New 2022 GMC Sierra 1500 Crew Cab Short Box 4-Wheel Drive AT4
- Hiley Special Price $70,745
- MSRP $70,745
See Important Disclosures Here
Manufacturer Photos
May not represent actual vehicle (options, colors, trim and body style may vary).
Pricing Information
- MSRP $70,745
Specifications
- Interior Jet Black With Kalahari Accents
- Mileage 5
- Stock Number G28777
- VIN 1GTPUEEL4NZ526122
- Exterior Desert Sand Metallic
- Engine EcoTec3 6.2L V8
- Drive Wheels 4WD
- Location Hiley Buick GMC of Fort Worth
Vehicle At A Glance
- Fuel Economy * 15 city / 20 hwy
- Mileage 5 MILES
- Transmission Automatic
- Exterior Color Desert Sand Metallic
- Interior Color Jet Black With Kalahari Accents
- Engine Data EcoTec3 6.2L V8
Vehicle Description
10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather. With great everyday low internet pricing available why wait? We price our car's and truck's at very competitive market pricing to make your shopping easy for you. No need for the back and forth, just great pricing and great customer service every time.
4D Crew Cab 4WD EcoTec3 6.2L V8
2022 GMC Sierra 1500 AT4
New Car Pricing does not include dealer ads.
Specifications
Entertainment
- Wireless phone projection, for Apple CarPlay and Android Auto
- Audio System, 13.4 " diagonal Premium GMC Infotainment System with Google built in, includes color touch-screen, multi-touch display, AM/FM stereo Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (STD)
- Steering wheel audio controls
- Bluetooth for phone connectivity to vehicle infotainment system
- Bose Sound System, premium 7-speaker system with Richbass woofer
- SiriusXM with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the Platinum Plan for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the Platinum Plan you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.)
- Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Exterior
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Glass, deep-tinted
- Grille (Black chrome header and grille insert bars with gloss black accents.)
- LPO, AT4 high clearance step,(dealer-installed)
- Wipers, front rain-sensing
- Wheelhouse liners, rear (Certain vehicles built prior to 3-21-2022 and after 4-7-2022 will include rear wheelhouse liners. Certain vehicles built on 3-21-2022 thru 4-7-2022 will be forced to include (RFZ) Not Equipped with Rear Wheelhouse liners, which removes Rear Wheelhouse liners. See dealer for details or the window label for the features on a specific vehicle. Deleted with (PCP) AT4 CarbonPro Edition.)
- Wheels, 20" x 9" (50.8 cm x 22.9 cm) machined aluminum,with Carbon Grey Metallic accents
- Tires, 275/60R20SL all-terrain, blackwall,(Includes (QAQ) spare tire.)
- Window, power, rear sliding with rear defogger
- Bed Liner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Deleted with (PCP) AT4 CarbonPro Edition. Crew Cab models are available with Ship Thru codes (VBE), (VCO), (VDT), (VYC) or (VYS).)
- Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
- Headlamps, LED projectors with Fade-on/Fade-off animation, LED turn signals and Daytime Running Lamps
- CornerStep, rear bumper
- Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
- Door handles, body-color
- Desert Sand Metallic
- Mirror caps, high gloss Black
- Tailgate, GMC MultiPro Tailgate with six functional load/access features
- Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
- Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
- IntelliBeam, automatic high beam on/off (Included and only available with (PDI) GMC Pro Safety.)
- Lighting, perimeter
- LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
- Bumper, rear body-color with corner steps
- Sunroof, power
- Bumper, front, body-color lower
- Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animation
- Tire, spare 255/80R17SL all-season, blackwall
- License plate kit, front
- Tailgate and bed rail protection caps, top
- Fog lamps, LED
Interior
- Brake lining wear indicator
- Adaptive Cruise Control
- Driver memory recalls driver "presets" for power driver seat and outside mirrors
- Remote vehicle starter system
- Not Equipped with Steering Column Lock, see dealer for details,(Certain vehicles built on or after 4-4-2022 will be forced to include (R7N) Not Equipped with Steering Column Lock, which removes Steering Column Lock. See dealer for details.)
