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In Highland IL Searching for a new Buick or GMC for sale near Belleville O'Fallon Fairview Heights Collinsville Edwardsville or Greater St. Louis? Steve Schmitt Inc. In Highland IL is your trusted local auto dealership offering a premier selection of new Buick SUVs GMC trucks luxury crossovers and family-friendly vehicles. Whether you need the rugged towing capability of a GMC Sierra 1500 the spacious comfort of a GMC Yukon or Acadia or the refined luxury and fuel efficiency of a Buick Enclave Envision or Envista our team is dedicated to helping you find the perfect vehicle at a competitive price. At Steve Schmitt Chevrolet Buick GMC we make buying your next vehicle simple flexible and stress-free. Take advantage of our convenient Shop & Buy Online tools???customize your payments get pre-approved for financing estimate your trade-in value and complete your purchase 100% online from the comfort of your home. From digital buying to certified service Steve Schmitt Inc. Continues to be the preferred Buick and GMC dealer for truck and SUV shoppers throughout Highland Madison County Southern Illinois and the St. Louis metro area. Visit our showroom in Highland today or browse our digital showroom online to start your purchase and schedule a test drive!<br><br>2026 GMC Sierra 2500HD Denali 4D Crew Cab Duramax 6.6L V8 Turbodiesel 4WD Onyx Black<br><br><br>Price advertised is subject to qualifying for all applicable rebates. You pay the price listed plus a $377 documentation fee applicable tax title and license less any extra incentives if available andor applicable. Please call 618-654-2181 for more details! $1500 - GM Bonus Cash. Exp. 08312026 $2000 - Buick GMC Bonus Cash. Exp. 08312026 $500 - GM First Responder Cash Allowance Program. Exp. 01042027 $500 - GM Rewards Card Sales Sign Up and Spend Offer. Exp. 09302026","additionalProperty":[{"@type":"PropertyValue","name":"feature","value":"SiriusXM with 360L Trial Subscription"},{"@type":"PropertyValue","name":"feature","value":"Preferred Equipment Group 5SA"},{"@type":"PropertyValue","name":"feature","value":"Cargo Tie-Down Rings (set of 4)"},{"@type":"PropertyValue","name":"feature","value":"12-Way Power Driver Seat Adjuster with Lumbar"},{"@type":"PropertyValue","name":"feature","value":"Driver Memory"},{"@type":"PropertyValue","name":"feature","value":"Power Sliding Rear Window with Defogger"},{"@type":"PropertyValue","name":"feature","value":"12-Way Power Passenger Seat Adjuster with Lumbar"},{"@type":"PropertyValue","name":"feature","value":"Power F"}],"image":[{"@type":"ImageObject","url":"https://imgcdn.lotlinx.com/vdn/95594/gmc_sierra%202500%20hd_2026_1GT4UREY7TF359887_95594_2751178985.jpg?ver=20260822","description":"2026 GMC Sierra 2500HD - Primary exterior view","representativeOfPage":true}],"seller":{"@type":"AutoDealer","name":"Steve Schmitt Buick GMC Highland","slug":"steve-schmitt-buick-gmc-highland-highland-il","telephone":null,"url":null,"address":{"@type":"PostalAddress","postalCode":"62249","addressRegion":"IL","streetAddress":"12631 IL-143","addressCountry":"US","addressLocality":"Highland"},"latitude":"38.7491000","longitude":"-89.6802000","dealerGroup":null,"aggregateRating":{"@type":"AggregateRating","ratingValue":4.6,"reviewCount":968,"bestRating":5,"worstRating":1}},"stockNumber":null,"slug":"2026-gmc-sierra-2500hd-unknown","dateCreated":"2026-08-18T10:34:57.750Z","dateModified":"2026-08-25T10:35:18.914Z","safetyRating":null,"recallSummary":null,"referenceSpecs":null,"inventoryStatus":"on_lot","estimatedArrival":null,"_raw":{"lot_date":"2026-07-28"},"isFeatured":false,"internetprice":88775,"msrp":null}