Terms and limitations apply. See onstar.com or dealer for details.
Terms and limitations apply. See onstar.com or dealer for details.
May require additional optional equipment
8" diagonal Premium GMC Infotainment System with Navigation:
Multi-touch display, AM/FM/SiriusXM1 (trial subscription), stereo and includes Navigation2
HD Radio capability
Bluetooth®3streaming audio for music and select phones
Apple CarPlay™ capability for compatible phones4
Android Auto™ capability for compatible phones5
Use, control and manage select smartphone apps through the Infotainment system
Voice-activated technology for phone
USB port(s)6 to play stored audio files through your vehicle's audio system
With greater memory
May require additional optional equipment
Bluetooth®:
Pair your compatible mobile phone to your vehicle's infotainment system1
Place and receive hands-free phone calls
Store your phone's contact list in the system to place an outgoing call quickly using the touch-screen display or voice command system
With streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
Bose® Premium Sound System:
7-speakers with Richbass® woofer
Bose® is renowned for expert sound engineering and high-quality audio and with premium speakers positioned throughout the cabin, you'll get rich, concert-like sound
May require additional optional equipment
HD Radio:
Provides consumers with additional channels known as HD2, HD3 and HD4
Transmits Program Service Data, such as song titles and artist information
SiriusXM® with 360L trial subscription:
Enjoy a 3-month trial subscription to the SiriusXM All Access package and enjoy the full SiriusXM with 360L experience1
This vehicle is equipped with SiriusXM with 360L— a greater variety of SiriusXM content, a more personalized experience and easier navigation. For the full SiriusXM with 360L experience, a SiriusXM All Access Package is required. If you subscribe to a lower package, certain features of 360L will not be available
With the All Access Package, you can also enjoy your favorites anywhere life takes you, with the SiriusXM app, online and at home on compatible connected devices
May require additional optional equipment. Some features, including streaming content and listening recommendations require GM connected vehicle services
Makes it convenient for powering laptops, phone chargers and other electronic devices
May require additional optional equipment
8" diagonal, digital Driver Information Center:
Multiple page views may include fuel data, audio information, trailer settings, phone features, certain active safety features status (if equipped) and navigation1 route guidance
Includes driver personalization, warning messages and vehicle information
May require additional optional equipment
Assist handles:
Front A-pillar mounted for Driver and Passenger
Rear B-pillar mounted
Carpeted floor covering:
Color-keyed to match the interior
Compass:
Located in instrument cluster
Cruise control:
Maintains a selected speed while driving
Automatically disengages when the vehicle's traction control system needs to limit wheelspin on slippery surfaces or when the StabiliTrak® stability control system detects an oncoming skid
Set and resume speed functions
Steering-wheel mounted controls to easily maintain and manage cruising speed
Driver memory:
Recalls 2 driver presets for 10-way power seat and outside mirrors
May require additional optional equipment
Dual-zone automatic climate control:
Automatically maintains the selected temperatures for both the driver and front passenger
Allows individual climate settings for both driver and front passenger
Driver and front passenger can choose a temperature up to 30 degrees difference
May require additional optional equipment
Front bucket seats:
May require additional optional equipment
Front carpeted floor mats:
Helps protect your interior from road debris and the elements
Includes reconfigurable feature with cupholders, cell phone storage, power cord management and file holder capacity
May require additional optional equipment
GMC Connected Access capable:
Subject to terms. See onstar.com or dealer for details.
