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.
Recent Arrival!
10-Speed Automatic, 4WD, Jet Black Leather.
Quicksilver Metallic 2020 GMC Sierra 2500HD Denali 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 2020 GMCSierra 2500 HD Denali Crew Cab
- Diesel
*Please Call Dealer For Details, Vehicle May Be In Transit
- Exterior Color
- Quicksilver Metallic
- Interior Color
- JET BLACK, FORGE PERFORATED LEATHER-APPOINTED SEAT
- Odometer
- 99,429 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- VIN
- 1GT49REY3LF322319
- Stock Number
- SI26507A
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 36 gal
- Horsepower: 445
Dealer Notes
KBB.com Consumer Reviews
- 2.0
Transmission trash
By Jason on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk - 3.0
Infotainment system unreliable!
By Brian C on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another. - 5.0
Fantastic truck
By Jjj on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!
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.