Pre-Owned 2026 GMC Sierra 3500HD AT4 For Sale Olympia, WA

I-5 Cars has been Family Owned & Operated since 2001 etc...This 2026 GMC Sierra 3500HD AT4 delivers commanding presence and serious capability. Finished in striking Black with a Duramax 6.6L V8 Turbodiesel engine paired to a 10-speed automatic transmission, this truck is engineered for performance and durability. The 4WD system and off-road suspension ensure confidence on any terrain, while the loaded interior showcases premium leather appointments and modern conveniences designed for both work and weekend adventures.Key Features:- AWD 4X4 with 2-Speed Active Transfer Case- Sunroof/Moonroof- Leather-appointed interior with heated and ventilated front seats- Premium GMC Infotainment System with SiriusXM 360L- Bose Premium 7-Speaker Sound System- HD Surround Vision with Bed View Camera- Wireless Charging and Wireless Phone Projection- Lane Departure Warning, Forward Collision Alert, and Automatic Emergency BrakingThis AT4 comes with genuine factory equipment and meticulous care. The premium package includes advanced safety technologies, heated rear seats, power adjustable seats with lumbar support, and a spray-on bedliner with GMC logo. Convenience features like remote vehicle starter, push-button start, and Ultrasonic Park Assist make daily driving effortless. The truck rides on 20-inch High Gloss Black aluminum wheels and benefits from modern LED lighting throughout.Ready to experience this exceptional Sierra 3500HD? Visit us to take a closer look and discuss how this truck can serve your needs.