- Air vents, rear
- Door locks, power
- Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
- Seat adjuster, passenger 10-way power including lumbar
- Steering wheel, heated (Vehicles built after 3-27-2022, include heated steering wheel. Certain vehicles built through 3-27-2022 may be forced to include (00G) Not Equipped with Heated Steering Wheel, which removes the heated steering wheel. See dealer for details or the window label for the features on a specific vehicle.)
- Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
- Steering column, power rake and telescoping
- Not Equipped with Driver and Front Passenger Ventilated Seat Cushion Blower Motor, see dealer for details,(Certain vehicles built on or after 4-4-2022 with (KQV) Ventilated driver and front passenger seats will be forced to include (04O) Not Equipped with Driver and Front Passenger Ventilated Seat Cushion Blower Motor, which removes driver and front passenger ventilated seat cushion blower motor. Vehicles equipped with (04O) Not equipped Driver and Front Passenger Ventilated Seat Cushion Blower Motor will be eligible for later dealer retrofit to enable functionality. See the window label for the features on a specific vehicle.)
- Multicolor 15" Diagonal Head-Up Display
- Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
- In-Vehicle Trailering App
- Premium Floor Liners with removable carpet insert, rear
- Seats, ventilated driver and front passenger (Vehicles built prior to 3-14-2022 and after 4-24-2022 will include (KQV) ventilated front seats. Certain vehicles built on or after 3-14-2022 through 4-24-2022 will be forced to include (00V) Not Equipped with Heated or Ventilated Front Seats, which removes ventilated driver and front passenger seats. Feature will not function on certain models without later dealer retrofit. See dealer for details or the window label for the features on a specific vehicle.)
- Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
- Defogger, rear-window electric
- Compass, located in instrument cluster
- Keyless Open and Start includes remote keyless entry
- Seats, front bucket with center console (STD)
- GMC Premium information Display-13.4" diagonal Multicolor I touch screen
- Window, power front, passenger express up/down
- Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
- Seat adjuster, driver 10-way power including lumbar
- Premium Floor Liners with removable carpet insert, front
- Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
- Windows, power front, drivers express up/down
- Universal Home Remote
- Wireless Charging
- Windows, power rear, express down
- Exterior Temperature Display, located in radio display
- Seats, heated second row outboard seats (Vehicles built prior to 3-14-2022 and after 4-24-2022 will include heated second row outboard seats. Certain vehicles built on or after 3-14-2022 Through 4-24-2022 will be forced to include (00R) Not Equipped with Heated Rear Outboard Seats, which removes heated second row outboard seats. Feature will not function on certain models without later dealer retrofit. See dealer for details or the window label for the features on a specific vehicle.)
- Jet Black with Kalahari accents, Perforated leather front seat trim
- Rear Camera Mirror, inside rearview auto-dimming,with full camera display
- Air conditioning, dual-zone automatic climate control
- Steering wheel, leather-wrapped
- USB Ports, 2, Charge/Data ports located inside center console
- 3 years of GMC Connected Services (Includes from time of new vehicle purchase. Connected services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. Does not include emergency or security services. See onstar.com for details and limitations.)
- Floor covering, color-keyed carpeting
- Theft-deterrent system, unauthorized entry
- GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
- Seating, heated driver and front outboard passenger (Vehicles built prior to 3-14-2022 and after 4-24-2022 will include driver and front passenger heated seats. Certain vehicles built on or after 3-14-2022 through 4-24-2022 will be forced to include (00V) Not Equipped with Heated or Ventilated Front Seats, which removes driver and front passenger heated seats. Vehicles equipped with (00V) Not Equipped with Heated or Ventilated Front Seats will be eligible for later dealer retrofit to enable functionality, see dealer for details.)
