2018 GMC Sierra 3500HD Denali Crew Cab 4WDDuramax Turbo-Diesel | Onyx Black | Jet Black Leather | Texas-OwnedIf you’re looking for a heavy-duty diesel truck with proven capability and a documented ownership history, this 2018 GMC Sierra 3500HD Denali delivers exactly what HD buyers prioritize: Duramax power, Denali-level comfort, and a well-maintained, personal-use background.Finished in Onyx Black with a Jet Black leather interior, this Denali presents cleanly and confidently. Custom wheels and aggressive all-terrain tires give it a strong, purposeful stance while maintaining the ride quality and road manners expected from a premium HD truck.Duramax Power & Allison ReliabilityAt the heart of this Sierra is GMC’s proven 6.6L Duramax Turbo-Diesel V8, paired with the Allison 1000 6-speed automatic transmission—a combination trusted by owners who tow, haul, and rack up miles.This setup delivers:Strong low-end torque for heavy towingConfident passing power on the highwaySmooth, predictable power deliveryLong-term durability under loadFour-wheel drive adds traction and control for job sites, wet conditions, and uneven terrain.Denali Interior — Built for Long DaysThe Denali trim transforms hard work into a comfortable experience:Heated and ventilated front leather seatsHeated steering wheelDual-zone automatic climate controlPremium Denali materials and trimQuiet, well-insulated cabinIt’s a truck designed to handle long drives and full workdays without feeling like a stripped-down work rig.Technology & Driver AssistanceFeatures that support daily driving and trailering duties include:Touchscreen infotainment systemNavigation capabilityApple CarPlay® & Android Auto™Bose® premium audio systemRemote startFront & Rear Park AssistRear Vision CameraBlind Zone Alert & Rear Cross Traffic AlertEverything is intuitive and designed to reduce fatigue behind the wheel.Exterior & Utility HighlightsCrew Cab configurationCustom wheels with all-terrain tiresHeavy-duty bed and chassis componentsIntegrated trailering hardwareSignature Denali grille and exterior trimThe truck reflects careful ownership and presents as a well-kept HD diesel.Transparent Ownership HistoryCARFAX highlights include:No accidents reportedPersonal-use vehicle25 documented service history recordsTexas ownership63,213 milesThe vehicle has been professionally inspected and drives exactly as expected for a properly maintained Duramax HD.A Straightforward ExperienceAt Platinum Chevrolet Cadillac:No hidden feesNo forced add-onsNo surprisesYour truck. Your decision.If you’re searching for a Duramax-powered Denali HD with real service history, strong presentation, and the capability to handle serious work or towing, this 2018 GMC Sierra 3500HD Denali is well worth a closer look. Let us know when you’d like to see it—we’ll keep the process clear and straightforward.