2020 GMC Sierra 2500HD SLT — One-Owner, Duramax Diesel, 4WD (117,068 miles) Powerful, capable and well-equipped — this one-owner 2020 Sierra 2500HD SLT in gray pairs the legendary Duramax 6.6L turbo-diesel V8 with the Allison 10-speed automatic for confidence whether you’re towing, hauling or heading off-road. With 4WD and a comprehensive trailering and tow-focused equipment list, this truck is ready for work or weekend adventures. Key highlights - Engine/Drivetrain: Duramax 6.6L Turbo-Diesel V8 (B20-compatible) with Allison 10-speed automatic transmission; 4WD - Towing & capability: Pro Grade Trailering Package, Towing/Camper Package, exhaust brake, 220-amp alternator, multi-function GMC MultiPro tailgate - Off-road & protection: X31 Off-Road Package with hill descent control and skid plates - Bed & exterior: Spray-on bed liner with GMC logo, fixed chromed tubular running boards, aluminum/alloy wheels, winter grille cover, LPO wheel locks - Convenience & comfort: SLT Premium Plus / Convenience / Preferred Packages, chromed 6" assist steps, rear power sliding window, center floor console, license plate kit (front) - Interior & tech: Premium GMC infotainment with 8" touchscreen and navigation, Bose 7-speaker premium sound, wireless charging, dual USB ports (first row) - Seating & climate: Leather seating with ventilated driver and front passenger; heated second-row outboard seats - Safety & driver aids: Automatic Emergency Braking, Forward Collision Alert, Lane Departure Warning, Lane Change Alert with Side Blind Zone Alert, Rear Cross Traffic Alert, Front & Rear Park Assist (ultrasonic), Following Distance Indicator, IntelliBeam automatic high beam, Safety Alert Seat - Extras: Engine block heater, smoked amber LED roof marker lamps, exhaust brake, LPO wheel locks, bed liner spray-on Condition & ownership - Age classification: Used - One-owner vehicle - Mileage: 117,068 This Sierra 2500HD SLT delivers heavy-duty capability with premium comfort and a long list of