At Diamond Auto Group we want you to know that all our vehicles are priced at a competitive value position to the market. We use an independent 3rd party software to research internet listings on all vehicles in the market so we can ensure that our prices are the most competitive out there. We do this simply so people choose us when they start searching for their next car. Tax, title, license and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers. Online pricing is after $2000 cash down or trade equity, Buyer must present price to dealership to receive online pricing.
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10-Speed Automatic, 4WD, Alpine Umber Leather.
White Frost Tricoat 2025 GMC Sierra 3500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel
Our dedicated staff's ultimate goal is always your complete satisfaction! Whether you're purchasing a vehicle, picking up parts or having your vehicle serviced in our state of the art service department, we appreciate that you have chosen The Diamond Auto Group. **WE WON'T BE UNDERSOLD OR OUT TRADED!!**
Used 2025 GMCSierra 3500 HD Denali Ultimate Crew Cab
*Please Call Dealer For Details, Vehicle May Be In Transit
- Exterior Color
- White Frost Tricoat
- Interior Color
- ALPINE UMBER, FULL GRAIN LEATHER SEATING SURFACES
- Odometer
- 27,129 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L Duramax Turbo-Diesel V8 engine
- VIN
- 1GT4UYEY8SF148495
- Stock Number
- SI26351A
GMC
Sierra 3500 HD
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 36 gal
- Horsepower: 470
Dealer Notes
KBB.com Consumer Reviews

Overall4.2Out of 5
- 5.0
2020 GMC Denali 3500 HD Duramax is a BEAST!
By Merlinsmerc | on Friday, January 22, 2021
Pulling a conventional 10,000 lb trailer over mountain passes is a whole new experience. Staying at the speed limit up long steep grades did not change the engine temperature. I feathered the accelerator up the mountain. The new 10 speed transmission is so smooth you cant feel it changing gears. This is my second GMC Denali Duramax, first being a 2016. I debated trading in for over a year, and am so happy I made the trade. Trailers always exceed by far the tongue weight posted on them, and in my case it came in at 1450 lbs. That exceeded my trucks posted maximum. The 2020 dually posts a 2,000 lb tongue weight, so now I can front load the trailer, and that reduces sway. If you can afford it, and have a heavy trailer, buy the truck!… - 5.0
Love our truck
By Ron | on Friday, December 11, 2020
The truck doesn’t have a sun roof which it was suppose to have… - 2.0
In shop for 13 weeks so far!
By Whip | on Monday, September 09, 2024
My truck has been in the shop for 13 weeks to this point with no end in sight. The Infotainment panel blew out which controls pretty much everything. Nice truck except if something goes wrong then, good luck! I would recommend looking at Fords and Rams and ask the question, how many vehicles do you have in your shop waiting for parts and for how long. I heard of one at my GMC dealership that has been waiting for 8 months! Only thing I get from GM is "we understand your frustration". Apparently they don't, or I would have my truck back long ago.…
Based on 6 consumer ratings for 2020–2025 models. | Privacy
Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price. We are not responsible for typographical errors. Our pricing changes daily and may not show updated.
1Dealer Discount applied to everyone
Tax, title, license and
dealer fees (unless itemized above) are extra. Not available with special
finance or lease offers. Online pricing is after $2000 cash down or trade
equity, Buyer must present price to dealership to receive online pricing.
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