2020 GMC Sierra 2500HD AT4
CARFAX One-Owner. This vehicle comes with the following features and options : AT4 Preferred Package (Bose Premium 7 Speaker Sound System, LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window w/Defogger, Radio: Premium GMC Infotainment Sys w/Navigation, Universal Home Remote, and Wireless Charging), AT4 Premium Package (Wheels: 20 6-Spoke Bright Machined Aluminum), Driver Alert Package I (Lane Change Alert w/Side Blind Zone Alert, Perimeter Lighting, Rear Cross Traffic Alert, and Ultrasonic Front & Rear Park Assist), Driver Alert Package II (Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, IntelliBeam Automatic High Beam On/Off, Lane Departure Warning System, and Safety Alert Seat), Technology Package (8 Multicolor Driver Instrument Info Display, Bed View Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Multicolor 15 Diagonal Head-Up Display, and Rear Camera Mirror), Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, Heavy Duty Front Spring/Camper Package, Hitch Package (LPO), Preferred Equipment Group 4SB (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4.2 Diagonal Color Display Driver Info Center, 4G LTE Wi-Fi Hotspot Capable, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, GMC Connected Access Capable, HD Rear Vision Camera, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Painted Black Surround Grille, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Rear Windows w/Express Down, Power Windows w/Driver Express Up/Down, Rear Wheelhouse Liners, Remote Vehicle Starter System, Spray-On Pickup Box Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, and Unauthorized Entry Theft-Deterrent System), X31 Off-Road Package (Hill Descent Control), 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, Power Sunroof, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 220 Amps Alternator, 4-Wheel Disc Brakes, 6 Speakers, 6-Speaker Audio System Feature, 6 Rectangular Black Tubular Assist Steps (LPO), ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM, Apple CarPlay/Android Auto, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Brake assist, Bumpers: body-color, Compass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front License Plate Kit, Front reading lights, Front wheel independent suspension, Fully automatic headlights, HD Radio, Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, High Idle Switch, Hitch Guidance w/Hitch View, Illuminated entry, In-Vehicle Trailering System App, Low tire pressure warning, Memory seat, Occupant sensing airbag, Off-Road Suspension, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Leather-Appointed Front Seat Trim, Pickup Box, Power door mirrors, Power driver seat, Power passenger seat, Power steering, Power windows, Premium audio system: Premium GMC Infotainment System, Radio: AM/FM w/Premium GMC Infotainment System, Rear
Used 2020 GMCSierra 2500 HD AT4
- Exterior Color
- Onyx Black
- Interior Color
- JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHE
- Odometer
- 71,678 miles
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- VIN
- 1GT49PEY2LF233524
- Stock Number
- PLF233524
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
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… - 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!… - 3.0
Don't judge a truck by the appearance
By jmil | on Wednesday, May 11, 2022
Great truck, loved it until the DEF tank heater malfunctioned and shut down the truck. Now sitting waiting for the replacement tank for over 10 weeks. Turns out every HD truck 2020 and 2021 has the same problem and all will need this replacement that is being produced at a snail's pace by GM. Per the dealership, last count, over 9000 trucks like mine are idle waiting for this part. $65000 waste of money and terrible service by GMC (not the local dealership).…
Based on 13 consumer ratings for 2020–2025 models. | Privacy
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