Used 2021 GMC Sierra 1500 AT4 Truck Crew Cab Photo 1 of 1

Used 2021 GMC Sierra 1500 AT4 Truck Crew Cab

Used 2021 GMCSierra 1500 AT4

Diesel

Located at

JAMES MITSUBISHI GREECE

Location Details Website

Exterior Color: Onyx Black
Interior Color: Jet Black
Odometer: 70,336 miles
Body/Seating: Truck Crew Cab/5 seats
Seats: 5 seats
Fuel Economy: 22/26 MPG City/Hwy

Transmission: Automatic
Drivetrain: 4x4
Engine: I-6 cyl
VIN: 1GTU9EET7MZ229963
Stock Number: P2024

Navigation system
Lane departure
Leather upholstery
Automatic temperature control
Power moonroof
Premium audio system
Wireless phone connectivity
Parking sensors
Exterior parking camera front
Exterior parking camera left
Exterior parking camera right
Exterior parking camera rear

Adaptive Cruise Control
Rear Camera Mirror
Premium Bose 7-Speaker Sound System
Wireless Charging
IntelliBeam Automatic High Beam On/Off
Driver Alert Package II
Forward Collision Alert
Lane Keep Assist w/Lane Departure Warning
Automatic Emergency Braking
Front Pedestrian Braking
Following Distance Indicator
Safety Alert Seat
Bed View Camera
3.23 Rear Axle Ratio
8" Driver Information Center
Front License Plate Kit
Engine: Duramax 3.0L Turbo-Diesel I6
220 Amp Alternator
Engine Block Heater
850 Heavy-Duty Battery
Delete External Engine Oil Cooler
GVWR: 7,100 lbs
Tires: LT265/60R20 MT BW
265/70R17SL AS BW Spare Tire
AT4 Preferred Package
Universal Home Remote
Power Sliding Rear Window w/Rear Defogger
Radio: Premium GMC Infotainment Sys w/Navigation
SiriusXM w/360L
AT4 Value Package
Tires: LT275/65R18C MT BW
Driver Alert Package I
Ultrasonic Front & Rear Park Assist
Lane Change Alert w/Side Blind Zone Alert
Rear Cross Traffic Alert
Perimeter Lighting
MultiPro Audio System by Kicker
AT4 CarbonPro Edition
Unique Grille Surround w/Black Chrome Finish
AT4 Carbon Hard Badge
CarbonPro Bed
Black Dual Exhaust Tips
Wheels: 20" x 9" 6-Spoke Carbon Gray Painted Alum
Power Sunroof
Front Bucket Seats
10-Way Power Driver Seat Adjuster w/Lumbar
10-Way Power Passenger Seat Adjuster w/Lumbar
Driver Memory
Preferred Equipment Group 4SB
Radio: Premium GMC Infotainment Sys w/Multi-Touch
6-Speaker Audio System Feature
Floor-Mounted Center Console
Compass
4.2" Diagonal Color Display Driver Info Center
Electric Rear-Window Defogger
Power Door Locks
Remote Vehicle Starter System
Keyless Open & Start
Color-Keyed Carpeting Floor Covering
Front Prem Floor Liners w/Removable Carpet Insert
Rear Prem Floor Liners w/Removable Carpet Insert
OnStar & GMC Connected Services Capable
4G LTE Wi-Fi Hotspot Capable
GMC Connected Access Capable
12-Volt Rear Auxiliary Power Outlet
120-Volt Instrument Panel Power Outlet
120-Volt Bed Mounted Power Outlet
2 USB Ports
Rear Dual USB Charging-Only Ports
HD Rear Vision Camera
Heated Driver & Front Outboard Passenger Seating
Ventilated Driver & Front Passenger Seats
Steering Wheel Audio Controls
Manual Tilt-Wheel & Telescoping Steering Column
Electrical Lock Control Steering Column
Theft Deterrent System
Power Front Windows w/Driver Express Up/Down
Power Front Passenger Windows w/Express Up/Down
Power Rear Windows w/Express Down
Spray-On Pickup Bed Liner w/AT4 Logo
Deep-Tinted Glass
Body-Color Surround Grille
LED Cargo Area Lighting
Red Recovery Hooks
Tires: 265/65R18SL AT BW
Wheels: 18" x 8.5" Machined Aluminum
Rear Wheelhouse Liners
Trailering Package
Hitch Guidance
ProGrade Trailering System
Hitch Guidance w/Hitch View
In-Vehicle Trailering App
170 Amp Alternator
Heavy-Duty Air Filter
Auxiliary External Transmission Oil Cooler
Auto-Locking Rear Differential
Hill Descent Control
Skid Plates
Off-Road Suspension
Integrated Trailer Brake Controller
2-Speed Transfer Case
Technology Package
HD Surround Vision w/2 Trailer View Camera Provisions
Multicolor 15" Diagonal Head-Up Display
Transmission: 10-Speed Automatic
Heated 2nd Row Outboard Seats

