Why Buy from Alpine Buick GMC? When you choose this 2020 GMC Sierra 2500HD AT4 from Alpine Buick GMC, youre not just buying a used car youre investing in quality, reliability, and peace of mind. Located in Littleton,CO, were proud to offer the best selection of top-tier used cars in our local area. Heres why savvy buyers trust us: Transparent Pricing: At , what you see is what you pay. Certified Quality: Every vehicle, like this 2020 GMC Sierra 2500HD AT4, undergoes a rigorous multi-point inspection to ensure it meets our high standards. Customer-First Service: Our award-winning team treats you like family, backed by an excellent customer satisfaction rating. OTHER NOTABLE FEATURES AND OPTIONS YOU SHOULD KNOW ABOUT: Driver Alert Package IPerimeter LightingUltrasonic Front and Rear Park AssistRear Cross Traffic AlertLane Change Alert with Side Blind Zone AlertDriver Alert Package II ($645 value)Safety Alert SeatIntelliBeam Automatic High Beam On/offFollowing Distance IndicatorForward Collision AlertLane Departure WarningAutomatic Emergency BrakingAT4 Premium Package ($2,715 value)20" 6-Spoke Bright Machined Aluminum WheelsTechnology Package ($2,125 value)Rear Camera Mirror8" Multicolor Driver Instrument Info DisplayMulticolor 15" Diagonal Head-Up DisplayBed View CameraHD Surround Vision with 2 Trailer View Camera ProvisionsPreferred Equipment Group 4SB1st and 2nd Rows All-Weather Floor LinersPower Front Passenger Windows with Express Up/downPower Rear Windows with Express DownDeep-Tinted GlassKeyless Open and StartPower Door LocksPower Windows with Driver Express Up/downRear Wheelhouse LinersRemote Vehicle Starter SystemElectric Rear-Window DefoggerSpray-On Pickup Box Bed Liner with AT4 LogoCompass Located in Instrument ClusterFloor-Mounted Center ConsolePainted Black Surround GrilleIntegrated Trailer Brake ControllerHeated Driver and Front Outboard Passenger SeatsHeated 2nd Row Outboard Seats120-Volt Bed Mounted Power Outlet120-Volt Instrument Panel Power Outlet12-Volt Rear Auxiliary Power OutletHeated and Ventilated Front Bucket Seats2 USB Ports2 USB Ports (1st Row)Electrical Lock Control Steering ColumnManual Tilt-Wheel/telescoping Steering Column2-Speed Active Transfer CaseProGrade Trailering System4.2" Diagonal Color Display Driver Info CenterOnStar and GMC Connected Services CapableLED Cargo Area LightingRed Recovery HooksSteering Wheel Audio Controls2nd Row Dual USB Charge-Only PortsUnauthorized Entry Theft-Deterrent SystemHD Rear Vision CameraX31 Off-Road PackageGooseneck/5th Wheel Package ($545 value)Gooseneck/5th Wheel Prep PackageAT4 Preferred PackagePower Sliding Rear Window with DefoggerPremium GMC Infotainment System Radio with NavigationWireless ChargingLED Smoked Amber Roof Marker LampsUniversal Home RemoteBose Premium 7 Speaker Sound System Convenience Cruise control maintains a preset vehicle speed; automatically increasing or decreasing throttle to maintain that speed.Safety and Security The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision. The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display. A head-up display projects gauge (speed, RPM, etc.) information onto the inside of the windshield just below the driver's line of sight. Brake assist senses panic braking from the speed of the brake pedal's travel and applies all available power brake boost.Technology and Telematics Without the need for a manufacturer specific app to be installed on the smart device, the vehicle infotainment system can access and control functions of a smart device physically plugged-into the vehicle. Mobile devices can wirelessly connect to the internet through the vehicle's private mobile network. At Alpine Buick GMC, were here to Serve you! Our staff is 100% dedicated to customer satisfaction and we understand that you need clear, transparent information throughout the car buying process. Wit