Onyx Black exterior and Obsidian Rush interior. CARFAX 1-Owner. Heated Leather Seats, Sunroof, NAV, Heated Rear Seat, 4x4, Turbo, Bed Liner, Alloy Wheels, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, TRANSMISSION, ALLISON 10-SPEED AUTOMA... ENGINE, DURAMAX 6.6L TURBO-DIESEL V8... AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM.. Tow Hitch.
KEY FEATURES INCLUDE
Leather Seats, Sunroof, 4x4, Heated Driver Seat, Heated Rear Seat. GMC AT4X with Onyx Black exterior and Obsidian Rush interior features a 8 Cylinder Engine with 470 HP at 2800 RPM*.
OPTION PACKAGES
ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.), AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto® and Apple CarPlay® capability for compatible phones (STD), TRANSMISSION, ALLISON 10-SPEED AUTOMATIC.
Pricing analysis performed on 12/18/2025. Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.
Pre-Owned 2024 GMCSierra 2500HD AT4X 4WD Crew Cab 159 4WD Crew Cab 159
- Exterior Color
- Onyx Black
- Interior Color
- Obsidian Rush
- Odometer
- 19,967 miles
- Body/Seating
- 4WD Crew Cab 159/5 seats
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 8
- VIN
- 1GT49ZEY7RF304351
- Stock Number
- 8485UU
GMC
Sierra 2500HD
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Power moonroof
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
Included Packages & Accessories
- 10-Speed A/T
- 4-Wheel Disc Brakes
- 8 Cylinder Engine
- A/C
- A/T
- ABS
- Adaptive Cruise Control
- Adjustable Steering Wheel
- Aluminum Wheels
- AM/FM Stereo
- Apple CarPlay
- Auto-Dimming Rearview Mirror
- Auxiliary Audio Input
- Back-Up Camera
- Bed Liner
- Blind Spot Monitor
- Bluetooth
- Bucket Seats
- Climate Control
- Conventional Spare Tire
- Cross-Traffic Alert
- Cruise Control
- Daytime Running Lights
- Diesel Fuel
- Driver Adjustable Lumbar
- Driver Air Bag
- Floor Mats
- Fog Lamps
- Four Wheel Drive
- Front Head Air Bag
- Front Side Air Bag
- Gasoline Fuel
- Heated Mirrors
- Heated Seats
- Heated Steering Wheel
- Integrated Turn Signal Mirrors
- Intermittent Wipers
- Keyless Entry
- Keyless Start
- Leather Seats
- Leather Steering Wheel
- Locking/Limited Slip Differential
- Mirror Memory
- MP3 Player
- Multi-Zone A/C
- Navigation System
- Passenger Adjustable Lumbar
- Passenger Air Bag
- Power Door Locks
- Power Driver Seat
- Power Mirror(s)
- Power Passenger Seat
- Power Steering
- Power Windows
- Premium Sound
- Privacy Glass
- Rain Sensing Wipers
- Rear Defrost
- Rear Head Air Bag
- Rear Parking Aid
- Remote Start
- Running Boards/Side Steps
- Satellite Radio
- Seat Memory
- Security System
- Sliding Rear Window
- Smart Device Integration
- Stability Control
- Steering Wheel Audio Controls
- Sunroof / Moonroof
- Telematics
- Tire Pressure Monitor
- Tires - Front All-Season
- Tires - Rear All-Season
- Tow Hitch
- Tow Hooks
- Traction Control
- Turbo/Supercharged
- Universal Garage Door Opener
- Variable Speed Intermittent Wipers
- WiFi Hotspot
Detailed Specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar and GMC connected services capable
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Moonroof sunshade: manual
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power moonroof
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob and smart device (subscription required)
- Remote keyless entry
- Speed control
- Surround View Monitor: HD Surround Vision w/Hitch View yes
- Telescoping steering wheel
- Tilt steering wheel
- Transparent trailer view
- Alloy wheels
- Front anti-roll bar
- Front tires: 305/70RR18.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 305/70RR18.0E
- Single rear wheels
- Speed-sensing steering
- Wheel size: 18"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose Performance Series
- Speakers: 12
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather steering wheel
- Leather upholstery
- Massaging driver lumbar support
- Massaging passenger lumbar support
- Max seating capacity: 5
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Horsepower: 470hp @ 2,800RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Standard fuel economy fuel type: gasoline
- Torque: 975 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Departure angle: 26 deg
- Auto-dimming door mirrors
- Bedliner
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Compression ratio: 16.00 to 1
- Curb weight: 3,736kg (8,237lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine horsepower: 470hp @ 2,800RPM
- Engine torque: 975 lb.-ft. @ 1,600RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,100mm (82.7")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- GVWR: 5,148kg (11,350lbs)
- Payload: 1,392kg (3,069lbs)
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Towing capacity: 8,391kg (18,500lbs)
- Turning radius: 7.9m (25.9')
- Wheelbase: 4,039mm (159.0")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Trailer Side Blind Zone Alert warning
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Heads up display
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Traction control
Dealer Notes

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 2020–2025 models. | Privacy
* The advertised price does not include sales tax, vehicle registration fees, other fees required by law, finance charges and any documentation charges.
* Vehicle shown is for illustrative purposes. Actual vehicle image and details may differ. Vehicle in transit.
- Market Price
- $82,499
- We're here to help: (916) 632-3231
- We're here to help: (916) 632-3231




