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Since 1953 our mission has remained the same ??? to provide dependable vehicles expert service and a welcoming no-pressure environment for every customer. Whether you???re searching for a new GMC truck a stylish Buick SUV or a quality pre-owned vehicle our team is here to guide you every step of the way. Why Buy from DeMontrond Buick GMC As one of Houston???s top-rated Buick and GMC dealerships DeMontrond is recognized for exceptional value service and selection. We offer Warranty Forever providing lifetime coverage on all new and most used vehicles at no additional cost. Our expansive inventory includes popular GMC models such as the Sierra Canyon Yukon Terrain and Acadia along with Buick favorites including the Encore Enclave Envision and Envista. You???ll also find a wide range of certified pre-owned cars trucks and SUVs from all makes and models. With DeMontrond Direct you can shop and buy online with fast approvals and convenient delivery options. Our Certified Service Center is staffed by GM-trained technicians who use genuine OEM parts for everything from regular maintenance to collision repairs. We also provide flexible financing through a broad network of lenders for all credit types and offer modern dealership amenities including free Wi-Fi fresh coffee a comfortable waiting area a children???s play zone loaner vehicles and rental assistance. Family-owned and operated since 1953 DeMontrond Buick GMC continues to earn the trust and loyalty of drivers across Houston Spring The Woodlands Tomball and Cypress.<br>Premium Luxury Package 1SC (Automatic Emergency Braking Bose Premium 8-Speaker Audio System Dual Driver Info Center Display Gauge Cluster Front & Rear Park Assist Inside Rear-View Auto-Dimming Mirror and Teen Driver) 2-Way Power Driver Lumbar Control Seat Adjuster 2-Way Power Passenger Lumbar Control Seat Adjuster 3.49 Axle Ratio 3rd row seats: split-bench 4-Wheel Disc Brakes 6-Pas","additionalProperty":[],"image":[{"@type":"ImageObject","url":"https://imgcdn.lotlinx.com/vdn/55240/make_model_0_1GYKPCRS4MZ174479_55240_2735873790.jpg?ver=20260703","description":"2021 Cadillac XT6 - Primary exterior view","representativeOfPage":true}],"seller":{"@type":"AutoDealer","name":"DeMontrond Buick GMC","slug":"demontrond-buick-gmc-houston-tx","telephone":null,"url":null,"address":{"@type":"PostalAddress","postalCode":"77090","addressRegion":"TX","streetAddress":"17925 I-45","addressCountry":"US","addressLocality":"Houston"},"latitude":"30.0270000","longitude":"-95.4307000","dealerGroup":null,"aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":2204,"bestRating":5,"worstRating":1}},"stockNumber":null,"slug":"2021-cadillac-xt6-unknown","dateCreated":"2026-08-01T10:34:27.113Z","dateModified":"2026-08-02T10:32:17.254Z","safetyRating":{"source":"NHTSA","program":"5-Star Safety Ratings (NCAP)","sourceUrl":"https://www.nhtsa.gov/ratings","nhtsaVehicleId":15305,"vehicleDescription":"2021 Cadillac XT6 SUV FWD","overall":"5","overallFront":"5","frontalDriver":"5","frontalPassenger":"5","overallSide":"5","sideDriver":"5","sidePassenger":"5","sidePole":"5","rollover":"4","rolloverPossibility":0.164,"adas":{"electronicStabilityControl":"Standard","forwardCollisionWarning":"Standard","laneDepartureWarning":"Standard"},"fetchedAt":"2026-08-01T13:28:41.727Z"},"recallSummary":{"source":"NHTSA","scope":"year_make_model","openRecallCount":2,"hasOpenRecalls":true,"hasParkIt":false,"hasParkOutside":false,"fetchedAt":"2026-07-27T12:00:42.906Z"},"referenceSpecs":{"source":"manufacturer_reference","trimName":"Premium Luxury","description":"Premium Luxury 4dr SUV (3.6L 6cyl 9A)","msrp":52795,"engineType":"gas","fuelType":"regular unleaded","cylinders":"V6","engineSizeL":3.6,"horsepowerHp":310,"torqueFtLbs":271,"transmission":"9-speed shiftable automatic","driveType":"front wheel drive","bodyType":"SUV","doors":5,"seats":7,"lengthIn":198.5,"widthIn":77.3,"heightIn":69.9,"wheelbaseIn":112.7,"groundClearanceIn":6.7,"cargoCapacityCuFt":12.6,"maxCargoCapacityCuFt":78.7,"maxTowingLbs":4000,"maxPayloadLbs":null,"curbWeightLbs":4441,"fuelTankCapacityGal":19,"combinedMpg":21,"cityMpg":19,"highwayMpg":26,"combinedMpge":null,"electricRangeMi":null,"batteryCapacityKwh":null,"chargeTime240vHr":null},"inventoryStatus":"on_lot","estimatedArrival":null,"_raw":{"lot_date":"2026-06-18"},"isFeatured":false,"internetprice":27793,"msrp":null}