VIN: 3GTU9DET3MG320304Stock #: C3181A2021 GMC Sierra 1500 SLT

  • Used
  • Diesel
$30,000Blaise Price
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Finance Terms
Blaise Alexander Chevy GMC Mansfield
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    The overview

    Exterior Color
    Summit White
    Interior Color
    Jet Black
    Odometer
    118,720 miles
    Body/Seating
    Truck Crew Cab/5 seats
    Seats
    5 seats
    Fuel Economy
    22/26 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    6
    VIN
    3GTU9DET3MG320304
    Stock Number
    C3181A

      The highlights

      • Leather upholstery
      • Automatic temperature control
      • 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
      • Heated steering wheel

      A closer look at what’s included

      Base model features & specs only
      • 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
      • Garage door transmitter
      • 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 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
      • Primary LCD size: 8.0"
      • Radio data system
      • Smart device integration: Android Auto/Apple CarPlay
      • 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
      • Block heater
      • Compressor: intercooled turbo
      • Cylinder configuration: I-6
      • Drive type: four-wheel
      • Engine liters: 3.0L
      • Engine location: front
      • Fuel economy city: 22mpg
      • Fuel economy combined: 16mpg
      • 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
      • Ground clearance (min): 205mm (8.1")
      • Auto-dimming door mirrors
      • 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
      • Compression ratio: 15.00 to 1
      • 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: 1,918mm (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")
      • GVWR: 3,266kg (7,200lbs)
      • 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")
      • Towing capacity: 3,856kg (8,500lbs)
      • 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
      2021 GMC Sierra 1500 SLT Crew Cab delivers premium capability wrapped in a clean white exterior with jet black leather seating. This 4WD diesel powerhouse combines the efficiency of its 3.0L turbocharged I-6 engine with the strength you need for work or weekend adventures. With EPA-estimated 22 city / 26 highway MPG, Actual mileage may vary, this truck balances power and economy while the 10-speed automatic transmission ensures smooth performance in any condition.

      - Heated and ventilated driver and front passenger seating
      - 120-volt bed mounted and instrument panel power outlets
      - Auto-locking rear differential with ProGrade Trailering System
      - Remote vehicle starter system with keyless open and start
      - Power sliding rear window with rear defogger
      - Chrome assist steps and recovery hooks
      - Hitch guidance with integrated trailer brake controller
      - SiriusXM 360L satellite radio with 4G LTE Wi-Fi hotspot capability
      - Heated steering wheel and power door mirrors
      - Apple CarPlay and Android Auto connectivity

      The SLT Convenience Package, Trailering Package, and Preferred Equipment Group 4SA deliver a well-rounded truck experience. All-terrain tires mounted on 20-inch polished aluminum wheels provide both style and capability, while the engine block heater ensures reliable cold-weather starts. The diesel engine combined with the auxiliary transmission oil cooler and heavy-duty suspension keeps this Sierra ready for whatever you demand.

      Visit us today to experience the refined toughness of this Sierra 1500 SLT. Our team is ready to walk you through every premium feature and answer your questions about truck capability and comfort.

      Track your progress

       
       
       
       

      Peace of mind

      Optional add-on protection

      • GAP Protection
      • Lifetime Powertrain
      • Tires and Wheels
      • Paint Protection

      A name you can trust

      Blaise Alexander Chevrolet of Altoona 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.…
      Dealer Processing Fee $449