Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2018 Dodge Grand Caravan SXT Odometer is 1870 miles below market average! Awards: * JD Power Initial Quality Study (IQS) At Patriot Buick-GMC, we have the best selection of used and GM -Certified preowned vehicles. Conveniently located at the intersection of routes 100 & 73. We are one of the best dealerships, serving Allentown, Reading and Pottstown.