Welcome to Dean Patterson Chevrolet Cadillac Mazda Hyundai Online. For over 30 years, we have provided Altoona, Blair County, and the surrounding areas with exceptional sales and service. From you first test drive through your routine maintanence to your next vehicle purchase, it is our goal to become YOUR DEALER for LIFE! Please select the make you are interested in to receive detailed information, schedule a service appointment, request a price quote, apply for easy credit, or just look around. We look forward to serving YOU!!!