The 2023 GMC Sierra 2500HD AT4 is the ultimate heavy-duty pickup for those who demand uncompromising capability and premium features. This rugged and sophisticated truck is ready to take on any challenge, whether you're tackling tough job sites, navigating off-road adventures, or simply seeking a refined and comfortable daily driver.
6.6L V8 Duramax Diesel Turbocharged Engine
AT4 Premium Plus Package
Driver Alert Package I and II
Technology Package
X31 Off-Road Package
Bose Premium 7-Speaker Sound System
Radio with Premium GMC Infotainment System and Navigation
Power Sunroof
Hill Descent Control
Off-Road High Clearance Steps
Bed View Camera with Trailer Camera Provisions
HD Surround Vision with Trailer View Camera Provisions
Wireless Charging
20 Machined Aluminum Wheels
Beneath the bold and rugged exterior lies a cabin that exudes refinement and comfort. Perforated leather-appointed front seats are both heated and ventilated, ensuring you and your passengers stay comfortable in any climate. The premium audio system and advanced infotainment features keep you connected and entertained, while the intuitive driver assistance technologies provide added peace of mind.
The Duramax 6.6L V8 Turbodiesel engine delivers an impressive 445 horsepower and 910 lb-ft of torque, providing the power and capability you need to tackle the toughest jobs. The 10-speed automatic transmission and 4-wheel drive system ensure seamless power delivery and exceptional off-road performance, making the Sierra 2500HD AT4 a true force to be reckoned with.
Whether you're hauling heavy loads, towing a large trailer, or simply seeking a capable and well-appointed daily driver, the 2023 GMC Sierra 2500HD AT4 is the perfect choice. Its uncompromising blend of power, technology, and premium features make it a standout in the heavy-duty truck segment.
We invite you to experience the exceptional capabilities and refined luxury of the 2023 GMC Sierra 2500HD AT4 for yourself. Visit our showroom today and let us demonstrate why this truck is the perfect fit for your needs.
The listed online price reflects a $1,000 finance incentive and a $1,000 qualifying retail trade-in incentive; absence of either or both incentives will result in an increase of up to $2,000 to the final sale price.
Used 2023 GMCSierra 2500 HD AT4
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Odometer
- 37,001 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT49PEYXPF133886
- Stock Number
- D08148A
Highlighted Features
- Navigation system
- 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
Included Packages & Accessories
- Bose premium 7 speaker sound system
- wireless charging
- IntelliBeam Automatic High Beam on/off
- Following Distance Indicator
- bed view camera with two trailer camera provisions
- 8" driver information center
- Lane Change Alert with Side Blind Zone Alert
- multicolor 15" diagonal head-up display
- Allison 10-speed automatic transmission
- 11,350 lbs GVWR
- power-retractable black assist steps
- safety alert seat
- 20" machined aluminum wheels
- Driver Alert package I
- ultrasonic front and rear park assist
- rear Cross Traffic Alert
- perimeter lighting
- winter grille cover
- power sliding rear window with defogger
- universal home remote
- engine block heater
- GMC MultiPro Tailgate step lights
- AT4 premium plus package
- AT4 preferred package
- HD surround vision with 2 trailer view camera provisions
- AM/FM stereo with premium GMC Infotainment System and navigation
- LED smoked amber roof marker lamps
- Driver Alert package II
- Forward Collision Alert
- Lane Departure Warning
- automatic emergency braking
- power sunroof
- technology package
- inside rearview auo-dimming rear camera mirror
- off-road high clearance step
- front bucket seats
- 10-way power driver seat adjuster with lumbar
- 10-way power passenger seat adjuster with lumbar
- driver memory
- preferred equipment group 4SB
- AM/FM stereo with premium GMC Infotainment System
- 6-speaker audio system feature
- SiriusXM with 360L
- wireless phone projection
- floor-mounted center console
- compass located in instrument cluster
- 4.2" diagonal color display driver info center
- electric rear-window defogger
- power door locks
- remote vehicle starter system
- keyless open and start
- front premium floor liners with removable carpet insert
- rear premium floor liners with removable carpet insert
- OnStar and GMC connected services capable
- Wi-Fi hotspot capable
- GMC connected access capable
- 12-volt rear auxiliary power outlet
- 120-volt instrument panel power outlet
- 120-volt bed mounted power outlet
- 2 USB ports
- 2nd row dual USB charge-only ports
- HD rear vision camera
- spray-on pickup box bed liner with AT4 logo
- heated driver and front outboard passenger seats
- heated and ventilated front bucket seats
- heated 2nd row outboard seats
- steering wheel audio controls
- manual tilt-wheel/telescoping steering column
- electrical lock control steering column
- unauthorized entry theft-deterrent system
- deep-tinted glass
- painted black surround grille
- power windows with driver express up/down
- power front passenger windows with express up/down
- power rear windows with express down
- LED cargo area lighting
- red recovery hooks
- rear wheelhouse liners
- X31 off-road package
- off-road suspension
- hill descent control
- skid plates
- integrated trailer brake controller
- ProGrade trailering system
- hitch guidance with hitch view
- in-vehicle trailering system App
- 6.6L V8 with direct injection and variable valve timing engine
- heavy-duty 80 amp battery
- 10,650 lbs GVWR
- 2-speed active transfer case
- 3.42 axle ratio
- Duramax 6.6L turbo-diesel V8 engine
- capped fuel fill
- 220 amps alternator
- dual heavy-duty 70 amp battery
- exhaust brake
- body color wheel arch moldings
- LT275/65R20 AT BW tires
- spare LT275/70R18 AT BW tire
Detailed Specifications
- 1-touch down
- 1-touch up
- 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
- Moonroof sunshade: manual
- Navigation system
- 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
- Remote keyless entry
- Speed control
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/65SR20.0
- Front wheel independent suspension
- Power steering
- Rear tires: 275/65SR20.0
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 20"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-way passenger lumbar support
- 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: 445hp @ 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: 910 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- 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: 3,515kg (7,749lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine horsepower: 445hp @ 2,800RPM
- Engine torque: 910 lb.-ft. @ 1,600RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,023mm (79.7")
- Exterior length: 6,352mm (250.1")
- 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")
- Payload: 1,616kg (3,563lbs)
- Rear headroom: 1,013mm (39.9")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,037mm (158.9")
- Appearance: analog
- Auto high-beam headlights
- Blind spot: Lane Change Alert with Side Blind Zone Alert warning
- Compass
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear
- 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
- 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
- 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
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!