2018 GMC Sierra 2500 HD Crew Cab Denali 4WD Pickup 4D 6 1/2 ft bed. This one owner pickup is equipped with the 931 ft-lb torque 448 horsepower 6.6L Duramax diesel engine and Allison six-speed automatic transmission. Intellilink infotainment system with mobile 4G-LTE internet hotspot, Apple CarPlay. Towing mirrors with optional trailering camera system, bed-mounted hitch for towing with a gooseneck or fifth-wheel trailer, factory spray-on bedliner, and off-road suspension package with twin-tube Rancho shock absorbers. New Goodyear Wrangler SRA tires installed in November of 2021.