2020 GMC Sierra 1500 SLT

  • Used
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Jet Black
    Body/Seating
    Truck Crew Cab/5 seats
    Seats
    5 seats
    Fuel Economy
    17/24 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4x2
    Engine
    V-8 cyl
    VIN
    3GTU8DED5LG152658
    Stock Number
    LG152658

      The highlights

      • Navigation system
      • Lane departure
      • Leather upholstery
      • Automatic temperature control
      • Power moonroof
      • Premium audio system
      • Wireless phone connectivity
      • Parking sensors
      • Front dual zone A/C
      • Auto high-beam headlights
      • Auto-dimming rearview mirror
      • Split folding rear seat
      • 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
      • 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
      • Sunroof sunshade: manual
      • Telescoping steering wheel
      • Tilt steering wheel
      • Alloy wheels
      • Front anti-roll bar
      • Front tires: 275/60SR20.0
      • Front wheel independent suspension
      • Power steering
      • Rear tires: 275/60SR20.0
      • Speed-sensing steering
      • Tires: all-terrain
      • Wheel size: 20"
      • 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
      • Smart device integration: Apple CarPlay/Android Auto
      • Speaker type: Bose
      • Speakers: 7
      • 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: rear-wheel
      • Engine location: front
      • Fuel economy city: 17mpg
      • Fuel economy combined: 20mpg
      • Fuel economy fuel type: gasoline
      • Fuel economy highway: 24mpg
      • Hybrid traction battery type: none
      • Manual-shift auto
      • Mode select transmission
      • Rear locking differential
      • Variable valve control
      • Ground clearance (min): 200mm (7.9")
      • Auto-dimming door mirrors
      • Bedliner
      • Bumpers: chrome
      • Door mirrors: chrome
      • Heated door mirrors
      • Left rear passenger door: conventional
      • Power door mirrors
      • Rear cargo: tailgate
      • Rear step bumper
      • Right rear passenger: conventional
      • Trailer hitch receiver
      • Trailer sway control
      • Exterior body width: 2,063mm (81.2")
      • Exterior height: 1,917mm (75.5")
      • 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")
      • Turning radius: 7.1m (23.5')
      • Wheelbase: 3,744mm (147.4")
      • Appearance: analog
      • Auto high-beam headlights
      • Blind spot: Lane Change Alert with Side Blind Zone Alert warning
      • Compass
      • Delay-off headlights
      • Front fog lights
      • Front reading lights
      • Fully automatic headlights
      • 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
      • 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
      • Ignition disable
      • Occupant sensing airbag
      • Overhead airbag
      • Panic alarm
      • Pedestrian detection: prevention
      • Perimeter/approach lights
      • Rear collision: Rear Cross-Traffic Alert warning
      • Security system
      • Traction control
      8-Speed Automatic, Jet Black Leather.
      This Vehicle is nicely equipped with the following features: Driver Alert Package I (Front Frame-Mounted Black Recovery Hooks, Lane Change Alert w/Side Blind Zone Alert, Perimeter Lighting, Rear Cross Traffic Alert, and Ultrasonic Front & Rear Park Assist), Driver Alert Package II (Adaptive Cruise Control - Camera, Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, Front Pedestrian Braking, IntelliBeam Automatic High Beam On/Off, Lane Keep Assist w/Lane Departure Warning, and Safety Alert Seat), Max Trailering Package (220 Amp Alternator, Enhanced Cooling Radiator, Heavier Duty Rear Springs, and Increased RGAWR), Preferred Equipment Group 4SA (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 170 Amp Alternator, 4G LTE Wi-Fi Hotspot Capable, Auxiliary External Transmission Oil Cooler, Chrome Grille, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, GMC Connected Access Capable, HD Radio, Heated Driver & Front Outboard Passenger Seating, Heavy-Duty Rear Locking Differential, Hitch Guidance, Hitch Guidance w/Hitch View, In-Vehicle Trailering App, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel & Telescoping Steering Column, OnStar & GMC Connected Services Capable, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, ProGrade Trailering System, Rear Dual USB Charging-Only Ports, Rear Wheelhouse Liners, Remote Vehicle Starter System, Steering Wheel Audio Controls, and Theft Deterrent System (Unauthorized Entry)), SLT Convenience Package (2 USB Ports, 2 USB Ports (1st Row), Floor-Mounted Center Console, Front Bucket Seats, Heated 2nd Row Outboard Seats, Power Sliding Rear Window w/Rear Defogger, Universal Home Remote, and Ventilated Driver & Front Passenger Seats), SLT Preferred Package (Premium Bose 7-Speaker Sound System, Radio: Premium GMC Infotainment Sys w/Navigation, SiriusXM w/360L, and Wireless Charging), SLT Premium Plus Package (Chrome Wheel To Wheel Assist Steps and Spray-On Pickup Bed Liner w/GMC Logo), Trailering Package, 8-Speed Automatic, Jet Black Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 20" x 9" Polished Aluminum Wheels, 4-Wheel Disc Brakes, 6 Speakers, 6-Speaker Audio System Feature, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Brake assist, Bumpers: chrome, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Front 40/20/40 Split-Bench Seat, Front anti-roll bar, Front Center Armrest w/Storage, Front dual zone A/C, Front fog lights, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Heated door mirrors, Heated front seats, Heated steering wheel, Heavy Duty Suspension, Illuminated entry, Low tire pressure warning, Memory seat, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Leather-Appointed Front Seat Trim, Power door mirrors, Power driver seat, Power passenger seat, Power steering, Power Sunroof, Power windows, Premium audio system: GMC Infotainment System, Radio data system, Radio: Premium GMC Infotainment Sys w/Multi-Touch, Rear reading lights, Rear seat center armrest, Rear step bumper, Rear window defroster, Remote keyless entry, Security system, Speed control, Speed-sensing steering, Split folding rear seat, Steering wheel mounted audio controls, Tachometer, Telescoping steering wheel,

      KBB.com Consumer Reviews

      Kelley Blue Book Logo4.0out of 5 overall
      • 4.0

        Depreciation of 50%

        by Manny A on 10/28/2026 10:06:36 AM

        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.…
      • 5.0

        2021 GMC SLT 4WD SIERRA, Great Truck

        by Ransom1 on 10/15/2026 4:18:42 PM

        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.…
      • 5.0

        Great 4 cylinder truck

        by Steve on 9/23/2026 2:01:15 AM

        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.…