Used 2021 GMCSierra 2500 HD Denali
- Diesel
- Exterior Color
- Summit White
- Interior Color
- JET BLACK, FORGE PERFORATED LEATHER SEAT TRIM
- Odometer
- 127,764 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- VIN
- 1GT49REY0MF319086
- Stock Number
- 3T0402A
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:
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.
GUARANTEED BEST PRICING POLICY
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.
- Vehicles must be the same Year, Make, Model and equipment.
- Customer must have a purchase agreement signed and dated by a sales manager from the competing dealer.
- Customer information and incentive eligibility must be the same as used in the competing offer.
- Deal must be finalized in the same calendar month as the date of the signed purchase agreement from the competing dealer.
- Demonstrators, Service Loaners and vehicles with over 200 miles do not qualify for this policy.
- Commercial and Government Fleet vehicles do not qualify for this policy.
- Dennis Dillon reserves the right to purchase the vehicle from the competing dealer.
- This offer applies to the new vehicle price after applicable incentives, and does not include accessories, trade-allowance, or any other item affecting the final sale price.
- All prices plus Dealer Doc fee and applicable taxes and title fee.
- Based on one-time, best offer from competing dealer.
- Your Price
- $49,799
- We're here to help: (208) 336-6000
- We're here to help: (208) 336-6000




