{"type":"vehicle","@type":"Vehicle","identifier":"1GTU9EET0MZ182260","name":"2021 GMC Sierra 1500 AT4","vin":"1GTU9EET0MZ182260","url":"https://opendealer.shop/mccarthy-chevrolet-lees-summit-lees-summit-mo/2021-gmc-sierra-1500-at4-1gtu9eet0mz182260","vehicleDetailsUrl":"https://autos.lotlinx.com/?ad=1GTU9EET0MZ182260&pdate=202608281104&request=AdLink&pubId=280000&url=1&utm_source=opendealer&utm_medium=referral&utm_campaign=ai-traffic","detailsUrl":"https://autos.lotlinx.com/?ad=1GTU9EET0MZ182260&pdate=202608281104&request=AdLink&pubId=280000&url=1&utm_source=opendealer&utm_medium=referral&utm_campaign=ai-traffic","dealerWebsite":null,"primaryImage":"https://imgcdn.lotlinx.com/vdn/81156/gmc_sierra%201500_2021_1GTU9EET0MZ182260_81156_2749951456.jpg?ver=20260819","thumbnailUrl":"https://imgcdn.lotlinx.com/vdn/81156/gmc_sierra%201500_2021_1GTU9EET0MZ182260_81156_2749951456.jpg?ver=20260819","make":"GMC","model":"Sierra 1500","vehicleModelDate":2021,"modelCode":null,"trimLevel":"AT4","bodyType":"Truck","numberOfDoors":"4","color":"Satin Steel Metallic","vehicleInteriorColor":"Jet Black","colorCode":null,"interiorColorCode":null,"vehicleTransmission":"Automatic","driveWheelConfiguration":"4WD","vehicleEngine":{"name":"3L 6-cyl","engineDisplacement":"3L"},"fuelType":"Gasoline","fuelEconomy":{"city":16,"highway":21},"vehicleCondition":"Used","certified":"false","mileageFromOdometer":58059,"offers":{"@type":"Offer","price":41500,"priceCurrency":"USD","availability":"https://schema.org/InStock","url":"https://opendealer.shop/mccarthy-chevrolet-lees-summit-lees-summit-mo/2021-gmc-sierra-1500-at4-1gtu9eet0mz182260","priceSpecification":{"msrp":null,"internetPrice":41500,"priceChange":null}},"description":"Meet this 2021 GMC Sierra 1500 AT4 a capable truck that delivers both refined comfort and practical capability. With just over 58000 miles this gray crew cab stands ready to handle your work and weekend adventures with confidence and style.
- 3.0L Duramax I-6 Diesel Turbocharged engine with 277 hp and 460 lb-ft of torque
- AT4 CarbonPro Edition with carbon composite bed and unique grille surround
- Premium GMC Infotainment System with navigation and SiriusXM 360L
- MultiPro Audio System by Kicker with premium sound quality
- Power sunroof for open-air driving
- Heated and ventilated leather front seats with 10-way power adjustment
- AT4 Premium Package with premium tires and high clearance step
- Integrated Trailering System with hitch guidance and trailer brake controller
- Advanced safety features including lane change alert and rear cross traffic alert
- 4G LTE Wi-Fi hotspot and wireless charging capability
- All-terrain performance with 4WD and off-road suspension
- Spray-on bed liner with AT4 logo
This Sierra AT4 balances capability with contemporary convenience. The 3.0L diesel engine delivers strong torque for towing and hauling while achieving 22 city and 26 highway miles per gallon. Inside you'll find premium leather appointments heated steering wheel and comprehensive technology integration. The crew cab layout provides comfortable seating for five with split-folding rear seats for flexible cargo management.
The CarbonPro bed represents GMC's commitment to durability and modern materials. This lightweight composite design resists denting and corrosion while maintaining the strength needed for genuine truck duty. Combined with the Trailering Package you have everything needed for serious towing and hauling operations.
Exterior features enhance both aesthetics and function. The unique AT4 grille surround with black chrome finish carbon hard badge and black dual exhaust tips create a distinctive appearance. The high clearance step makes entry and","additionalProperty":[],"image":[{"@type":"ImageObject","url":"https://imgcdn.lotlinx.com/vdn/81156/gmc_sierra%201500_2021_1GTU9EET0MZ182260_81156_2749951456.jpg?ver=20260819","description":"2021 GMC Sierra 1500 - Primary exterior view","representativeOfPage":true}],"seller":{"@type":"AutoDealer","name":"Mccarthy Chevrolet Lee's Summit","slug":"mccarthy-chevrolet-lees-summit-lees-summit-mo","telephone":null,"url":null,"address":{"@type":"PostalAddress","postalCode":"64081","addressRegion":"MO","streetAddress":"945 SE Oldham Pkwy","addressCountry":"US","addressLocality":"Lee's Summit"},"latitude":"38.9011000","longitude":"-94.3577000","dealerGroup":null,"aggregateRating":{"@type":"AggregateRating","ratingValue":4.6,"reviewCount":5147,"bestRating":5,"worstRating":1}},"stockNumber":null,"slug":"2021-gmc-sierra-1500-unknown","dateCreated":"2026-08-27T10:35:55.906Z","dateModified":"2026-08-29T10:35:17.046Z","safetyRating":{"source":"NHTSA","program":"5-Star Safety Ratings (NCAP)","sourceUrl":"https://www.nhtsa.gov/ratings","nhtsaVehicleId":15360,"vehicleDescription":"2021 GMC Sierra 1500 PU/RC 4WD","overall":"5","overallFront":"4","frontalDriver":"5","frontalPassenger":"4","overallSide":"5","sideDriver":"5","sidePassenger":"Not Rated","sidePole":"5","rollover":"4","rolloverPossibility":0.198,"adas":{"electronicStabilityControl":"Standard","forwardCollisionWarning":"Optional","laneDepartureWarning":"No"},"fetchedAt":"2026-07-30T06:03:01.302Z"},"recallSummary":{"source":"NHTSA","scope":"year_make_model","openRecallCount":7,"hasOpenRecalls":true,"hasParkIt":false,"hasParkOutside":false,"fetchedAt":"2026-08-24T12:00:57.309Z"},"referenceSpecs":{"source":"manufacturer_reference","trimName":"AT4","description":"AT4 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 10A)","msrp":54700,"engineType":"gas","fuelType":"regular unleaded","cylinders":"V8","engineSizeL":5.3,"horsepowerHp":355,"torqueFtLbs":383,"transmission":"10-speed shiftable automatic","driveType":"four wheel drive","bodyType":"Truck (Crew Cab)","doors":4,"seats":5,"lengthIn":231.7,"widthIn":81.2,"heightIn":78.4,"wheelbaseIn":147.4,"groundClearanceIn":10.9,"cargoCapacityCuFt":null,"maxCargoCapacityCuFt":null,"maxTowingLbs":9200,"maxPayloadLbs":2080,"curbWeightLbs":5140,"fuelTankCapacityGal":24,"combinedMpg":18,"cityMpg":16,"highwayMpg":21,"combinedMpge":null,"electricRangeMi":null,"batteryCapacityKwh":null,"chargeTime240vHr":null},"inventoryStatus":"on_lot","estimatedArrival":null,"_raw":{"lot_date":"2026-08-19"},"isFeatured":false,"internetprice":41500,"msrp":null}