This 2018 GMC Sierra 2500HD Denali is built to handle demanding work and deliver serious capability wherever the road takes you.

- Duramax 6.6L Turbodiesel V8 engine with Allison 1000 6-speed automatic transmission
- Duramax Plus Package with dual 150-amp and 220-amp alternators
- Gooseneck/5th wheel prep package for professional-grade towing setup
- Off-road suspension package with Rancho twin-tube shocks and hill descent control
- Heated and ventilated leather-appointed front bucket seats with power adjustment
- Dual-zone automatic climate control with rear window defroster
- GMC Infotainment System with navigation, Apple CarPlay, and Android Auto integration
- SiriusXM satellite radio with HD radio capability
- Ultrasonic front and rear park assist with rearview camera
- Wireless charging and 110-volt AC power outlet
- Chrome recovery hooks and heavy-duty hitch package with gooseneck ball and chain kit
- 20-inch chrome cast aluminum wheels with all-weather floor liners
- OnStar and GMC Connected Services with 4G LTE connectivity
- Electronic stability control, lane departure warning, and forward collision alert
- Fully automatic HID headlights with fog lamps

This Sierra 2500HD combines the working strength of a diesel workhorse with the refined comfort of the Denali trim. The turbodiesel engine delivers the torque and durability you need for serious hauling, while the Allison transmission ensures smooth, reliable power delivery. The truck is equipped comprehensively for towing with the gooseneck prep package, recovery hooks, and integrated trailer brake controller already installed—making it ready for the heaviest trailers and most challenging jobs.

The interior reflects Denali's premium positioning with heated and ventilated leather seats, dual-zone climate control, and the GMC Infotainment system featuring navigation and smartphone integration. The heated steering wheel and power-adjustable pedals add practical comfort for long days on the road. Wireless charging and the 110-volt outlet keep your devices powered throughout the day.

The off-road suspension package with Rancho shocks and hill descent control gives this truck genuine capability beyond the highway, while the 4-wheel independent front suspension and 4-wheel disc brakes provide the control needed for safe handling in all conditions. Lane departure warning and forward collision alert add layers of safety awareness.

Modern connectivity is woven throughout, with OnStar and GMC Connected Services providing peace of mind and remote vehicle access. The Bose 7-speaker audio system with SiriusXM delivers quality entertainment whether you're commuting or on a job site.

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