
Used 2020 GMCSierra 1500 AT4
- Exterior Color
- Red Quartz Tintcoat
- Interior Color
- Jet Black
- Odometer
- 86,845 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Fuel Economy
- 16/21 MPG City/Hwy
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GTP9EED9LZ277615
- Stock Number
- LZ277615
GMC
Sierra 1500
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
- AT4 Preferred Package
- AT4 Premium Package
- Driver Alert Package I
- Preferred Equipment Group 4SB
- Trailering Package
- 6 Speakers
- 6-Speaker Audio System Feature
- AM/FM radio: SiriusXM with 360L
- HD Radio
- MultiPro Audio System by Kicker
- Premium audio system: GMC Infotainment System
- Premium Bose 7-Speaker Sound System
- Radio data system
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- Radio: Premium GMC Infotainment Sys w/Navigation
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Air Conditioning
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Memory seat
- Power driver seat
- Power Front Passenger Windows w/Express Up/Down
- Power Front Windows w/Driver Express Up/Down
- Power Rear Windows w/Express Down
- Power steering
- Power windows
- Remote keyless entry
- Remote Vehicle Starter System
- Steering wheel mounted audio controls
- Universal Home Remote
- Electrical Lock Control Steering Column
- Manual Tilt-Wheel & Telescoping Steering Column
- Off-Road Suspension
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open & Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Door Locks
- Power Sunroof
- Brake assist
- Electronic Stability Control
- Hill Descent Control
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Perimeter Lighting
- Panic alarm
- Security system
- Theft Deterrent System (Unauthorized Entry)
- Speed control
- Heavy-Duty Rear Locking Differential
- 170 Amp Alternator
- Auxiliary External Transmission Oil Cooler
- 6" Rectangular Black Tubular Assist Steps (LPO)
- Auto-dimming door mirrors
- Body-Color Surround Grille
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- High Gloss Black Mirror Caps
- High-Capacity Air Filter
- LED Cargo Area Lighting
- Power door mirrors
- ProGrade Trailering System
- Rear step bumper
- Rear Wheelhouse Liners
- Spray-On Pickup Bed Liner w/AT4 Logo
- 2 USB Ports
- 2 USB Ports (1st Row)
- 4.2" Diagonal Color Display Driver Info Center
- 4G LTE Wi-Fi Hotspot Capable
- All-Weather Floor Liners w/AT4 Logo (LPO)
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Color-Keyed Carpeting Floor Covering
- Compass
- Driver door bin
- Driver vanity mirror
- Floor-Mounted Center Console
- Front reading lights
- GMC Connected Access Capable
- HD Rear Vision Camera
- Heated steering wheel
- Illuminated entry
- Lane Change Alert w/Side Blind Zone Alert
- OnStar & GMC Connected Services Capable
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear Cross Traffic Alert
- Rear Dual USB Charging-Only Ports
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- Wireless Charging
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Front Bucket Seats
- Front Center Armrest
- Heated 2nd Row Outboard Seats
- Heated Driver & Front Outboard Passenger Seating
- Heated front seats
- Heated rear seats
- Perforated Leather-Appointed Front Seat Trim
- Power passenger seat
- Split folding rear seat
- Ventilated Driver & Front Passenger Seats
- Ventilated front seats
- Passenger door bin
- Hitch Guidance
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering App
- Integrated Trailer Brake Controller
- Red Recovery Hooks
- Trailer Tire Pressure Monitor System
- 18" x 8.5" Machined Aluminum Wheels
- Alloy wheels
- Deep-Tinted Glass
- Power Sliding Rear Window w/Rear Defogger
- Variably intermittent wipers
- 3.23 Rear Axle Ratio
- 7 PASSENGER SEATING
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
- 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"
- Radio data system
- Satellite radio trial duration with new vehicle purchase (months): 3
- Smart device integration: Apple CarPlay/Android Auto
- 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 deactivation
- Drive type: four-wheel
- Engine location: front
- Fuel economy city: 16mpg
- Fuel economy combined: 18mpg
- Fuel economy fuel type: gasoline
- Fuel economy highway: 21mpg
- Fuel tank capacity: 24.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Variable valve control
- Ground clearance (min): 276mm (10.9")
- 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
- 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")
- 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")
- 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
Dealer Notes
Take on any terrain with confidence in the 2020 GMC Sierra 1500 AT4, a premium off-road pickup that blends rugged capability with upscale comfort and advanced technology. Built to conquer the outdoors while delivering everyday refinement, the Sierra AT4 stands out as the ultimate balance of toughness and luxury.
Powering the AT4 is a choice of strong engines, including the standard 5.3L EcoTec3 V8 with 355 hp and 383 lb-ft of torque, paired with a 10-speed automatic transmission for smooth, confident performance. For even greater capability, available options include the 6.2L V8 or the 3.0L Duramax Turbo-Diesel, offering excellent torque and towing power. With up to 9,400 lbs of towing capacity (when properly equipped) and advanced trailering technology, this Sierra is always ready for the worksite or the weekend.
