2021 GMC Sierra 1500 SLE Truck Crew Cab

  • Used
  • Diesel
$895Includes Dealer & Handling Fee
$29,800Advertised Price1
Mike Maroone Chevrolet South
Location Details
Website
Call 719-387-1071
We’re here to help

    The overview

    Exterior Color
    Onyx Black
    Interior Color
    JET BLACK, CLOTH SEAT TRIM
    Odometer
    78,760 miles
    Fuel Economy
    14/20 MPG City/Hwy
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    Engine: Duramax 3.0L, Turbo-Diesel, Inline 6 Cylinder
    VIN
    3GTU9BET3MG121077
    Stock Number
    PS121077
    • Show Me the CARFAX Fair Value Badge

    A closer look at what’s included

    Engine: Duramax 3.0L Turbo-Diesel I6

    • 220 Amp Alternator
    • Engine Block Heater
    • 850 Heavy-Duty Battery
      Cold-cranking amps/95 amp-hr, maintenance free with rundown protection and retained accessory power.
    • GVWR: 7,200 lbs

    Front 40/20/40 Split-Bench Seat

    • 4-Way Manual Passenger Seat Adjuster

    SLE Value Package

    • Auto-Locking Rear Differential
    • Trailering Package
      Includes trailer hitch, 7-pin and 4-pin connectors.

    SLE Convenience Package

    • Dual-Zone Automatic Climate Control
      Models built before 9-6-2021 that were not equipped with (RG4) fleet delete base content package feature digital temperature displays on the climate control knobs. Certain vehicles built on or after 9-6-2021 will include (00D) not equipped with climate control knob digital temperature display, which removes the digital temperatures displayed on the climate control knobs. See dealer for details.
    • Heated Steering Wheel
    • Manual Tilt-Wheel & Telescoping Steering Column
    • Rear Dual USB Charging-Only Ports

    Radio: GMC Infotainment Audio System

    • 6-Speaker Audio System Feature
    • SiriusXM Radio
      Enjoy an All Access trial subscription with over 150 channels including commercial-free music, plus sports, news and entertainment. Plus listening on the SiriusXM app, online and at home on compatible connected devices is included, so you'll hear the best SiriusXM has to offer, anywhere life takes you. Welcome to the world of SiriusXM. Important: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental (FDR) use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM customer agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.

    Engine: 2.7L Turbo

    • 220 Amp Alternator
    • Transmission: 8-Speed Automatic
      Electronically controlled with overdrive and tow/haul mode. Includes cruise grade braking and powertrain grade braking.
    • 3.42 Rear Axle Ratio

    Trailering Package

    • Hitch Guidance

    Preferred Equipment Group 3SA

    • SLE Convenience Package
    • SLE Value Package
    • Radio: GMC Infotainment Audio System
      Includes 8" diagonal color touch-screen, AM/FM stereo with seek-and-scan and digital clock, Bluetooth streaming audio for music and select phones; featuring wired Android Auto and Apple CarPlay capability for compatible phones.
    • Compass
      Located in instrument cluster.

