**One Owner**2020**GMC**Sierra 2500HD**Denali**4WD**Ultimate Pack**Sunroof**Navigation**Heated Steering Wheel**Heated & Ventilated Front Seats**
Our Diesel powered One Owner 2020 GMC Sierra 2500HD Denali Crew Cab 4X4 with the Ultimate Pack stands proud in Onyx Black! Motivated by a TurboCharged 6.6 Liter DuraMax Diesel V8 that offers 445hp and 910lb-ft of torque to a 10 Speed Automatic transmission for outstanding strength. This Four Wheel Drive truck also rides on an off-road suspension with a two-speed AutoTrac transfer case, so you're well-equipped for taking to the trails. Distinctive design cues add a deluxe vibe to our Sierra with LED lighting, an exclusive Denali grille, a spray-on bedliner, chrome assist steps, 20-inch wheels, a versatile MultiPro tailgate, and our Ultimate Pack for a power sunroof.
More upscale details greet you in our luxurious Denali cabin. For starters, you can enjoy heated/ventilated leather front- and heated second-row seats, a heated leather steering wheel, dual-zone automatic climate control, and aluminum and ash wood accents. An 8-inch driver display and an 8-inch touchscreen work together for impressive connectivity with Android Auto/Apple CarPlay, WiFi compatibility, Bluetooth, voice control, and seven-speaker Bose audio.
GMC's safety features from our Ultimate Pack add a head-up display, a digital rearview mirror, HD surround vision, and a bed-view camera to automatic braking, blind-spot monitoring, forward collision alert, lane-change alert, rear cross-traffic alert, and more. Try our Sierra 2500HD Denali for yourself, and prepare to be impressed! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership!
Used 2020 GMCSierra 2500 HD Denali Truck Engine: V8 DuraMax Diesel, Turbo
- Diesel
- Exterior Color
- Onyx Black
- Interior Color
- JET BLACK, FORGE PERFORATED LEATHER-APPOINTED SEAT
- Odometer
- 78,575 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- VIN
- 1GT49REY0LF188787
- Stock Number
- K3978A
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!