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Riverhead GMC · Riverhead, NY

2020 GMC Sierra 1500 AT4

66,634 miles · truck

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2020
MakeGMC
ModelSierra 1500
TrimAT4
Stock numberUB6751
Mileage66,634 miles
BodyPickup
Engine5.3L 8-cyl
Cylinders8
Displacement5.3L
TransmissionAutomatic
Drivetrain4WD
FuelGasoline
MPG15 city / 19 hwy
ExteriorSummit White
Doors4

Vehicle description

This 2020 GMC Sierra 1500 AT4 arrives ready to tackle any challenge with premium capability and refined comfort. Finished in clean white with jet black leather interior accented in Kalahari tones, this crew cab short box combines serious truck performance with elevated convenience. With moderate mileage of 66,634 miles, it has plenty of service life ahead while maintaining its strong road presence and dependable character. - Power Sunroof - 20 Machined Aluminum Wheels with Carbon Grey Metallic Accents - AT4 Premium Package - Rear Underseat Storage (LPO) - Technology Package - Heated Driver & Front Passenger Seats - Premium GMC Infotainment System with Navigation - HD Surround Vision with Trailer View Camera - Rear Camera Mirror - Lane Keep Assist with Lane Departure Warning Powered by an EcoTec3 5.3L V8 with a responsive 10-speed automatic transmission, this Sierra delivers EPA-estimated 16 city / 21 highway MPG with an available 4WD system ideal for varied terrain. The AT4 package elevates this truck with premium features including off-road suspension, hill descent control, and integrated trailering technology—all supported by comprehensive driver assistance systems like automatic emergency braking, adaptive cruise control, and rear cross traffic alert. Inside, power-heated leather seating, a heated steering wheel, and wireless charging create a commanding driving environment, while the truck bed includes a spray-on liner with AT4 branding and LED cargo lighting for versatility. This Sierra represents strong value for buyers seeking a capable, well-equipped truck backed by genuine luxury touches. We invite you to experience the commanding comfort and trusted capability this AT4 delivers—contact us today to schedule your test drive.

Features & options (104)