    More pre-installed items

    • 2.7L Turbo Engine Credit
    • 10-Way Power Driver Seat Adjuster w/Lumbar
    • Heated Driver & Front Outboard Passenger Seating
    • Electric Rear-Window Defogger w/RG4
    • 3-point seatbelt : Rear seat center 3-point seatbelt
    • ABS Brakes : 4-wheel antilock (ABS) brakes
    • Auto headlights : Auto on/off headlight control
    • Brake assist system : Brake assist system
    • Brake type : 4-wheel disc brakes
    • Cab mounted cargo light : Cab mounted cargo light
    • Child door locks : Manual rear child safety door locks
    • Convex spotter : Driver convex spotter mirror
    • Delay off headlights : Delay-off headlights
    • Electronic stability control : StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
    • Front impact airbag driver : Driver front impact airbag
    • Front impact airbag passenger : Passenger front impact airbag
    • Front side impact airbag driver : Seat mounted side impact driver airbag
    • Front side impact airbag passenger : Seat mounted side impact front passenger airbag
    • Headlight type : Reflector headlights
    • Headlights : LED low and high beam headlights
    • High mount stop light : High mounted center stop light
    • Hill start assist : Hill Start Assist (HSA)
    • Illuminated entry : Illuminated entry
    • Immobilizer : Immobilizer
    • Instrumentation display : Analog instrumentation display
    • LED brake lights : LED brake lights
    • Low tire pressure warning : Tire specific low air pressure warning
    • Multiple headlights : Multiple enclosed headlights
    • Number of airbags : 6 airbags
    • Occupancy sensor : Airbag occupancy sensor
    • Overhead airbags : Curtain first and second-row overhead airbags
    • Perimeter approach lighting : Remote activated perimeter approach lighting
    • Rear camera : Rear Vision Camera rear mounted camera
    • Remote panic alarm : Remote panic alarm
    • Restricted driving mode/alerts : Teen Driver restricted driving mode/alerts
    • Running lights : LED daytime running lights
    • Seatbelt pretensioners : Front seatbelt pretensioners
    • Seatbelt pretensioners number : 2 seatbelt pre-tensioners
    • Security system : Security system
    • Air conditioning : Yes
    • Armrests front center : Front seat center armrest
    • Armrests front storage : Front seat armrest storage
    • Cabback insulator : Cabback insulator
    • Climate control : Automatic climate control
    • Door panel insert : Simulated wood and metal-look door panel insert
    • Door trim insert : Vinyl door trim insert
    • Driver lumbar : Driver seat with 2-way power lumbar
    • Driver seat direction : Driver seat with 8-way directional controls
    • Dual-zone front climate control : Dual-zone front climate control
    • Floor coverage : Full floor coverage
    • Floor covering : Full carpet floor covering
    • Floor mats : Rubber front and rear floor mats
    • Folding rear seats : 60-40 folding rear seats
    • Front head restraint control : Manual front seat head restraint control
    • Front head restraints : Height adjustable front seat head restraints
    • Front seat type : Split-bench front seat
    • Front seat upholstery : Cloth front seat upholstery
    • Front seatback upholstery : Plastic front seatback upholstery
    • Gearshifter material : Urethane gear shifter material
    • Headliner coverage : Full headliner coverage
    • Headliner material : Cloth headliner material
    • Heated front seats : Heated driver and front passenger seats
    • Heated steering wheel : Heated steering wheel
    • Interior accents : Chrome interior accents
    • Manual passenger seat controls : Passenger seat manual reclining and fore/aft control
    • Panel insert : Metal-look instrument panel insert
    • Passenger seat direction : Front passenger seat with 4-way directional controls
    • Power driver seat controls : Driver seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control
    • Rear console climate control ducts : Rear console climate control ducts
    • Rear head restraint control : 2 rear seat head restraints
    • Rear head restraint control : Manual rear seat head restraint control
    • Rear head restraints : Height adjustable rear seat head restraints
    • Rear seat folding position : Fold-up rear seat cushion
    • Rear seat upholstery : Cloth rear seat upholstery
    • Rear seatback upholstery : Carpet rear seatback upholstery
    • Rear seats : Split-bench rear seat
    • Rear seats fixed or removable : Fixed rear seats
    • Seating capacity : 6
    • Split front seats : 40-20-40 split-bench front seat
    • Steering wheel material : Leather steering wheel
    • Steering wheel telescopic : Manual telescopic steering wheel
    • Steering wheel tilt : Manual tilting steering wheel
    • Tinted windows : Deep tinted windows
    • 12V power outlets : 2 12V power outlets
    • Accessory power : Retained accessory power
    • All-in-one key : All-in-one remote fob and ignition key
    • Auto door locks : Auto-locking doors
    • Battery charge warning : Battery charge warning
    • Beverage holders : Front beverage holders
    • Brake pad warning : Brake pad wear indicator
    • Capless fuel filler : Capless fuel filler
    • Clock : Digital clock
    • Compass : Compass
    • Cruise control : Cruise control with steering wheel mounted controls
    • DEF fluid gauge : Diesel exhaust fluid (def) gauge
    • Day/Night rearview mirror : Day/Night rearview mirror
    • Door ajar warning : Door ajar warning
    • Door bins front : Driver and passenger door bins
    • Door bins rear : Rear door bins
    • Door locks : Power door locks with 2 stage unlocking
    • Door mirrors : Power door mirrors
    • Driver foot rest : Driver foot rest
    • Driver information center : Driver information center
    • Easy lift tailgate : EZ Lift
    • Easy lower tailgate : EZ Lower
    • Engine hour meter : Engine hour meter
    • Engine temperature warning : Engine temperature warning
    • Engine/electric motor temperature gauge : Engine/electric motor temperature gauge
    • First-row windows : Power first-row windows
    • Folding door mirrors : Manual folding door mirrors
    • Front reading lights : Front reading lights
    • Glove box : Locking glove box
    • Headlights on reminder : Headlights on reminder
    • Heated door mirrors : Heated driver and passenger side door mirrors
    • Ignition type : Push-button
    • Inclinometer : Inclinometer
    • Key in vehicle warning : Key in vehicle warning
    • Keyfob cargo controls : Keyfob trunk control
    • Keyfob keyless entry : Keyfob keyless entry
    • Keyfob remote start : Keyfob remote start
    • Keyfob window controls : Keyfob window control
    • Low level warnings : Low level warning for oil, coolant, fuel, washer fluid, brake fluid and diesel exhaust fluid (DEF)
    • Number of beverage holders : 4 beverage holders
    • Oil pressure gauge : Oil pressure gauge
