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
4.2" diagonal color Driver Information Center:
Includes driver personalization, warning messages and vehicle information
All-weather floor liners:
Feature a textured, anti-slip pattern that helps trap debris and water while providing carpet coverage
Include Brand logo
Provides coverage for first and second-row seating
Replaces factory floor mats
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 center console:
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
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
Inside rearview auto-dimming mirror:
Automatically dims the inside rearview mirror when it senses bright light from behind
When headlamp glare is no longer detected, the mirror returns to its normal state
Instrumentation:
6-gauge cluster
Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
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 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 window defogger:
Helps to keep your rear view clear of fog or frost
Utilizes a warming grid to help remove fog or frost from the rear window
Remote Start:
Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferences
Locks doors and turns on parking lamps while the engine is running
Activates the climate control system
Steering column lock control:
Helps prevent theft by allowing the steering wheel to operate only with the proper key fob
May require additional optional equipment
Steering-wheel mounted controls:
Allow the driver to easily operate the audio system and phone interface controls
May require additional optional equipment
Theft-deterrent unauthorized entry system:
Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitter
Helps deter unauthorized entry, helping to protect your vehicle
May require additional optional equipment
USB ports:
2-Instrument Panel with bench seat, also includes 1 SD card reader (first row)1 (models equipped with front bench seat)
2-Inside Console with bucket seats, also includes 1 SD card reader and auxiliary jack1 (models equipped with front bucket seats)
May require additional optional equipment
USB ports:
Second row includes 2 USB charging-only ports1
Universal Home Remote:
3-channel programmable
Conveniently activate compatible devices such as garage door openers, security systems, and home automation devices from inside your vehicle
May require additional optional equipment
Up-level rear seat with storage package:
Full-length bench seat
Seatback storage on left and right side
Center fold out armrest with 2 cupholders
Underseat storage (full cab width)
Ventilated driver and front passenger seats:
Separate buttons on the climate control panel allow you to choose from 3 levels of fan circulation
Individually controlled
Cooling feature includes both seatbacks and cushions
Includes heated front seating
May require additional optional equipment
Wireless Charging:
Uses induction technology for portable electronic devices1
Convenient charging location on the top of the center console
Device may require optional case for phones that are compatible
Customers can charge their smartphones while they drive without connecting to any cables
When properly equipped; includes weight of vehicle, passengers, cargo and equipment
170-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
Black vertical recovery hooks:
Two front frame-mounted1
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
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
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
Pickup bed:
Roll-formed high-strength steel
Suspension Package:
Designed to help maintain handling and ride quality while towing a trailer or carrying a load
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
HD Rear Vision Camera:
When in Reverse at low speeds, provides you a high resolution view of the scene directly behind the vehicle on the Infotainment screen to help you park and avoid nearby objects1
Dynamic guidelines laid over the display image assist in parking maneuvers by showing the vehicle's path
Tailgate must be in the raised position for the Rear Vision Camera to operate properly
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
OnStar® & GMC Connected Services capable:
Terms and limitations apply. See onstar.com or dealer for details.
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
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
Includes Trailer Sway Control
Hill Start Assist
Notes from the dealer
Red Quartz Tintcoat 2020 GMC Sierra 2500HD SLT 4WD 6-Speed Automatic 6.6L V8 6-Speed Automatic, 4WD, Jet Black Leather.
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).…