Sewell is honored to serve as your Dallas Buick GMC new car auto dealer. In 1986, Sewell Oldsmobile opened its doors in Oak Cliff. In 1994, the dealership moved to the Love Field area and added Pontiac and GMC. After General Motors discontinued the Oldsmobile line, the store added Buick in 2006 and became Sewell Buick Pontiac GMC. Sewell Buick GMC has been a perennial winner of the GM Mark of Excellence Award and received the GMC Dealer of the Year award in 2014, recognizing superior performance in service, customer satisfaction, and sales.