Besides stocking General Motors s full-line of light and medium-duty trucks, Beyer Bros provides sales, service and parts for Volvo trucks, Autocar, Detroit Diesel, Cummins Engines, Caterpillar Engines and Isuzu medium size trucks. It also stocks parts for all GM lines, including Chevrolet trucks, and has more than 40,000 genuine GM parts in its stock. Beyer Bros facility has 12 service bays and provides towing and road service as well. It is also a dealer of used trucks and caters to several regional and national accounts for their parts needs. Beyer Bros, based in Fairview, N.J., has been in the truck business since 1914.