Convenience Features

1-touch down
1-touch up
Adaptive Cruise Control
Air conditioning
Auto-dimming rearview mirror
Automatic temperature control
Driver door bin
Driver vanity mirror
Front beverage holders
Front dual zone A/C
Garage door transmitter
Heated steering wheel
Illuminated entry
Memory seat
Moonroof sunshade: manual
Navigation system
Overhead console
Passenger door bin
Passenger vanity mirror
Power moonroof
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

Suspension/Handling

Alloy wheels
Front anti-roll bar
Front tires: 265/60QR20.0
Front wheel independent suspension
Power steering
Rear tires: 265/60QR20.0
Speed-sensing steering
Tires: all-terrain
Wheel size: 20"

Entertainment Features

1st row LCD monitors: 2
Premium audio system: Premium GMC Infotainment System
Primary LCD size: 8.0"
Radio data system
Smart device integration: Apple CarPlay/Android Auto
Speaker type: Bose
Speakers: 7
Steering wheel mounted audio controls
Wireless phone connectivity: Bluetooth

Seats and Trim

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

Powertrain

Block heater
Compressor: intercooled turbo
Cylinder configuration: I-6
Cylinder deactivation
Drive type: four-wheel
Engine liters: 3.0L
Engine location: front
Fuel economy city: 22mpg
Fuel economy combined: 18mpg
Fuel economy highway: 26mpg
Fuel tank capacity: 24.0gal.
Horsepower: 277hp @ 3,750RPM
Hybrid traction battery type: none
Manual-shift auto
Mode select transmission
Number of valves: 24
Rear locking differential
Standard fuel economy fuel type: gasoline
Transmission: 10 speed automatic
Variable intake manifold
Variable valve control

Off-Road Capability

Ground clearance (min): 276mm (10.9")

Body Exterior

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
Tailpipe finisher: black
Trailer hitch receiver
Trailer sway control

Specs and Dimensions

Compression ratio: 15.00 to 1
Curb weight: 2,486kg (5,480lbs)
Engine bore x stroke: 84.0mm x 90.0mm (3.31" x 3.54")
Engine horsepower: 277hp @ 3,750RPM
Exterior body width: 2,063mm (81.2")
Exterior height: 1,990mm (78.3")
Exterior length: 5,885mm (231.7")
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")
GVWR: 3,221kg (7,100lbs)
Payload: 907kg (2,000lbs)
Rear headroom: 1,019mm (40.1")
Rear hiproom: 1,530mm (60.2")
Rear legroom: 1,102mm (43.4")
Rear shoulder room: 1,655mm (65.2")
Wheelbase: 3,744mm (147.4")

Lighting, Visibility and Instrumentation

Appearance: analog
Auto high-beam headlights
Blind spot: Lane Change Alert with Side Blind Zone Alert warning
Compass
Delay-off headlights
Exterior parking camera cargo
Exterior parking camera front
Exterior parking camera left
Exterior parking camera rear
Exterior parking camera right
Front fog lights
Front reading lights
Fully automatic headlights
Heads up display
Lane departure: Lane Keep Assist with Lane Departure Warning active
Low tire pressure warning
Oil pressure gauge
Outside temperature display
Parking sensors: UltraSonic front and rear
Rear reading lights
Rear window defroster
Tachometer
Trip computer
Variably intermittent wipers
Voltmeter

Safety and Security

4 wheel disc brakes
ABS brakes
Brake assist
Dual front impact airbags
Dual front side impact airbags
Electronic stability
Forward collision: Forward Collision Alert with Automatic Braking mitigation
Front pedestrian detection: prevention
Ignition disable
Occupant sensing airbag
Overhead airbag
Panic alarm
Perimeter/approach lights
Rear collision: Rear Cross-Traffic Alert warning
Security system
Traction control

Overall4.0Out of 5

Depreciation of 50%
By Manny A on 10/28/2026 10:06:36 AM
4.0
This is a amazing truck.. Comfortable lots of sensors Etc…. My truck has 30000 miles I when to trade in they offer $46000 I paid $86000 the depreciation is incredible I don’t buy new truck never again.…
2021 GMC SLT 4WD SIERRA, Great Truck
By Ransom1 on 10/15/2026 4:18:42 PM
5.0
This is my 8th truck. This is hands down the very best truck I’ve ever owned. Not only is it the best looking truck on the road I have never had it in the shop except for oil changes and scheduled maintenance. The silver does not show dirt or grime.…
Great 4 cylinder truck
By Steve on 9/23/2026 2:01:15 AM
5.0
I have only pulled a trailer one time and still got 18 mpg down doing 80 down the interstate. Otherwise this vehicle is used for commuting or recreating. I typically get 22-24 mpg driving MT highways to the mountains. The turbo has some spunk for getting up to speed and the five years I've had my truck no complaints.…

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