- USB Ports, 2 (first row) located on console
- USB ports, type-C, (2) charge-only, rear
Mechanical
- Emissions, Federal requirements
- Exhaust, aluminized stainless-steel muffler and tailpipe
- Push Button Start
- Steering, Electric Power Steering (EPS) assist, rack-and-pinion
- Transmission, 10-speed automatic with Electronic Precision shift, electronically controlled,with overdrive, and tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade Braking
- Pickup bed
- Air filter, heavy-duty
- Trailer brake controller, integrated
- Capless Fuel Fill
- Suspension, Off-Road with 2" factory installed lift and monotube shocks
- Electronic Precision Shift and steering column paddle shifters
- Frame, fully-boxed, hydroformed front section
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- Cooling, auxiliary external transmission oil cooler
- Engine, 6.2L EcoTec3 V8,(420 hp [313 kW] @ 5600 rpm, 460 lb-ft of torque [624 Nm] @ 4100 rpm); featuring Dynamic Fuel Management
- GVWR, 7100 lbs. (3221 kg) (Requires Crew Cab 4WD model and (LM2) Duramax 3.0L Turbo-Diesel I6 engine.) (STD)
- Skid Plates
- Cooling, external engine oil cooler
- Cargo tie downs (12), fixed
- Rear axle, 3.23 ratio
- Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
- Recovery hooks, Red
- Automatic Stop/Start
- Exhaust, dual system (Includes chrome exhaust tips.)
- Battery, heavy-duty 850 cold-cranking amps/95 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
- Four wheel drive
- Hill Descent Control
- Auto-locking rear differential
Safety
- Rear Seat Reminder
- Front and Rear Park Assist, ultrasonic,(Certain vehicles may be forced to include (00Z) Not Equipped with Front and Rear Park Assist, which removes Front and Rear Park Assist. See dealer for details or the window label for the features on a specific vehicle.
- Automatic Emergency Braking (Included and only available with (PDI) GMC Pro Safety.)
- Daytime Running Lamps, LED signature lighting
- Buckle to Drive (Included and only available with (PDI) GMC Pro Safety.)
- Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
- Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)
- Trailer Side Blind Zone Alert
- Bed View Camera,camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera Provisions
- Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
- OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Seat Belt Adjustable Guide Loops, front row only
- Trailer Camera Provisions and trailer viewing software
- HD Surround Vision,provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer.
- Not Equipped with Front and Rear Park Assist, see dealer for details,(Certain vehicles may be forced to include (00Z) Not Equipped with Front and Rear Park Assist, which removes Front and Rear Park Assist. See dealer for details or the window label for the features on a specific vehicle.)
- Front Pedestrian Braking (Included and only available with (PDI) GMC Pro Safety.)
- Lane Keep Assist with Lane Departure Warning (Included and only available with (PDI) GMC Pro Safety.)
- Tire Pressure Monitor System, auto learn includes Tire Fill Alert (does not apply to spare tire)
- Forward Collision Alert (Included and only available with (PDI) GMC Pro Safety.)
- Hitch Guidance
- Rear Pedestrian Alert
- Rear Cross Traffic Braking
- Safety Alert Seat (Included and only available with (PDI) GMC Pro Safety.)
Warranty
- Warranty: <<< Preliminary 2022 Warranty >>>
- Drivetrain: 5 Years/60,000 Miles,HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
- Corrosion: 3 Years/36,000 Miles,Rust-Through,6 Years/100,000 Miles
- Roadside Assistance: 5 Years/60,000 Miles,HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
- Maintenance: 1 Year/1 Visit
- Basic: 3 Years/36,000 Miles
Featured Equipment
-
