4.2 Diagonal Color Display Driver Info Center
Heavy-Duty 80 Amp Battery
Ultrasonic Front & Rear Park Assist
Memory seat
3.42 Axle Ratio
Preferred Equipment Group 4SB
Pickup box
AT4 High Clearance Step (LPO)
Power Windows
Remote keyless entry
20 Machined Aluminum Wheels
Auto-Dim Door Mirrors
Driver Alert Package I
Driver door bin
Intermittent Wipers
Lane Change Alert w/Side Blind Zone Alert
2 USB ports
Hitch Guidance w/Hitch View
Steering Wheel Audio Control
Power Seat
Power Rear Windows w/Express Down
Deep-Tinted Glass
Traction Control
Auto-Dimming Rear-View Mirror
10-Way Power Driver Seat Adjuster w/Lumbar
Rear seat center armrest
Delay-off headlights
Panic alarm
Rear Window Defroster
Electronic Stability
Forward Collision Alert
10-Way Power Passenger Seat Adjuster w/Lumbar
In-Vehicle Trailering System App
Power Windows w/Driver Express Up/Down
Power Sunroof
Driver Alert Package II
AT4 Preferred Package
ABS brakes
Heated door mirrors
12-Volt Rear Auxiliary Power Outlet
Steering Wheel Audio Controls
Multicolor 15 Diagonal Head-Up Display
Lane Departure Warning System
Automatic Headlights
120-Volt Instrument Panel Power Outlet
2 USB Ports (1st Row)
Dual 220-Amps Primary/170-Amps Aux Alternators
Technology Package
Rear reading lights
4G LTE Wi-Fi Hotspot Capable
Heated 2nd Row Outboard Seats
Front Prem Floor Liners w/Removable Carpet Insert
Manual Tilt-Wheel/Telescoping Steering Column
Wireless Phone Projection
Power Steering
HD REAR VISION CAMERA
Electric Rear-Window Defogger
Front reading lights
Front License Plate Kit
Radio: AM/FM w/Premium GMC Infotainment System
Exhaust Brake
Radio: Premium GMC Infotainment Sys w/Navigation
Trailer Tire Pressure Monitor Sensors
Speed control
AT4 Premium Plus Package
Perforated Leather-Appointed Front Seat Trim
Tachometer
Hill Descent Control
X31 Off-Road Package
LED Cargo Area Lighting
Front Side Air Bags
Rear step bumper
Compass
Painted Black Surround Grille
Heated Driver & Front Outboard Passenger Seats
6 Speakers
Compass located in instrument cluster
4-Wheel Disc Brakes
Safety Alert Seat
Bed View Camera w/2 Trailer Camera Provisions
Heated & Ventilated Front Bucket Seats
Rear Prem Floor Liners w/Removable Carpet Insert
Outside temperature display
Red Recovery Hooks
Power Sliding Rear Window w/Defogger
Occupant sensing airbag
Power passenger seat
GMC Connected Access Capable
4-Wheel Independent Susp.
Rear Wheelhouse Liners
Heated Front Seats
Air Conditioning
Front anti-roll bar
Heated rear seats
Automatic temperature control
Following Distance Indicator
Security System
driver memory
Remote Vehicle Starter System
Automatic Emergency Braking
Unauthorized Entry Theft-Deterrent System
Universal Home Remote
Wireless Charging
Power Door Locks
2-Speed Active Transfer Case
Integrated Trailer Brake Controller
Fold-Down Split Rear Seat
Heated Steering Wheel
Speed-sensing steering
Ventilated front seats
SiriusXM w/360L
Illuminated entry
2nd Row Dual USB Charge-Only Ports
Floor-Mounted Center Console
Spray-On Pickup Box Bed Liner w/AT4 Logo
Bose Premium 7 Speaker Sound System
Bumpers: body-color
Front center armrest
Telescoping steering wheel
Front fog lights
Overhead Console
Premium audio system: Premium GMC Infotainment System
HD SURROUND VISION
Passenger vanity mirror
6-Speaker Audio System Feature
LED Smoked Amber Roof Marker Lamps
Gooseneck/5th Wheel Prep Package
Power Front Passenger Windows w/Express Up/Down
IntelliBeam Automatic High Beam On/Off
AM/FM radio: SiriusXM with 360L
HD Radio
MULTIPRO AUDIO SYSTEM BY KICKER
Inside Rearview Auto-Dimming Rear Camera Mirror
Engine Block Heater
Power door mirrors
Overhead airbag
Front Bucket Seats
Voltmeter
Keyless Open & Start
Electrical Lock Control Steering Column
Gooseneck/5th Wheel Package
Apple CarPlay/Android Auto
Winter Grille Cover
Body Color Wheel Arch Moldings (LPO)
Tilt steering wheel
Turn signal mirrors
Rear Cross Traffic Alert
Front dual zone A/C
Brake assist
Low tire pressure warning
Passenger door bin
Off-Road Pkg
OnStar & GMC Connected Services Capable
120-Volt Bed Mounted Power Outlet
8 Multicolor Driver Information Center
Driver vanity mirror
Used 2021 GMCSierra 2500 HD AT4 Truck Crew Cab
*All prices plus government fees and taxes, any finance charges, any dealer document processing charge, any electronic filing charges, and any emission testing charge. Vehicles subject to prior sale. This is a group website that is created from multiple dealership feeds and inventory. Not responsible for feed/pricing errors. See individual dealerships for more information.
