Diamond Auto Group – New and Used Chevrolet, GMC, Buick and Cadillac Dealer in the Worcester AreaWelcome to Diamond Auto Group’s website, where you can browse our entire inventory of new Chevrolet, GMC, Buick and Cadillac vehicles and used cars at our Worcester region dealership. Come visit us to test drive a vehicle, speak to one of our experts, or discuss financing options. You can also call us at our number above. Diamond Auto Group provides quality vehicles from Chevrolet, GMC, Buick and Cadillac to the Framingham, Charlton and Auburn area. Our large selection ensures that we have a vehicle for everyone, no matter what it is you’re looking for.