Sinclair Buick GMC is a St Louis dealer with a large selection of new and used cars. We serve the cities of Wentzville, O'Fallon, Belleville, St Charles, St Peters, St Louis, Columbia IL, O'Fallon and Sunset Hills.  

We have a collision center and a parts and service department on site. The Dave Sinclair Buick, GMC Body Shop is equipped with state-of-the- art equipment and staffed by certified GM technicians who will restore your GM car, truck, van or SUV to like new condition. We provide free insurance estimates and offer a lifetime warranty on our workmanship.

Our inventory of cars include the Buick La Crosse, Regal, Lucerne and Regal. Our GMC cars include the Acadia, Sierra, Terrain and Yukon.  Our Saint Louis GMC and Buick dealership invites you to stop by and visit us at 5655 S. Dave Sinclair Blvd., St. Louis, MO 63123