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Odometer
- 138,252 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT49PEYXMF187393
- Stock Number
- 26G119A
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
- 4.2 Diagonal Color Display Driver Info Center
- Heavy-Duty 80 Amp Battery
- Memory seat
- 3.42 Axle Ratio
- Pickup box
- AT4 High Clearance Step (LPO)
- Power Windows
- Remote keyless entry
- 20 Machined Aluminum Wheels
- Auto-Dim Door Mirrors
- Driver door bin
- Intermittent Wipers
- 2 USB ports
- Hitch Guidance w/Hitch View
- Steering Wheel Audio Control
- Power Seat
- Traction Control
- Auto-Dimming Rear-View Mirror
- Rear seat center armrest
- Delay-off headlights
- Panic alarm
- Rear Window Defroster
- Electronic Stability
- In-Vehicle Trailering System App
- ABS brakes
- Heated door mirrors
- Multicolor 15 Diagonal Head-Up Display
- Lane Departure Warning System
- Automatic Headlights
- 2 USB Ports (1st Row)
- Dual 220-Amps Primary/170-Amps Aux Alternators
- Rear reading lights
- Power Steering
- HD REAR VISION CAMERA
- Front reading lights
- Front License Plate Kit
- Exhaust Brake
- Trailer Tire Pressure Monitor Sensors
- Speed control
- Perforated Leather-Appointed Front Seat Trim
- Tachometer
- Front Side Air Bags
- Rear step bumper
- Compass
- 6 Speakers
- Compass located in instrument cluster
- 4-Wheel Disc Brakes
- Outside temperature display
- Occupant sensing airbag
- Power passenger seat
- 4-Wheel Independent Susp.
- Heated Front Seats
- Air Conditioning
- Front anti-roll bar
- Heated rear seats
- Automatic temperature control
- Security System
- driver memory
- Fold-Down Split Rear Seat
- Heated Steering Wheel
- Speed-sensing steering
- Ventilated front seats
- Illuminated entry
- Bumpers: body-color
- Front center armrest
- Telescoping steering wheel
- Front fog lights
- Overhead Console
- Premium audio system: Premium GMC Infotainment System
- HD SURROUND VISION
- Passenger vanity mirror
- AM/FM radio: SiriusXM with 360L
- MULTIPRO AUDIO SYSTEM BY KICKER
- Engine Block Heater
- Power door mirrors
- Overhead airbag
- Voltmeter
- Apple CarPlay/Android Auto
- Winter Grille Cover
- Body Color Wheel Arch Moldings (LPO)
- Tilt steering wheel
- Turn signal mirrors
- Front dual zone A/C
- Brake assist
- Low tire pressure warning
- Passenger door bin
- Off-Road Pkg
- 8 Multicolor Driver Information Center
- Driver vanity mirror
- Ultrasonic Front & Rear Park Assist
- Preferred Equipment Group 4SB
- Driver Alert Package I
- Lane Change Alert w/Side Blind Zone Alert
- Power Rear Windows w/Express Down
- Deep-Tinted Glass
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Forward Collision Alert
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Power Windows w/Driver Express Up/Down
- Power Sunroof
- Driver Alert Package II
- AT4 Preferred Package
- 12-Volt Rear Auxiliary Power Outlet
- Steering Wheel Audio Controls
- 120-Volt Instrument Panel Power Outlet
- Technology Package
- 4G LTE Wi-Fi Hotspot Capable
- Heated 2nd Row Outboard Seats
- Front Prem Floor Liners w/Removable Carpet Insert
- Manual Tilt-Wheel/Telescoping Steering Column
- Wireless Phone Projection
- Electric Rear-Window Defogger
- Radio: AM/FM w/Premium GMC Infotainment System
- Radio: Premium GMC Infotainment Sys w/Navigation