  • Adaptive Cruise Control
  • Heated Steering Wheel
  • 4WD/AWD
  • Aux Input
  • Heated Seats
  • Keyless Entry
  • Keyless Ignition System
  • Leather Seats
  • Wi-Fi Hotspot
  • Emergency Brake Assist
  • Blind Spot Monitor
  • Forward Collision Warning
  • Navigation System
  • Rear View Camera
  • Satellite Radio
  • Tow Hitch/Tow Package
  • Entertainment System
  • Rear head restraint control : 2 rear seat head restraints
  • Seating capacity : 5
  • Individual driver and front passenger seats provide generous room and comfort.
  • This enhances cab appearance and adds sound and weather insulation.
  • Rear seatback upholstery : Carpet rear seatback upholstery
  • Interior accents : Chrome interior accents
  • Headliner material : Cloth headliner material
  • Rear seats fixed or removable : Fixed rear seats
  • Carpet flooring enhances the interior appearance and provides an added layer of sound insulation.
  • Full coverage flooring enhances the interior appearance and provides an added layer of sound insulation.
  • Headliner coverage : Full headliner coverage
  • Your driving glove. A leather wrapped steering wheel brings the touch of luxury to your drive.
  • Front head restraint control : Manual front seat head restraint control
  • Rear head restraint control : Manual rear seat head restraint control
  • Panel insert : Metal-look instrument panel insert
  • Front seatback upholstery : Plastic front seatback upholstery
  • This feature provides increased comfort for rear seat passengers.
  • A center armrest contributes to a more comfortable driving environment.
  • Door panel insert : Simulated wood and metal-look door panel insert
  • Gearshifter material : Urethane gear shifter material
  • This provides an attractive, finished appearance.
  • Vinyl offers easy maintenance and durability.
  • Exterior 120V AC power outlet : 1 exterior 120V AC power outlet
  • Number of beverage holders : 6 beverage holders
  • Passenger doors rear left : Conventional left rear passenger door
  • Passenger doors rear right : Conventional right rear passenger door
  • Clock : Digital clock
  • This feature helps to keep the driver informed about the status of systems on the vehicle.
  • The addition of a visor mirror increases the functionality of the visor.
  • Beverage holders prevent spills and free the driver's hands, which increases safe operation of the vehicle.
  • Rear seat direction : Front facing rear seat
  • Integrated tailgate step
  • Rear cargo door : MultiPro Tailgate tailgate
  • Oil pressure gauge
  • Oil pressure warning
  • This makes it easier to read in low light conditions.
  • This feature helps to remove frost/ice/snow for increased visibility.
  • Speedometer : Redundant digital speedometer
  • Tachometer
  • A trip odometer is useful for keeping track of distance traveled during a trip or between fill-ups.
  • The variable intermittent setting allows the wipers to be adjusted based on the amount of moisture the vehicle is driving through.
  • Voltmeter
  • Number of doors : 4 doors
  • Door mirror style : Black door mirrors
  • Bumper rub strip front : Black front bumper rub strip
  • Window Trim : Black side window trim
  • Door handle material : Body-colored door handles
  • Fenders : Body-colored fender flares
  • Bumpers front : Body-colored front bumper
  • Bumpers rear : Body-colored rear bumper
  • Grille style : Chrome grille with body-color surround
  • Vehicle to trailer hitching assist : Hitch Guidance vehicle to trailer hitching assist
  • In-box lighting : LED in-box lighting
  • Special paint : Monotone paint
  • Door mirror type : Standard style side mirrors
  • Fuel economy (city/highway/combined) : 16/21/18 MPG
  • Emissions tiers : Tier 3 Bin 70 emissions
  • Satellite trial : 3 month satellite trial subscription
  • Speakers number : 7 speakers
  • Primary display size : 8 inch primary display
  • Radio : AM/FM/digital/SiriusXM with 360Lsatellite
  • This stereo system offers noticeably improved fidelity and listening satisfaction compared to a non-amplified audio system.
  • Antenna : Fixed audio antenna
  • Seek scan
  • Valves per cylinder : 2
  • Horsepower : 355 HP @5600 RPM
  • Displacement liters : 5.3 L
  • The alternator maintains the battery charge and supplies electrical power for the ignition system and accessory equipment.
  • Aluminum construction is lightweight, providing weight savings that contribute to better handling and fuel economy.
  • A heavy-duty battery provides increased capacity to accommodate higher service loads, such as cold weather starting.
  • Powertrain type : ICE
  • Rack-and-pinion steering responds quickly to driver input and provides good road feel.
  • Fuel Type : Regular unleaded
  • A monobeam axle provides rigidity and strength. It is used by most trucks and large SUVs because it can support heavy loads.
  • Seatbelt pretensioners number : 2 seatbelt pre-tensioners
  • This safety feature is more easily visible to following drivers and helps them react quicker to a slowing or stopped vehicle.
  • This headlamp layout provides improved lighting due to the dedicated task assigned to each bulb.
  • The additional chest coverage provides upper body support during a collision.
  • DriveType: Four Wheel Drive
  • City: 15 MPG
  • Hwy: 19 MPG
  • Combined: 17 MPG
  • Fuel System: Direct Injection
  • Fuel Tank Capacity: 24 gal
  • Fuel Type: Gasoline Fuel
  • Horse Power: 355
  • Rear Wheel: Single

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.

AutosXchange Intel

Vehicle price analysis

Live listings · within 100 miles of Riverhead, New York
Asking price$34,965Dealer asking price · 66,634 mi
Market value$32,186Market value · based on 10 comparable cars
vs. market High price+8.6%High price · based on 10 comparable cars

Where this price sits

In the typical middle range · 30% of 10 similar listings ask more than this car.

$22,974lowest$56,872highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

+8.6%
−25%Market value+25%
High price$2,779 above the market value of $32,186

Price range

$34,965
$22,974$56,872
8th lowest price of 11 similar listings within 100 milesTick marks the market value · range of 10 similar listings

AutosXchange Insights

  • Compared with 10 used 2019–2021 GMC Sierra 1500 AT4 listings within 100 mi.
  • Priced $2,779 above the market value of 10 comparable cars — compare options, condition and history.
  • 8th lowest price of 11 similar listings within 100 miles.
  • Has about 33,000 fewer miles than similar listings.
  • About 9,519 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # UB6751 — mention it when you call or text.

How we calculate market value: comparable cars for sale now plus their last listed prices.

Price history

Price tracked by AutosXchange since Nov 12, 2026. No price change at this dealership since Nov 12 ($34,965).

$34.7k$34.8k$34.9k$35.0k$35.1k$35.2kNov 11Nov 12

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 12); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.

Cars this price is compared to

Same 2019–2021 Sierra 1500 AT4 · used · any miles · within 100 miles of Riverhead, New York. All 10 comparable cars for sale, nearest first.

More GMC Sierra 1500 near Riverhead

All years and trims. Nearest first.