Used 2018 GMCSierra 1500 Denali

On the Lot
at Mike Maroone GMC
    Exterior Color
    Exterior, Gasoline Met-2 (457b)
    Interior Color
    Dark Slate Metallic
    Odometer
    87,412 miles
    Fuel Economy
    15/20 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4x4
    Engine
    V-8 cyl
    VIN
    3GTU2PEJ8JG512320
    Stock Number
    G512320
    GMC Sierra 1500

    Included Packages & Accessories

    Detailed Specifications

    • Max seating capacity: 6
    • Fuel System: SIDI
    • Horsepower: 420

    Dealer Notes

    CARFAX One-Owner. Clean CARFAX.Recent Arrival! 8-Speed Automatic with Overdrive, 4WD, Jet Black Leather, 110-Volt AC Power Outlet, 150 Amp Alternator, 1st & 2nd Row Color-Keyed Carpeted Floor Mats, 2-Speed Active Electronic AutoTrac Transfer Case, 6 Rectangular Chromed Tubular Assist Steps, 7 Speakers, 8 Multi-Color Customizable Driver Display, Active Noise Cancellation, Adaptive suspension, Adjustable pedals, Air Conditioning, Auto High-beam Headlights, Auto-Dimming Inside Rear-View Mirror, Auto-dimming Rear-View mirror, Automatic temperature control, Body Color Lower Front Bumper, Body Color Rear Bumper w/Cornersteps, Bose Speaker System, Brake assist, Chrome Bodyside Moldings, Chrome Door Handles, Chrome Mirror Caps, Chrome Recovery Hooks, Color-Keyed Carpeting, Deep-Tinted Glass, Denali Ultimate Package, Driver & Front Passenger Illuminated Vanity Mirrors, Dual front impact airbags, Dual front side impact airbags, Dual-Zone Automatic Climate Control, Electric Rear-Window Defogger, Electronic Stability Control, Enhanced Driver Alert Package, Exterior Parking Camera Rear, EZ Lift & Lower Tailgate, Floor Mounted Console, Forward Collision Alert, Front dual zone A/C, Front fog lights, Front Frame-Mounted Black Recovery Hooks, Front Full Feature Power Reclining Bucket Seats, Front wheel independent suspension, Fully automatic headlights, GMC 4G LTE, GMC Connected Access, HD Radio, Heated & Ventilated Front Bucket Seats, Heated door mirrors, Heated steering wheel, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam On/Off Headlight, Lane Keep Assist, Leather Wrapped Heated Steering Wheel, Low Speed Forward Automatic Braking, MagneRide Magnetic Ride Control Suspension, Manual Tilt/Telescoping Steering Column, Memory seat, Navigation System, Occupant sensing airbag, OnStar & GMC Connected Services Capable, Overhead airbag, Perforated Leather Appointed Seat Trim, Polished Exhaust Tip, Power Adjustable Pedals, Power driver seat, Power Folding & Adjustable Heated Outside Mirrors, Power Sliding Rear Window w/Defogger, Power steering, Power Sunroof, Power windows, Power Windows w/Driver Express Up & Down, Preferred Equipment Group 5SA, Premium audio system: GMC Infotainment System, Radio: AM/FM/GMC Infotainment & Navigation, Rear 60/40 Folding Bench Seat (Folds Up), Rear Wheelhouse Liners, Remote Keyless Entry, Remote Locking Tailgate, Remote Vehicle Starter System, Single Slot CD/MP3 Player, SiriusXM Satellite Radio, Speed-sensing steering, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Theft Deterrent System (Unauthorized Entry), Thin Profile LED Fog Lamps, Trailering Equipment, Tri-Mode Power Steps, Turn signal indicator mirrors, Ultrasonic Front & Rear Park Assist, Universal Home Remote, Ventilated front seats, Wheel Locks (Set of 4) (LPO), Wheels: 22 Aluminum w/Premium Paint, Wireless Charging.GMC Dealership Serving Boulder, CO Drivers Mike Maroone GMC GMC Sales, Service, and Parts in Boulder, CO If you have been longing to get into a new GMC close to Boulder, CO, then right now is an ideal opportunity to find your next auto at a low cost, here at Mike Maroone GMC. Enjoy Free Delivery anywhere in Colorado. Our GMC Truck line is headed by the Sierra 1500, 2500 and 3500, each new GMC model can be found here at our Boulder, CO dealership. Discover your new GMC in Boulder now for a test spin of your dream car.