    • Oil pressure warning : Oil pressure warning
    • One-touch down window : Front and rear one-touch down windows
    • One-touch up window : Driver one-touch up window
    • Overhead console : Mini overhead console
    • Overhead console storage : Overhead console storage
    • Passenger doors rear left : Conventional left rear passenger door
    • Passenger doors rear right : Conventional right rear passenger door
    • Proximity key : Proximity key with hands-free access and push button start
    • Rear cargo door : Tailgate
    • Rear reading lights : Rear reading lights
    • Rear seat check warning : Rear seat check warning
    • Rear seat direction : Front facing rear seat
    • Rear window defroster : Rear window defroster
    • Rear windshield : Fixed rear windshield
    • Seatback storage pockets : 2 seatback storage pockets
    • Second-row windows : Power second-row windows
    • Service interval warning : Service interval indicator
    • Speedometer : Redundant digital speedometer
    • Steering mounted audio control : Steering wheel mounted audio controls
    • Tachometer : Tachometer
    • Tailgate control : Tailgate/power door lock
    • Temperature display : Exterior temperature display
    • Tire pressure : Tire Fill Alert tire pressure fill assist
    • Transmission fluid temperature warning : Transmission fluid temp warning
    • Trip computer : Trip computer
    • Trip odometer : Trip odometer
    • Turn signal warning : Turn signal on warning
    • Under seat tray front : Locking front under seat tray
    • Variable panel light : Variable instrument panel light
    • Visor driver mirror : Driver visor mirror
    • Visor illuminated driver mirror : Illuminated driver visor mirror
    • Visor illuminated passenger mirror : Illuminated passenger visor mirror
    • Visor passenger mirror : Passenger visor mirror
    • Voltmeter : Voltmeter
    • Wipers : Variable intermittent front windshield wipers
    • Bed-rail protectors : Pickup bed-rail protectors
    • Body panels : Galvanized steel/aluminum body panels with side impact beams
    • Box style : Standard style pickup box
    • Bumper rub strip front : Black front bumper rub strip
    • Bumpers front : Chrome front bumper
    • Bumpers rear : Chrome rear bumper
    • Door handle material : Body-colored door handles
    • Door mirror style : Chrome door mirrors
    • Door mirror type : Standard style side mirrors
    • Fenders : Black fender flares
    • Grille style : Chrome grille
    • In-box lighting : LED in-box lighting
    • License plate front bracket : Front license plate bracket
    • Number of doors : 4 doors
    • Paint : Non-metallic paint
    • Rear bumper step : CornerStep rear bumper step
    • Spare tire : Full-size spare tire with steel wheel
    • Spare tire location : Crank-down spare tire
    • Special paint : Monotone paint
    • Tires : P255/70SR17 AS BSW front and rear tires
    • Tow hooks front : 2 front tow hooks
    • Towing class : Class IV tow rating
    • Towing hitch : Trailer hitch
    • Towing hitch light : Trailer hitch light
    • Towing trailer sway : Trailer Sway Control (TSC) trailer sway control
    • Towing wiring harness : Trailer wiring harness
    • Wheels : 17 x 8-inch front and rear silver aluminum wheels
    • Window Trim : Chrome side window trim
    • Emissions : Federal emissions
    • Emissions tiers : Tier 2 Bin 5 emissions
    • Fuel economy (city/highway/combined) : 22/26/24 MPG
    • Antenna : Fixed audio antenna
    • External memory : GMC Infotainment System external memory control
    • Internet radio capability : Internet radio capability
    • Number of first-row screens : 2 total number of 1st row displays
    • Primary display size : 8 inch primary display
    • Primary display touchscreen : Primary monitor touchscreen
    • RDS : Radio data system (RDS)
    • Radio : AM/FM/SiriusXMsatellite
    • Satellite trial : 3 month satellite trial subscription
    • Seek scan : Seek scan
    • Speakers : Standard grade speakers
    • Speakers number : 6 speakers
    • Wireless streaming : Bluetooth wireless audio streaming
    • 4WD type : AutoTrac part-time 4WD
    • ABS Brakes : Four channel ABS brakes
    • Alternator Type : Alternator
    • Battery run down protection : Battery run down protection
    • Battery type : Heavy-duty lead acid battery
    • Block heater : Engine block heater
    • Compressor : Intercooled turbo
    • Cylinder head material : Aluminum cylinder head
    • Displacement liters : 3 L
    • Drive type : Four-wheel drive
    • Electronic parking brake : Electronic parking brake
    • Engine : Duramax 3L I-6 direct injection, DOHC, variable valve control, intercooled turbo, diesel, engine with 277HP
    • Engine Configuration : I6
    • Engine Location : Front mounted engine
    • Engine Mounting direction : Longitudinal mounted engine
    • Engine Short : Duramax 3L I-6 DOHC
    • Engine block material : Aluminum engine block
    • Front anti-roll : Front anti-roll bar
    • Fuel Type : Diesel
    • Horsepower : 277 HP @3750 RPM
    • Ignition : Compression ignition system
    • Lock-up transmission : Lock-up transmission
    • Locking hub control : Auto locking hub control
    • Overdrive transmission : Overdrive transmission
    • Powertrain type : ICE
    • Radiator : Radiator
    • Rear Springs : Regular grade rear springs
    • Rear locking differential : Automatic rear locking differential
    • Selectable mode transmission : Tow/Haul Mode selectable mode transmission
    • Sequential shift control : Sequential shift control
    • Shock absorbers : Gas-pressurized shock absorbers
    • Speed sensitive steering : Speed sensitive power steering
    • Springs front : Front coil springs
    • Springs rear : Rear leaf springs
    • Start-stop engine : Auto stop-start engine
    • Steering : Electric power-assist steering system
    • Steering type : Rack-pinion steering
    • Suspension : Standard ride suspension
    • Suspension ride type front : Independent front suspension
    • Suspension ride type rear : Rigid axle rear suspension
    • Suspension type front : Short and long arm front suspension
    • Suspension type rear : Leaf spring rear suspension
    • Tailpipe : Stainless steel single exhaust
    • Traction control : All-speed ABS and driveline traction control
    • Transfer case : Electronic transfer case shift
    • Transmission : 10-speed automatic
    • Transmission Type : Automatic
    • Valves per cylinder : 4
    • Variable intake manifold : Variable intake manifold
    • Ventilated brakes : Front and rear ventilated disc brakes
    • Handsfree : Bluetooth handsfree wireless device connectivity
    • Internet access : 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
    • Smart device integration : Apple CarPlay/Android Auto smart device mirroring
    • USB ports : 4 USB ports
    Used 2021 GMC Sierra 1500 SLE Crew Cab 4x4 in Colorado Springs, CO: 78,716 miles

