Onyx Black 2021 GMC Sierra 1500 AT4 CARFAX One-Owner. Clean CARFAX.Priced below KBB Fair Purchase Price! GMC 4D Crew Cab Sierra 1500 AT4 4WD 10-Speed Automatic EcoTec3 6.2L V8 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.Recent Arrival!Hill Buick GMC is the premier suburban Philadelphia luxury dealer. We have been family owned and operated for over 30 years and continuously service thousands of completely satisfied customers. We are very well known for our high level of customer service and our primary goal is complete satisfaction. We want your experience at Hill Buick GMC to exceed your expectations every time. Think of Hill Buick GMC for all of your needs from sales and finance to the Buick GMC service you have trusted for years.Call 610.886.1200 to schedule your test drive today!