One-owner 2021 GMC Sierra 2500HD Denali — Blue exterior with Dark Walnut/Dark Ash Grey leather interior. Exceptionally equipped heavy-duty pickup with 106,642 miles, built to tow, work and travel in comfort. Power and capability - Duramax 6.6L Turbo-Diesel V8 (B20-compatible) paired with Allison 10-speed automatic transmission for smooth, confident performance under load. - Pro Grade Trailering, Towing/Camper and Gooseneck/5th Wheel prep packages plus Trailer Tire Pressure Monitor Sensors and Exhaust Brake — ready for serious towing duties. - 220-amp alternator, high-idle switch and heavy-duty accessory prep included. Premium Denali comfort and tech - Denali Ultimate Package and Technology Package deliver luxury and advanced convenience: Premium GMC Infotainment with navigation on an 8" touchscreen, 15" multi-color head-up display, rear camera mirror with full camera display, and rear parking sensors. - Power sunroof, power driver’s seat, power-retractable running boards, universal garage door opener and front license plate kit add everyday convenience. - Leather-appointed Dark Walnut/Dark Ash Grey interior with thoughtful trim and creature comforts. Capability-focused features - X31 Off-Road package, GMC MultiPro Tailgate, aluminum/alloy wheels and winter grille cover enhance versatility across seasons and terrain. - Installed gooseneck/5th wheel hitch platform, towing/Camper package and robust Duramax/Allison drivetrain make this Sierra a go-anywhere, tow-anything truck. Additional highlights - Power sunroof, assist steps, premium audio, interior navigation and advanced driver alert packages (Driver Alert 1 & 2) for safety and ease of driving. - Practical touches: engine block heater, alternator upgrade, high idle switch, and license plate kit. This Sierra 2500HD Denali blends Denali luxury with commercial-grade capability and towing readiness — ideal for owners who need serious capability without sacrificing comfort. One careful owner and comprehensive, fact