Disclaimer:
New vehicle pricing includes all offers and incentives. Title, tax, registration, document, and other required government fees, and, where applicable, set up and predelivery inspection fees, are not included in vehicle prices and estimated payment amounts shown and must be paid by the purchaser. While great effort is made to ensure the accuracy of the information on this site, errors do occur so please verify information with a customer service rep. This is easily done by calling us at (208) 388-4400 or by visiting us at the dealership.
**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a 72 month term, 5.9% interest and 20% downpayment.
At Dennis Dillon we are so confident in our “Guaranteed Best Pricing” we will beat any price by $500 based on the following guidelines:
– Vehicles must have the same MSRP.©2026. Dennis Dillon FIAT. All Rights Reserved.
While great effort is made to ensure the accuracy of the information on this site, errors can occur. Please verify all pricing and installed equipment information with a customer service representative. This is easily done by calling us or visiting us at the dealership.
Customer may not qualify for ALL Rebates shown. Some rebates are stackable and others can and cannot be combined. See Dealer For Complete Details.
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Experience the pinnacle of power and refinement in the 2026 GMC Sierra 3500HD Denali Ultimate. This heavy-duty pickup is engineered to conquer any task with its robust Duramax 6.6L V8 Turbodiesel engine and advanced 4WD capabilities. Elevate your drive with a host of premium features that deliver unparalleled comfort, convenience, and style.
- DENNIS DILLON DEAL
- LPO, CARGO TIE-DOWN RINGS, SET OF 4 (dealer-installed)
- LPO, GMC MULTIPRO TAILGATE STEP LIGHTS (dealer-installed)
- UPFITTER SWITCH KIT, (5)
- Onyx Black
- Black
- ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY
- 3 YEARS SIRIUSXM
- HIGH IDLE SWITCH
- GOOSENECK / 5TH WHEEL PREP PACKAGE
Indulge in the Denali Ultimate's exceptional craftsmanship, from the premium Bose audio system to the heated and ventilated leather seats. Stay connected and entertained with the advanced GMC Infotainment System, featuring a 13.4-inch diagonal high-definition display, wireless charging, and seamless smartphone integration. The Multicolor 15-inch Head-Up Display puts crucial information right in your line of sight, enhancing your driving experience.
Tackle any terrain with confidence, thanks to the Sierra's robust 4WD system and advanced trailering technologies. The Gooseneck/5th Wheel Prep Package ensures you're ready to haul your heaviest loads, while the ProGrade Trailering System provides a suite of tools to make towing a breeze. The Trailer Camera Provisions and Trailer Side Blind Zone Alert add an extra layer of safety and convenience.
Elevate your driving experience with the 2026 GMC Sierra 3500HD Denali Ultimate. This exceptional heavy-duty pickup combines uncompromising capability, refined luxury, and cutting-edge technology to deliver a truly remarkable driving experience. Visit our showroom today to discover the power and prestige of the Denali Ultimate.
Family owned and operated for over 50 years!