Built for adventure, the AT4 comes standard with factory-installed 2-inch suspension lift, off-road-tuned Rancho shocks, skid plates, hill descent control, and four-wheel drive, giving you the confidence to tackle trails and rough terrain with ease.
Step inside the AT4, and youll find a cabin designed for both durability and luxury. Leather-appointed seating with exclusive Kalahari accents, heated and ventilated front seats, a heated steering wheel, and dual-zone climate control create a premium environment. Crew cab models provide generous rear-seat space for passengers, while smart storage solutions make it easy to carry gear.
Technology is seamlessly integrated, featuring an 8-inch touchscreen infotainment system with Apple CarPlay, Android Auto, Bluetooth, and available navigation. A premium Bose sound system delivers exceptional audio, while features like wireless charging and multiple USB ports keep you connected on the go.
The AT4 is also equipped with advanced safety features, including Forward Collision Alert, Lane Keep Assist, Automatic Emergency Braking, and available HD Surround Vision, helping you drive with confidence whether on the highway or off the beaten path.
With its bold design featuring a black chrome grille, red recovery hooks, and distinctive AT4 badging the 2020 GMC Sierra 1500 AT4 makes a strong statement wherever it goes.
Rugged yet refined, capable yet comfortable, the Sierra AT4 is the truck thats just as ready for the backcountry as it is for city streets. SALES 281-509-9097
Powering the AT4 is a choice of strong engines, including the standard 5.3L EcoTec3 V8 with 355 hp and 383 lb-ft of torque, paired with a 10-speed automatic transmission for smooth, confident performance. For even greater capability, available options include the 6.2L V8 or the 3.0L Duramax Turbo-Diesel, offering excellent torque and towing power. With up to 9,400 lbs of towing capacity (when properly equipped) and advanced trailering technology, this Sierra is always ready for the worksite or the weekend.
Built for adventure, the AT4 comes standard with factory-installed 2-inch suspension lift, off-road-tuned Rancho shocks, skid plates, hill descent control, and four-wheel drive, giving you the confidence to tackle trails and rough terrain with ease.
Step inside the AT4, and youll find a cabin designed for both durability and luxury. Leather-appointed seating with exclusive Kalahari accents, heated and ventilated front seats, a heated steering wheel, and dual-zone climate control create a premium environment. Crew cab models provide generous rear-seat space for passengers, while smart storage solutions make it easy to carry gear.
Technology is seamlessly integrated, featuring an 8-inch touchscreen infotainment system with Apple CarPlay, Android Auto, Bluetooth, and available navigation. A premium Bose sound system delivers exceptional audio, while features like wireless charging and multiple USB ports keep you connected on the go.
The AT4 is also equipped with advanced safety features, including Forward Collision Alert, Lane Keep Assist, Automatic Emergency Braking, and available HD Surround Vision, helping you drive with confidence whether on the highway or off the beaten path.
With its bold design featuring a black chrome grille, red recovery hooks, and distinctive AT4 badging the 2020 GMC Sierra 1500 AT4 makes a strong statement wherever it goes.
Rugged yet refined, capable yet comfortable, the Sierra AT4 is the truck thats just as ready for the backcountry as it is for city streets. SALES 281-509-9097
KBB.com Consumer Reviews

Overall4Out of 5
- 3.0
Nice truck
By froggy | on Sunday, December 06, 2020
I purchased this truck brand new and at 3900 miles I started to have a misfire. The warranty put a refurbished rebuilt engine in it. I was not aware that the warranty doesn't put new parts in just refurbished rebuilt parts. I traded in and lost my favorite blue truck. Not a fan of the whole process. Love the truck just not how the warranty went. I would not own another brand or model the 2020 is the nicest riding and looking. Just got a bad motor from the manufacture.… - 5.0
Great Truck
By Mel | on Sunday, April 25, 2021
I love it, I get compliments every where I go, and it apparently worth more than I paid for it brand new, a year and a half later. can't ask for much more than that.… - 5.0
Well done GM
By Tony | on Thursday, November 26, 2020
This truck has a 10 speed transmission that you can barely feel it shift. Traded in an F150 and test drove a similar equipped Ram. Although the Ram was nice, the styling of the GMC won me over, along with the tailgate! It also pulls my boat way better than the Ford, just smoother all around. The cabin is very quiet and the gas mileage is much better than V8 Ford. The cabin is super quiet and the ride is awesome. Love the adaptive cruise control too. The technology is fine and the screen is plenty big. Remember, you are driving this truck, not going to thr drive in! Most importantly, the controls are simple to use and Bose stereo sounds great! Oh, and I got it cheaper than the similar Ram too!…
Based on 88 consumer ratings for 2019–2025 models. | Privacy
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