Westborough Buick GMC 150 Turnpike Rd, Westborough, MA01581 Westborough Buick GMC sells a variety of cars, trucks and SUVs. Some of the models it sells include the Arcadia,…More Enclave, Yukon and Regal. It has a service and finance department on site. The sales department is open seven days a week. Westborough Buick GMC sells new and used vehicles.