    This 2021 GMC Sierra 1500 SLE Crew Cab 4x4 has 78,716 miles and is available at Mike Maroone Chevrolet South, 230 N Academy Blvd, Colorado Springs, CO 80909.

    Schedule a test drive of this Sierra 1500 SLE

    It's Onyx Black with Jet Black cloth.

    Key features: 3.0L inline-six turbodiesel, automatic transmission, and four-wheel drive. Inside: Apple CarPlay and Android Auto, an 8 color touchscreen, heated front seats, a heated steering wheel, wireless charging, and keyless entry and push-button start. Driver-assist and safety features include a rearview camera. For work, it has trailering equipment and running boards.

    Who it's for: Front Range drivers who need a pickup for towing a camper or trailer, hauling gear up to the mountains, or getting through winter commutes on I-25.

    FAQ
    Is this Sierra 1500 four-wheel drive? Yes. It has four-wheel drive with the 3.0L inline-six turbodiesel.
    Is it set up for towing? Yes. It has trailering equipment. Ask us for the tow rating for this exact configuration.
    What buyer protections come with it? Mike Maroone's 60-day limited powertrain warranty, 3-day/150-mile money-back guarantee, and free delivery anywhere in Colorado.

    Schedule a test drive at Mike Maroone Chevrolet South. Check the current price on this page or call us at (719) 387-1071.

    Peace of mind

    vehicle history report

    Vehicle history report

    • Title information
    • Odometer readings
    • Accident data (if applicable)
    • Service history
    • Vehicle usage
    • Recall information (if applicable)
    • Warranty status
    Free CarFax report

    A name you can trust

    Mike Maroone Honda is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
    More about us

    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.…
    All reviews on KBB.com
    Based on 71 consumer ratings for 2019–2026 models. Privacy

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