Why Buy from Alpine Buick GMC? When you choose this 2021 GMC Sierra 1500 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 $40,681, what you see is what you pay. Certified Quality: Every vehicle, like this 2021 GMC Sierra 1500 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 AlertAT4 Value Package ($2,105 value)LT275/65R18C MT BW TiresDriver Alert Package II ($1,095 value)Safety Alert SeatAdaptive Cruise ControlIntelliBeam Automatic High Beam On/offFollowing Distance IndicatorForward Collision AlertLane Keep Assist with Lane Departure WarningAutomatic Emergency BrakingFront Pedestrian BrakingPreferred Equipment Group 4SBGMC Connected Access CapablePower Front Passenger Windows with Express Up/downPower Rear Windows with Express DownDeep-Tinted GlassKeyless Open and StartPower Door LocksPower Front Windows with Driver Express Up/downRear Wheelhouse LinersColor-Keyed Carpeting Floor CoveringFront Premium Floor Liners with Removable Carpet InsertRemote Vehicle Starter SystemElectric Rear-Window DefoggerSpray-On Pickup Bed Liner with AT4 LogoCompassFloor-Mounted Center ConsoleAuto-Locking Rear DifferentialBody-Color Surround GrilleHill Descent ControlIntegrated Trailer Brake ControllerHeavy-Duty Air FilterHeated Driver and Front Outboard Passenger Seating120-Volt Instrument Panel Power OutletAuxiliary External Transmission Oil Cooler12-Volt Rear Auxiliary Power OutletVentilated Driver and Front Passenger Seats170 Amp Alternator2 USB Ports2 USB Ports (1st Row)Electrical Lock Control Steering ColumnManual Tilt-Wheel and Telescoping Steering Column2-Speed Transfer CaseSkid PlatesProGrade Trailering System18" X 8.5" Machined Aluminum Wheels4.2" Diagonal Color Display Driver Info CenterOnStar and GMC Connected Services CapableLED Cargo Area LightingRed Recovery HooksSteering Wheel Audio ControlsRear Dual USB Charging-Only PortsTheft Deterrent System (unauthorized Entry)HD Rear Vision Camera4G LTE Wi-Fi Hotspot CapableOff-Road SuspensionTrailering PackageOff-Road Performance Package ($2,570 value)LT275/65R18C MT BW Tires18" X 8.5" Machined Aluminum WheelsTechnology Package ($2,075 value)Rear Camera Mirror8" Driver Information CenterMulticolor 15" Diagonal Head-Up DisplayBed View CameraHD Surround Vision with 2 Trailer View Camera ProvisionsPerformance Upgrade PackagePerformance Air Intake SystemCat-Back Performance ExhaustAT4 Preferred PackagePower Sliding Rear Window with Rear DefoggerPremium GMC Infotainment System Radio with NavigationWireless ChargingUniversal Home RemotePremium Bose 7-Speaker Sound System EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, 6.2L ECOTEC3 V8, TRANSMISSION, 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED, GVWR, 7000 LBS. (3175 KG), REAR AXLE, 3.23 RATIO, WHEELS, 18" X 8.5" (45.7 CM X 21.6 CM) MACHINED ALUMINUM, TIRES, LT275/65R18C MT BLACKWALL GOODYEAR WRANGLER DURATRAC, TIRE, SPARE 265/70R17SL ALL-SEASON, BLACKWALL, DARK SKY METALLIC, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHER FRONT SEAT TRIM, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN, INCLUDES MULTI-TOUCH DISPLAY, AM/FM STEREO, AT4 VALUE PACKAGE, OFF-ROAD PERFORMANCE PACKAGE, LPO, PERFORMANCE UPGRADE PACKAGE, TECHNOLOGY PACKAGE, AT4 PREFERRED PACKAGE, DRIVER ALERT PACKAGE II, DRIVER ALERT PACKAGE I, LPO, PERFORMANCE AIR INTAKE SYSTEM, LPO, CAT-BACK PERFORMANCE EXHAUST, SUNROOF, POWER, INTELLIBEAM,