10-Way Power Driver Seat Adjuster w/Lumbar
**
-
10-Way Power Passenger Seat Adjuster w/Lumbar
**
-
120-Volt Bed Mounted Power Outlet
**
-
120-Volt Instrument Panel Power Outlet
**
-
170 Amp Alternator
**
-
18" x 8.5" Machined Aluminum Wheels
**
-
2 Charge/Data USB Ports Inside Center Console
**
-
2 Type-C Charge-Only Rear USB Ports
**
-
2 USB Ports
**
-
220 Amp Alternator
**
-
3.23 Rear Axle Ratio
**
-
4-Wheel Disc Brakes
**
-
7 Speakers
**
-
ABS brakes
**
-
AM/FM radio: SiriusXM with 360L
**
-
AT4 High Clearance Step (LPO)
**
-
AT4 Preferred Package
**
-
AT4 Premium Package
**
-
Adaptive Cruise Control
**
-
Air Conditioning
**
-
Alloy wheels
**
-
Apple CarPlay/Android Auto
**
-
Auto High-beam Headlights
**
-
Auto-Locking Rear Differential
**
-
Auto-dimming Rear-View mirror
**
-
Auto-dimming door mirrors
**
-
Automatic Emergency Braking
**
-
Automatic temperature control
**
-
Auxiliary External Transmission Oil Cooler
**
-
Bed View Camera
**
-
Black Chrome Header & Grille Insert Bars
**
-
Block heater
**
-
Brake assist
**
-
Buckle to Drive
**
-
Bumpers: body-color
**
-
Color-Keyed Carpeting Floor Covering
**
-
Compass
**
-
Deep-Tinted Glass
**
-
Delay-off headlights
**
-
Driver Memory
**
-
Driver door bin
**
-
Driver vanity mirror
**
-
Dual front impact airbags
**
-
Dual front side impact airbags
**
-
Electric Rear-Window Defogger
**
-
Electrical Steering Column Lock
**
-
Electronic Stability Control
**
-
Engine Block Heater
**
-
External Engine Oil Cooling
**
-
Floor-Mounted Center Console
**
-
Following Distance Indicator
**
-
Forward Collision Alert
**
-
Front Bucket Seats
**
-
Front Center Armrest
**
-
Front License Plate Kit
**
-
Front Pedestrian Braking
**
-
Front Prem Floor Liners w/Removable Carpet Insert
**
-
Front Rainsensing Wipers
**
-
Front anti-roll bar
**
-
Front dual zone A/C
**
-
Front fog lights
**
-
Front reading lights
**
-
Front wheel independent suspension
**
-
Fully automatic headlights
**
-
GMC Connected Access Capable
**
-
GMC Pro Safety
**
-
HD Rear Vision Camera
**
-
HD Surround Vision
**
-
Heated 2nd Row Outboard Seats
**
-
Heated Driver & Front Outboard Passenger Seating
**
-
Heated Steering Wheel
**
-
Heated door mirrors
**
-
Heated front seats
**
-
Heated rear seats
**
-
Heated steering wheel
**
-
Heavy-Duty Air Filter
**
-
Hill Descent Control
**
-
Hitch Guidance
**
-
Hitch Guidance w/Hitch View
**
-
Illuminated entry
**
-
In-Vehicle Trailering App
**
-
Integrated Trailer Brake Controller
**
-
IntelliBeam Automatic High Beam On/Off
**
-
Keyless Open & Start
**
-
LED Cargo Area Lighting
**
-
Lane Keep Assist w/Lane Departure Warning
**
-
Low tire pressure warning
**
-
Memory seat
**
-
Multicolor 15" Diagonal Head-Up Display
**
-
Navigation System
**
-
Not Equip w/Heat & Vent Seat Cushion Blower Motor
**
-
Not Equipped w/Front & Rear Park Assist
**
-
Not Equipped w/Steering Column Lock
**
-
Occupant sensing airbag
**
-
Off-Road Suspension
**
-
OnStar & GMC Connected Services Capable
**
-
Outside temperature display
**
-
Overhead airbag
**
-
Overhead console
**
-
Panic alarm
**
-
Passenger door bin
**
-
Passenger vanity mirror
**
-
Pedestrian detection: prevention
**
-
Perforated Front Leather Seat Trim
**
-
Perimeter Lighting
**
-
Power Door Locks
**
-
Power Front Passenger Windows w/Express Up/Down
**
-
Power Front Windows w/Driver Express Up/Down
**
-
Power Rake & Telescoping Steering Column
**
-
Power Rear Windows w/Express Down
**
-
Power Sliding Rear Window w/Rear Defogger
**
-
Power Sunroof
**
-
Power door mirrors
**
-
Power driver seat
**
-
Power passenger seat
**
-
Power steering
**
-
Power windows
**
-
Preferred Equipment Group 4SB
**
-
Premium Bose 7-Speaker Sound System
**
-
Premium audio system: Premium GMC Infotainment System
**
-
Push Button Start
**
-
Radio data system
