Terms and limitations apply. See onstar.com or dealer for details.
May require additional optional equipment
6-speaker audio system:
Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
8" diagonal Premium GMC Infotainment System:
Multi-touch display and AM/FM/SiriusXM1(trial subscription), stereo
HD Radio capability
Bluetooth®2 streaming audio for music and select phones
Apple CarPlay™ capability for compatible phones3
Android Auto™ capability for compatible phones4
Use, control and manage select smartphone apps through the Infotainment system
Voice-activated technology for phone
USB port(s)5 to play stored audio files through your vehicle's audio system
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
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 Radio
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
May require additional optional equipment
Wireless Phone Projection for Apple Carplay and Android Auto
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
40/20/40 split-bench front seat with under-seat storage:
Seating for up to 3
Driver and front passenger seatbacks recline
Head restraints at the outboard seating positions
Center seatback that doubles as a fold-down armrest with storage
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 carpeted floor mats:
Helps protect your interior from road debris and the elements
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 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 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 carpeted floor mats:
Helps protect your interior from road debris and the elements
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 Direct Injection with Variable Valve Timing 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
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
Four wheel drive
Fully boxed frame:
Hydroformed front section
High-strength steel
Heavy-Duty Air Filter:
Thick construction helps to trap more dirt before it can enter the air intake
Heavy-duty 720 cold-cranking amps battery:
80 Amp-hr
Maintenance-free with rundown protection and retained accessory power
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:
Shows you a high-resolution digital image of the area directly behind your vehicle when you're in Reverse at low speeds1
This may help you park and avoid nearby objects
Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly
May require additional optional equipment
Hitch Guidance:
Displays a guideline on the Rear Vision Camera view when you're in Reverse to help line up your hitch to your trailer1
When driving, Hitch Guidance allows you to briefly check your trailer using the Rear Vision Camera view
Hitch Guidance with Hitch View:
Displays a guideline on the Rear Vision Camera view when you're in Reverse to help line up your hitch to your trailer and offers a close-up Hitch View1
When driving, Hitch Guidance with Hitch View allows you to briefly check your trailer connection using the Rear Vision Camera view
When Hitch View is in use, automatically applies electric parking brake when shifting to Park
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 equipped
An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
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
Dealer Notes
Summit White 2021 GMC Sierra 2500HD SLT 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather.
KBB.com Consumer Reviews
Overall4Out of 5
Best Truck Ever!
By Jayย |ย on Sunday, January 17, 2021
5.0
Love it! Best Truck Ever!โฆ
sucks gas and sucks on wind noise. gonna trade in
By no nicknameย |ย on Friday, December 25, 2020
3.0
been to two dealerships both say crosswind noise is normal. never had noise on my 2016 1500. my mistake buying an x31 package I`m 63 and use a step ladder sometimes to get in the bed. mpg is also my mistake, I`m used to my 5.3. so don`t expect good mpg. other than that I like it.โฆ