are available under the 367, 387, 384, 388 and 389 models. Peterbilt Motors Company provides medium-duty, vocational and hybrid trucks. The company has several locations in Tennessee, Texas, Pennsylvania, Illinois and California, as well as Canada. It provides various parts, as well as customer support and breakdown assistance services under the TruckCare brand. Peterbilt Motors Company is a part of PACCAR, which designs and manufactures light- and heavy-duty trucks.