    KBB.com Consumer Reviews

    Kelley Blue Book - KBB.com
    Overall4.1Out of 5
    • Awesome Teuck

      By Sandy on Friday, July 23, 2021

      5.0
      I absolutely love my truck. Comfort is better than our Cadillac and it looks awsome. Luxury interior and amazing in the snow.
    • 2014 1500 denali

      By Nate on Sunday, May 07, 2023

      1.0
      I have decided that this will be the first and final General Motors (GM) product that I will purchase. The air conditioning failed at 60,000 miles due to a problem with the condenser. At 65,000 miles, I had to replace the transmission because it was causing very rough shifts between gears 1-2 and 2-3. Unfortunately, at 120,000 miles, the transmission is once again exhibiting the same issue it had before it was replaced. Additionally, I was unlucky enough to have a truck that experiences paint peeling on nearly every body panel. This is especially prominent in large sections near the windows and rear doors. Needless to say, I will not be making this mistake again.
    • Transmission

      By Big man on Tuesday, February 11, 2025

      1.0
      Terrible vehicle. They sold them know transmission was bad. I’ve put new transmission in 2021. And now it’s going out. Will be third transmission jn 142,000 miles

    Disclaimer

    GENERAL: Options, final pricing, photographs, vehicle availability and its specifications are subject to change at any time and without notice to correct errors or as a result of changing market conditions. New vehicles prices reflect current manufacturer's applicable and eligible customer rebates which include manufacturer rebates or offers and manufacturer captive lender down payment assistance. Leases differ in factory incentives. See Mike Maroone Auto for eligibility. Availability of rebates or other incentives, is subject to restrictions including, without limitation, geographic limitations. Please contact Mike Maroone Auto for most up-to-date vehicle pricing, payment, equipment, availability, photographs, eligible customer rebate information and more. 
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    Certified Pre-Owned GMC Trucks and SUVs Available at Mike Maroone GMC

    At Mike Maroone GMC in Boulder, CO, investing in a certified pre-owned GMC vehicle is a wise choice. Each vehicle undergoes rigorous inspections to ensure functionality and value. If you're looking for a GMC truck near Broomfield, CO, or Longmont, CO, our current inventory of certified pre-owned vehicles is the perfect place to start your search.

    In addition to our certified pre-owned inventory, we offer a wide selection of quality used vehicles. However, nothing beats the dependability and assurance of our certified pre-owned GMC inventory, which is highly sought after in Boulder, CO.

    Possible GMC Models on the Lot

    GMC's lineup includes both SUVs and trucks, and at Mike Maroone GMC, you might find models such as the Acadia, Yukon, Terrain, Sierra 1500, Sierra 2500, Sierra 3500, and Canyon. With multiple trim levels and occasional custom-ordered models, our selection caters to a wide range of preferences in Louisville, CO.

    We welcome you to explore our inventory online or visit us in person at Mike Maroone GMC in Boulder, CO. While our online inventory provides a great start, visiting our dealership allows you to see more options, including vehicles not listed online. Our team is ready to show you similar vehicles to your online selections or guide you through our lot.

    Experience our certified pre-owned GMC vehicles firsthand with a test drive. This is the best way to determine which vehicle suits you best. For financing options, visit our financing page, and check out our used inventory for more choices. Mike Maroone GMC in Boulder, CO, is committed to helping you find the ideal certified pre-owned vehicle.