⢠6.6L V8 Turbo Diesel engine with 10-speed automatic transmission
⢠AT4 Off-Road Package with X31 capabilities
⢠Premium leather seats with driver power adjustments and lumbar support
⢠ProGrade Trailering System with in-vehicle app and hitch guidance
⢠Running boards and integrated tailgate step for easy access
⢠Multi-zone climate control with rear air vents
⢠WiFi hotspot connectivity
⢠Keyless entry with remote engine start
⢠Power-folding mirrors with heat, turn signals, and memory settings
⢠Heavy-duty 720 cold-cranking amp battery
⢠Four-wheel drive with locking differential
⢠Anti-lock disc brakes on all wheels
⢠Comprehensive airbag system throughout cabin
⢠Backup camera with trailer alignment assistance
⢠Pacific Blue Metallic exterior with body-colored bumpers
⢠Premium aluminum wheels
⢠Cargo tie-downs rated at 500 lbs per corner
⢠Center console with phone storage and power management
⢠Leather-wrapped steering wheel with adjustment controls
⢠Tow hooks and integrated bed liner
Used 2021 GMCSierra 2500 HD AT4 Truck Crew Cab
- Exterior Color
- Pacific Blue
- Interior Color
- Jet Black
- Odometer
- 35,539 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT49PEYXMF310979
- Stock Number
- 310979
Highlighted Features
- Leather upholstery
- Automatic temperature control
- Premium audio system
- Wireless phone connectivity
- Front dual zone A/C
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
- Heated front seats
- Ventilated front seats
- Perimeter/approach lights
- Remote keyless entry
Included Packages & Accessories
- 6 Speakers
- AM/FM radio: SiriusXM with 360L
- BOSE Premium Audio System
- Premium audio system: Premium GMC Infotainment System
- Air Conditioning
- Automatic temperature control
- Front dual zone A/C
- Rear window defroster
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Front anti-roll bar
- Front wheel independent suspension
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Pickup Box
- Brake assist
- Electronic Stability Control
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- 220 Amps Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- Auto-dimming door mirrors
- Black Sport Step (LPO)
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- Power door mirrors
- Rear step bumper
- Turn signal indicator mirrors
- Winter Grille Cover
- 2 USB Ports (1st Row)
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Compass
- Driver door bin
- Driver vanity mirror
- Front reading lights
- Heated steering wheel
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Voltmeter
- Front Center Armrest
- Heated front seats
- Heated rear seats
- Perforated Leather-Appointed Front Seat Trim
- Power passenger seat
- Split folding rear seat
- Ventilated front seats
- Passenger door bin
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- 18" Machined Aluminum Wheels
- 20" Machined Aluminum Wheels
- Alloy wheels
- Variably intermittent wipers
- 3.42 Axle Ratio
- 3.73 Rear Axle Ratio
- ** LEATHER
- ** APPLE CARPLAY/ ANDROID AUTO
- ** REMOTE START
- ** HEATED STEERING WHEEL
- ** HEATED SEATS
- ** HEATED/COOLED SEATS
- ** BACKUP CAMERA
- ** REAR PARK ASSIST
- ** BLUETOOTH
- Preferred Equipment Group 4SB
- X31 Off-Road Package
- HD Radio
- Radio: AM/FM w/Premium GMC Infotainment System
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Power Windows w/Driver Express Up/Down
- Remote Vehicle Starter System
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Electrical Lock Control Steering Column
- Keyless Open & Start
- Power Door Locks
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- 2-Speed Active Transfer Case
- LED Cargo Area Lighting
- Painted Black Surround Grille
- Rear Wheelhouse Liners
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- 2 USB Ports
- 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
- Floor-Mounted Center Console
- Front Prem Floor Liners w/Removable Carpet Insert
- GMC Connected Access Capable
- HD Rear Vision Camera
- OnStar & GMC Connected Services Capable
- Rear Prem Floor Liners w/Removable Carpet Insert
- Wireless Phone Projection
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Front Bucket Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Heated Driver & Front Outboard Passenger Seats
- Integrated Trailer Brake Controller
- Deep-Tinted Glass
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
Detailed Specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Front beverage holders
- Front dual zone A/C
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- 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 wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 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: Android Auto/Apple CarPlay
- Steering wheel mounted audio controls
- 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
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch receiver
- Trailer sway control
- Turn signal indicator mirrors
- 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")
- 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
- Compass
- Delay-off headlights
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- 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
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- 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 - 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).
While we make every effort to ensure the data listed here is correct, there may be instances where some of the factory rebates, incentives, options or vehicle features may be listed incorrectly as we get data from multiple data sources. PLEASE MAKE SURE to confirm the details of this vehicle with the dealer to ensure its accuracy. Dealer cannot be held liable for data that is listed incorrectly. * MSRP is the Manufacturer's Suggested Retail Price (MSRP) of the vehicle. It does not include any tax, title, license or documentary service fee of $367.70. Consult the dealer for fee, payments and complete details. * Offers, incentives, discounts, or financing are subject to expiration and other restrictions. See dealer for qualifications and complete details. * In transit means that vehicles have been built but have not yet arrived at our dealership; images shown may not necessarily represent exact vehicles in transit to your dealership. See your dealer for complete details. Consumers, please be aware that the above advertised price assumes you are purchasing the vehicle from the Kunes Auto Group dealership where it is listed as being offered for sale. If the vehicle is transferred from one location to another, a transfer fee for this transportation of $300 will be added to the purchase transaction. If you would like to purchase such vehicle without paying a transfer fee, you can take delivery of the vehicle at the store it is listed as being sold from and avoid the additional transfer fee. Shipping fees vary depending on location, contact dealer for shipping details and costs.
*Any MPG listed is based on model year EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid only) and other factors.
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