This 2017 GMC Sierra 3500HD SLT in Gray combines heavy-duty capability with refined comfort, delivering a truck built for serious work and daily driving satisfaction. - Duramax 6.6L Turbodiesel V8 engine with Allison 1000 6-speed automatic transmission - 4WD with electronic shift transfer case and hill descent control - Heated and ventilated perforated leather-appointed front bucket seats with 10-way power adjusters - Bose premium audio system with AM/FM/SiriusXM and 8 navigation touchscreen - Front and rear ultrasonic park assist with rear vision camera - Lane Departure Warning and Forward Collision Alert with Safety Alert Seat - Leather-wrapped heated steering wheel with power adjustable pedals - Off-road suspension package with twin tube Rancho shocks - Chrome assist steps and trailering wiring provisions for fifth wheel and gooseneck trailers - Power sliding rear window with defogger - Remote vehicle starter system and universal home remote - Dual-zone automatic climate control with rear window defogger - 18 chromed aluminum wheels with all-terrain tires This Sierra 3500HD has been well-maintained and carries the legacy of GMC's truck engineering. The diesel engine paired with the Allison transmission provides the durability expected from this platform, while the SLT trim delivers premium touches throughout the cabin. The combination of heated and ventilated leather seating, the Bose audio upgrade, and navigation technology creates a commanding driving environment. Whether you're managing a job site or enjoying weekend adventures, the off-road suspension package and available hill descent control enhance capability across varied terrain. Practical features like the power sliding rear window, LED cargo box lighting, and integrated trailering provisions demonstrate thoughtful design for truck owners. The driver alert package adds confidence with lane departure warning and forward collision alert technologies. OnStar connectivity with 4G LTE keeps you connected, while the remote vehicle starter system adds convenience during cold mornings or pre-trip preparation. This truck represents a solid investment in capability and comfort. With its proven diesel engine, premium interior appointments, and comprehensive feature set, it stands ready to serve both work and lifestyle demands. We invite you to experience this Sierra 3500HD firsthand and discover why it remains a trusted choice for those who demand performance and refinement. At Reineke Family of Dealerships, we pride ourselves on delivering a conve