**
-
Radio: Premium GMC Infotainment Audio System
**
-
Rain sensing wipers
**
-
Rear Camera Mirror
**
-
Rear Cross Traffic Braking
**
-
Rear Pedestrian Detection
**
-
Rear Prem Floor Liners w/Removable Carpet Insert
**
-
Rear Wheelhouse Liners
**
-
Rear reading lights
**
-
Rear seat center armrest
**
-
Rear step bumper
**
-
Rear window defroster
**
-
Red Recovery Hooks
**
-
Remote Vehicle Starter System
**
-
Remote keyless entry
**
-
Safety Alert Seat
**
-
Security system
**
-
Sierra Safety Plus Package
**
-
SiriusXM w/360L
**
-
Speed control
**
-
Speed-sensing steering
**
-
Split folding rear seat
**
-
Spray-On Pickup Bed Liner w/AT4 Logo
**
-
Steering Wheel Audio Controls
**
-
Steering wheel mounted audio controls
**
-
Tachometer
**
-
Technology Package
**
-
Telescoping steering wheel
**
Accessories
Shop our entire portfolio of GMC Accessories and make your vehicle one of a kind.
Whether you’re looking for Premium All-Weather Floor Liners and Floor Mats to help protect your interior, 22” Wheels and Black GMC Emblems for personal style or a set of Cross Rails to expand your cargo options, we’ve got you covered.
Choose from the only accessories Designed, Engineered, Tested and Backed by GMC as well as Associated Accessories from our partners at Thule, Kicker and others to personalize and enhance your vehicle.
Similar Vehicles
- Hiley Special Price
- $70,745
- MSRP
- $70,745
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- G28778
- Engine Data
- EcoTec3 6.2L V8
- Exterior Color
- Quicksilver Metallic
- Hiley Special Price
- $70,745
- MSRP
- $70,745
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- G28779
- Engine Data
- EcoTec3 6.2L V8
- Exterior Color
- Quicksilver Metallic
- Hiley Special Price
- $69,220
- MSRP
- $69,220
- Fuel Economy
- 22 city / 26 hwy
- Stock Number
- N/A
- Engine Data
- Engine: Duramax 3.0L, Turbo-Diesel, Inline 6 Cylinder
- Exterior Color
- Onyx Black
In-Transit See Details
3 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
- Hiley Special Price
- $70,250
- MSRP
- $70,250
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- N/A
- Engine Data
- 6.2L EcoTec3 V8 engine
- Exterior Color
- Summit White
In-Transit See Details
3 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
- Hiley Special Price
- $70,250
- MSRP
- $70,250
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- N/A
- Engine Data
- 6.2L EcoTec3 V8 engine
- Exterior Color
- Summit White
In-Transit See Details
3 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
- Hiley Special Price
- $70,260
- MSRP
- $70,260
- Fuel Economy
- N/A city / N/A hwy
- Stock Number
- N/A
- Engine Data
- 6.6L V8 Gas engine
- Exterior Color
- Onyx Black
In-Transit See Details
20 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
- Hiley Special Price
- $70,745
- MSRP
- $70,745
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- N/A
- Engine Data
- 6.2L EcoTec3 V8 engine
- Exterior Color
- Onyx Black
In-Transit See Details
3 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
- Hiley Special Price
- $70,745
- MSRP
- $70,745
- Fuel Economy
- 15 city / 20 hwy
- Stock Number
- N/A
- Engine Data
- 6.2L EcoTec3 V8 engine
- Exterior Color
- Onyx Black
In-Transit See Details
3 photos
Vehicle In Transit
This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.
All Vehicles
Tax, title, license, documentation fees (unless itemized above) and any dealer adds are extra. Not available with special finance or lease offers. Please contact dealer for details.
All Vehicles
MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the Fuel Economy portion of the EPAs website for details, including a MPG recalculation tool).
The features and options listed are for the new 2022 GMC Sierra 1500 and may not apply to this specific vehicle.