May require additional optional equipment
Head-Up Display:
Projects vehicle information onto the windshield low in the driver's line of sight to help you keep your eyes on the road
Multi-color 15" Diagonal Head-Up Display
Can select key vehicle information to display including an off-road inclinometer
Adjustable vertical position and brightness of the display
May require additional optional equipment
Heated driver and front outboard passenger seats:
Separate buttons on the climate control panel allow you to choose from 3 levels of warmth
At the touch of a button you can warm the cushions and seatbacks with multilevel temperature control
Individually controlled
Seats can be programmed to automatically warm up when it's cold out
May require additional optional equipment
Heated rear outboard seats:
At the touch of a button you can warm the cushions
Provide comfort in cold weather for passengers in the rear outboard seating positions
Passengers have their own controls to set the temperature
May require additional optional equipment
Heated steering wheel:
With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold day
May require additional optional equipment
Keyless Open and Start:
With the Keyless Entry fob in your possession, conveniently locks and unlocks your car's doors without having to use the key fob
With the vehicle in Park or Neutral, press the brake pedal and then press the engine start/stop button to start the engine; the green indicator on the button will illuminate
Shift to Park and press the engine start/stop button to turn off the engine
May require additional optional equipment
Leather-wrapped steering wheel:
May require additional optional equipment
Manual tilt and telescoping steering column:
Allows the driver to adjust the steering wheel up or down, and the steering column forward or back
May require additional optional equipment
Outside temperature display:
Located in infotainment display
Power door locks:
Programmable
Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob (when equipped)
Power sliding rear window with rear defogger:
Helps to keep your rear view clear of fog or frost
Utilizes a warming grid to remove fog or frost from the rear window
The window switch is conveniently located in the overhead console for easy 1-touch operation
May require additional optional equipment
Power windows with driver and front passenger express-up/down:
Quickly raises the window or lowers it with the touch of a button
If obstruction is detected, the anti-pinch feature will auto-reverse
Power windows with driver express-up/down:
Quickly raises the window or lowers it with the touch of a button
If an obstruction is detected, the anti-pinch feature will auto-reverse
Power windows with rear express-down:
May require additional optional equipment
Rear Camera Mirror:
Allows you to use either a traditional inside rearview mirror or a rearview camera mirror display that provides a wide, less obstructed view1
Assists when driving, changing lanes, and checking for vehicles and traffic conditions
May require additional optional equipment
Rear Seat Reminder:
Helps to remind the driver to check the back seat(s) before leaving the vehicle1
Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is on
Under certain conditions, once the vehicle is switched off, designed to sound 5 audible chimes and display a visual message within the Driver Information Center
Activates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
Rear air vents:
Provides cabin comfort for rear occupants
Rear carpeted floor mats:
Helps protect your interior from road debris and the elements
When properly equipped; includes weight of vehicle, passengers, cargo and equipment
220-amp alternator:
May require additional optional equipment
3.73 rear axle ratio:
Requires a gas engine
4-wheel antilock disc brakes:
Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
DuraLife™ brake rotors feature a hardened surface to reduce corrosion and provide quieter braking with less vibration. DuraLife™ rotors are hardened and strengthened during the manufacturing process
Brake system features a corrosion-fighting process called Ferritic Nitro-Carburizing (FNC) which can double rotor life expectancy and reduce or minimize rust over non-FNC coated rotors
Tow/Haul mode and Auto Grade Braking that reduce the amount of conventional braking needed while towing or traveling downhill to help reduce brake wear
6.6L V8 Gas engine:
401 hp [299 kW] @ 5200 rpm
464 lb-ft of torque [629 N-m] @ 4000 rpm
3.73 rear axle ratio
Paired with a 6-speed automatic transmission
Capless fuel fill
Air filtration monitoring:
Alerts the driver when the engine air filter needs replacement
Automatic locking rear differential:
When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added traction
The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm
May require additional optional equipment
Autotrac® 2-speed transfer case with push button controls:
4-button control 2WD, Auto, 4WD, 4WD LO
2WD High for most on-road and highway situations
4WD High for snowy or wet roads when added traction is needed
4WD Low for deep sand, mud or snow to provide maximum torque to all 4 wheels
When in AUTO mode, remains in 2WD mode until the system detects wheel slippage
Automatically engages 4WD until traction is regained
Neutral
ONLY used for towing vehicle (Dinghy tow & Dolly tow capability)- allows vehicle to roll freely
May require additional optional equipment
Auxiliary 730 cold-cranking amps battery:
Helps boost cold-weather starting power
Can supply electrical power to additional equipment, such as a trailer or slide-in camper, to reserve the main battery's cranking power
May require additional optional equipment
Brake pad wear indicator
Capless fuel fill:
Prevents paint scratches that can result from a tethered fuel cap
Creates a tight seal around the fuel-pump nozzle when the nozzle is fully inserted
Requires gasoline engine
Chrome vertical recovery hooks:
Two front frame-mounted1
Digital Variable Steering Assist:
This system automatically adjusts steering based on speed, road conditions, and other inputs to help reduce driver fatigue
External auxiliary transmission oil cooler:
Heavy-duty air-to-oil cooler
Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
May require additional optional equipment
External engine oil cooler:
Heavy-duty air-to-oil cooler
Helps extend engine oil life under heavy loads
Fully boxed frame:
Hydroformed front section
High-strength steel
Heavy-duty 720 cold-cranking amps battery:
80 Amp-hr
Maintenance-free with rundown protection and retained accessory power
May require additional optional equipment
