Used 2020 GMCSierra 2500 HD AT4
- Diesel
- Exterior Color
- Onyx Black
- Interior Color
- JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHE
- Odometer
- 135,450 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- VIN
- 1GT49PEY3LF327976
- Stock Number
- 15C1939B
GMC
Sierra 2500 HD
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 36 gal
- Horsepower: 445
Dealer Notes
With our Diesel-powered **2020**GMC**Sierra 2500HD**AT4**Crew Cab**4X4**Premium Package**X31 Off-Road Package** in Onyx Black, you can be on the job even off the beaten path! Motivated by a TurboCharged 6.6 Liter DuraMax Diesel V8 offering 445hp and 910lb-ft of torque to a 10 Speed Automatic transmission. This fearless Four Wheel Drive truck is ready to face the trail with that setup, an off-road suspension, Rancho shocks, an Eaton auto-locking rear differential, and terrain management. Standing proud, our Sierra 2500HD shows off style and strength with LED lighting, a head-turning grille, power-folding trailering mirrors, a spray-on bedliner, running boards, and GMC's exclusive MultiPro tailgate. The standard Pro Grade Trailering System delivers premium pulling potential at your command.Our premium AT4 cabin puts your comfort first with heated/ventilated leather front and heated rear seats, a heated leather steering wheel, dual-zone automatic climate control, and convenient storage solutions. To match its brawn with high-tech brains, our truck has an 8-inch touchscreen, WiFi compatibility, Android Auto/Apple CarPlay, Bluetooth, and a six-speaker sound system.There are smart safety features here in our GMC as well, including an HD rearview camera, tire-pressure monitoring, multiple airbags, ABS, a rear-seat reminder, and more. Solidly built and sophisticated, our Sierra 2500 AT4 is at your service! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership!
KBB.com Consumer Reviews

Overall3.8Out of 5
- 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!…
Based on 13 consumer ratings for 2020–2026 models. | Privacy
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