Established in 1972, Mike Hellack Chevrolet is a car dealership that offers a range of new and pre-owned inventory of vehicles. The dealership provides vans, cars, trucks and sport utility vehicles. It sells several models of Chevrolet, including the Aveo, Cobalt, Colorado, Equinox and Avalanche. Mike Hellack Chevrolet offers pre-owned vehicles from various makes, such as Buick and Pontiac. The dealership maintains a service department that provides brake inspection, oil change, wheel alignment, tire rotation and air conditioning services. Its parts department stocks a variety of vehicle accessories and parts. In addition, Williams Chevrolet Pontiac offers financial assistance through certified third-party lending institutions.. Service And Parts For Most Vehicles