High-capacity air filter:
Thick construction helps to trap more dirt before it can enter the air intake
May require additional optional equipment
Hill Descent Control:
Uses antilock braking to help provide a smooth, controlled descent
Helps driver maintain control of the vehicle without depressing the brake pedal
Activates by pushing a button below the instrument panel
May require additional optional equipment
In-vehicle Trailering App:
Checklist1
Trailer light sequencing
Trailer maintenance reminders
Trailer security alerts
Trailer mileage
Tow/haul reminder
Trailer electrical diagnostics
Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed
May require additional optional equipment
Integrated trailer brake controller:
Integrated with the antilock brake system (ABS)
Helps provide measured brake force signaling to electric-controlled trailer brake systems
Trailer gain and output are displayed in the Driver Information Center
Off-Road suspension:
May require additional optional equipment
Pickup bed:
Roll-formed high-strength steel
Skid plates:
Help protect the front underbody, oil pan, differential case and transfer case
Dual-stage frontal airbags for driver and front outboard passenger1
Seat-mounted side-impact airbags for driver and front outboard passenger1
Head-curtain airbags for outboard seating positions1
Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
Bed View Camera:
Camera in the Center High Mount Stop Lamp (CHMSL) provides an elevated view of the truck bed from the back of the cab1
Allows driver to see inside the cargo bed on the infotainment display to help with 5th wheel or gooseneck hitching and to check cargo
Includes 2 Trailer Camera Provisions
May require additional optional equipment
Following Distance Indicator:
Can provide you with the following gap time (or headway) to a moving vehicle you are detected to be following to help you know if you are following much too closely1
May require additional optional equipment
Forward Collision Alert:
Can alert you when it detects that a front-end collision is imminent with a vehicle that you are following1
It also can alert you if you are following a detected vehicle much too closely
May require additional optional equipment
Front and Rear Park Assist:
Can provide distance alerts to nearby detected objects to help you park and avoid objects at low speeds1
May require additional optional equipment
HD Surround Vision:
Provides you with a high resolution birds-eye view of the scene around the vehicle on the infotainment screen1
Helps the driver park and avoid nearby objects at low speeds
Additional views can be selected
Includes 2 Trailer Camera Provisions
Requires Auxiliary Trailer Camera if one of the following camera views is desired: Transparent Trailer, Rear Trailer View or Inside Trailer View
May require additional optional equipment
Hitch Guidance:
Uses the Rear Vision Camera display to provide you with a guideline to help align your vehicle with a trailer1
Provides a camera view to briefly check the trailer when driving
Hitch Guidance with Hitch View:
Uses the Rear Vision Camera display to provide you with a guideline to help align your vehicle with a trailer1
Additional camera zoomed-in view
When Hitch View is in use, automatically applies parking brake when shifting from Reverse to Park
Also provides a camera view to briefly check the trailer when driving
May require additional optional equipment
Lane Change Alert with Side Blind Zone Alert:
Can help you avoid lane change crashes by providing side-mirror visual alerts when a moving vehicle is detected rapidly approaching or is in a side blind zone1
May require additional optional equipment
Lane Departure Warning:
Can provide alerts to help you avoid crashes due to unintentionally drifting out of your lane when your turn signal is not activated1
May require additional optional equipment
OnStar® & GMC Connected Services capable:
Terms and limitations apply. See onstar.com or dealer for details.
Rear Cross Traffic Alert:
When in Reverse, can alert you to detected left- or right-cross traffic behind you (e.g., when backing out of a crowded parking space or driveway with side obstructions)1
Displays warning triangles with left/right indicator arrows in the Rear Vision Camera screen
System issues audible beeps or directional pulses if equipped with the Safety Alert Seat
May require additional optional equipment
Safety Alert Seat:
Provides you the option of getting driver seat-bottom pulses instead of beeps for crash avoidance alerts1
May require additional optional equipment
Teen Driver:
This configurable feature lets you activate customizable vehicle settings associated with a key fob to help encourage better driving behavior1
It can limit certain vehicle features, and automatically turns on certain safety systems if vehicle is equipped1
An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver1
Tire Pressure Monitoring System:
Monitors the pressure in each tire and alerts you if there is a low-pressure condition in one or more of the tires1
When traveling at speeds less than 50 MPH, the system can alert you if it detects that a front-end collision situation is imminent with a vehicle ahead you are following1
It can also help reduce the collision's severity by automatically applying hard, emergency braking if you have not already or by enhancing driver hard braking
The system may even help avoid the collision at very low speeds
May require additional optional equipment
StabiliTrak, electronic stability control system with traction control:
Automatically helps enhance control, particularly during emergency maneuvers, by adjusting the brakes and engine torque to help you stay on your intended path
Activates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travelling
Includes Traction Control that detects wheel slippage and applies brake pressure and/or reduces engine power to help the driver maintain control when accelerating on wet or snow-covered roads
Includes Brake Assist which detects rapid brake pedal applications due to emergency braking situations and provides additional braking via the Antilock Brake System (ABS) module
Recent Arrival! Odometer is 5380 miles below market average!
KBB.com Consumer Reviews
Overall3.8Out of 5
Transmission trash
By Jason | on Monday, April 07, 2025
2.0
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…
Fantastic truck
By Jjj | on Sunday, November 07, 2021
5.0
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!…
Don't judge a truck by the appearance
By jmil | on Wednesday, May 11, 2022
3.0
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).…