- AT4 Premium Plus Package
- Hill Descent Control
- X31 Off-Road Package
- LED Cargo Area Lighting
- Painted Black Surround Grille
- Heated Driver & Front Outboard Passenger Seats
- Safety Alert Seat
- Bed View Camera w/2 Trailer Camera Provisions
- Heated & Ventilated Front Bucket Seats
- Rear Prem Floor Liners w/Removable Carpet Insert
- Red Recovery Hooks
- Power Sliding Rear Window w/Defogger
- GMC Connected Access Capable
- Rear Wheelhouse Liners
- Following Distance Indicator
- Remote Vehicle Starter System
- Automatic Emergency Braking
- Unauthorized Entry Theft-Deterrent System
- Universal Home Remote
- Wireless Charging
- Power Door Locks
- 2-Speed Active Transfer Case
- Integrated Trailer Brake Controller
- SiriusXM w/360L
- 2nd Row Dual USB Charge-Only Ports
- Floor-Mounted Center Console
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- Bose Premium 7 Speaker Sound System
- 6-Speaker Audio System Feature
- LED Smoked Amber Roof Marker Lamps
- Gooseneck/5th Wheel Prep Package
- Power Front Passenger Windows w/Express Up/Down
- IntelliBeam Automatic High Beam On/Off
- HD Radio
- Inside Rearview Auto-Dimming Rear Camera Mirror
- Front Bucket Seats
- Keyless Open & Start
- Electrical Lock Control Steering Column
- Gooseneck/5th Wheel Package
- Rear Cross Traffic Alert
- OnStar & GMC Connected Services Capable
- 120-Volt Bed Mounted Power Outlet
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
Standard Features
- AT4 Preferred Package
- Driver Alert Package I
- Driver Alert Package II
- Power Sunroof
- Technology Package
- Bed View Camera w/2 Trailer Camera Provisions
- Universal Home Remote
- Power Sliding Rear Window w/Defogger
- Radio: Premium GMC Infotainment Sys w/Navigation
- Bose Premium 7 Speaker Sound System
- LED Smoked Amber Roof Marker Lamps
- Wireless Charging
- Inside Rearview Auto-Dimming Rear Camera Mirror
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Gooseneck/5th Wheel Prep Package
- Bed View Camera w/2 Trailer Camera Provisions
- Forward Collision Alert
- Automatic Emergency Braking
- IntelliBeam Automatic High Beam On/Off
- Following Distance Indicator
- Safety Alert Seat
- 6-Speaker Audio System Feature
- SiriusXM w/360L
- HD Radio
- Radio: AM/FM w/Premium GMC Infotainment System
- Wireless Phone Projection
- Floor-Mounted Center Console
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- Front Prem Floor Liners w/Removable Carpet Insert
- Rear Prem Floor Liners w/Removable Carpet Insert
- OnStar & GMC Connected Services Capable
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2nd Row Dual USB Charge-Only Ports
- Spray-On Pickup Box Bed Liner w/AT4 Logo
- Heated Driver & Front Outboard Passenger Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Steering Wheel Audio Controls
- Manual Tilt-Wheel/Telescoping Steering Column
- Electrical Lock Control Steering Column
- Unauthorized Entry Theft-Deterrent System
- Deep-Tinted Glass
- Painted Black Surround Grille
- Power Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- LED Cargo Area Lighting
- Red Recovery Hooks
- Rear Wheelhouse Liners
- X31 Off-Road Package
- Integrated Trailer Brake Controller
- 2-Speed Active Transfer Case
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Hill Descent 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).