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Twin Rocks Auto Sales LLC

622 McClellandtown Rd, Uniontown, PA 15401
4.4
4.4 out of 5 stars
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Used 2018 GMC Sierra 3500HD SLT

57,476 miles

Sold

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This vehicle was sold a month agoListed Price $47,495

Value ChartA visual chart indicating the fair price range is between $45,300 and $53,100, while the current price is $47,495.$45,300 - $53,100$47,495

  • Priced at $47,495, this vehicle is within the current market price range of $45,300 to $53,100.

  • It has 57,476 miles, which is 60,324 (51%) below the median mileage of 117,800.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.

View Full Value Report

SequenceDatePrice ChangeCurrent Price
1.1/13/2026 (3 months ago)$47,995
2.3/4/2026 (a month ago)-$500 (-1.0%)$47,495
Used 2018 GMC Sierra 3500HD SLT for sale near Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi
Used 2018 GMC Sierra 3500HD SLT for sale near Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi
Used 2018 GMC Sierra 3500HD SLT for sale near Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi
Used 2018 GMC Sierra 3500HD SLT for sale near Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi
Used 2018 GMC Sierra 3500HD SLT for sale near Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi
  • Truck
  • Pickup
  • Crew Cab
  • Heavy Hauler
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    57,476miles
  • Aggregate Ratings
    3.8
    3.8 out of 5 stars
  • Generation
    3(2015 - 2019)
  • Trim
    SLT
  • Drivetrain
    4X4
  • Transmission
    6-Speed Shiftable Automatic
  • Exterior Color
    Summit White (White)Factory Paint Code:GAZ
  • Interior Color
    Black
  • Upholstery
    Leather
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    6
  • Max Towing Capacity
    22,700lbs.
  • Weight Class
    10,000-14,000 lbs. (3)
  • Bed Length
    97.8in.
  • Ground Clearance
    8.3inch
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT42XCY7JF253899
  • Starting MSRP
    $55,000

Engine6.6L V8 Bio Diesel 445hp

  • Fuel Type:Bio Diesel
  • Max Horsepower:445 hp @ 2800 rpm
  • Power to Weight Ratio:16.27lbs/hp
  • Max Torque:910 ft.lbf @ 1600 rpm
  • Brand:Duramax
  • Displacement:6.6liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Turbo
  • Fuel Induction:Common Rail Direct Injection
  • Oil Capacity:9.5liters
  • Cam Type:OHV
  • Stroke:3.9
  • Bore:4.06
  • Valves:32

Message from the seller

Clean Carfax, Back Up Camera, Heated Seats, Bed Cap

* Based on opinions and should be considered as general guidance only.

  • Reliability (4)
    4 out of 5 stars
    GMC Sierra 3500HD models are generally known for their robust build quality and durability. The 2018 model continues this trend, with its powerful Duramax diesel engine being a particular highlight for longevity when properly maintained.
  • Maintenance (3)
    3 out of 5 stars
    As with most heavy-duty trucks, maintenance costs can be higher than average due to specialized components and larger fluid capacities. Diesel engine maintenance, while less frequent, can be more expensive per service.
  • Technology (4)
    4 out of 5 stars
    Equipped with the GMC IntelliLink infotainment system, the SLT provides a user-friendly experience with Apple CarPlay and Android Auto integration. Navigation, multiple USB ports, and available Wi-Fi hotspot add to its modern appeal.
  • Comfort (4)
    4 out of 5 stars
    The SLT trim offers a comfortable cabin with supportive leather seats and a quiet ride for a truck of this caliber. Long hauls are made more enjoyable thanks to good sound insulation and a well-appointed interior.
  • Dynamics (4)
    4 out of 5 stars
    For a heavy-duty truck, the 2018 GMC Sierra 3500HD SLT handles surprisingly well, especially considering its immense towing and hauling capabilities. Steering is precise, and body roll is managed effectively for its size.

  • Comfort & Seating:

    • Heated Seats
    • Power Seats

  • Convenience:

    • 115V Power Outlet
    • Adjustable Pedals
    • Automatic Climate Control
    • Garage Door Opener
    • Remote Start

  • Entertainment:

    • Bluetooth
    • Satellite Radio

  • Exterior:

    • Heated Mirrors
    • Tinted Windows

  • Safety:

    • Backup Camera

  • Technology:

    • Navigation

  • Seating:

    • Seating Rows:2
    • Standard Seating:6
    • Max Seating:6
    • Head Room (front):42.8in.
    • Leg Room (front):45.3in.
    • Shoulder Room (front):64.8in.
    • Hip Room (front):60.7in.
    • Head Room (rear):40.5in.
    • Leg Room (rear):40.9in.
    • Shoulder Room (rear):64.3in.
    • Hip Room (rear):60.2in.

  • Measurements:

    • Length:258.4in.
    • Width:96in.
    • Height:77.8in.
    • Bed Length:97.8in.
    • Ground Clearance:8.3in.
    • Wheelbase:167.7in.
    • Front Track:68.8in.
    • Rear Track:75in.

  • Weight:

    • Curb Weight:7,239lbs
    • Gross Weight:13,025lbs
    • Gross Combined Weight:21,100lbs

  • Wheels & Tires:

    • Wheel Diameter:17.0 x 6.5in.
    • Wheel Diameter (rear):17.0 x 6.5in.
    • Tire:LT235/80R17E
    • Tire (rear):LT235/80R17E

  • Performance:

    • Power to Weight Ratio:16.27lbs/hp
    • Turning Circle:55.7ft.
    • Max Payload:5,761lbs
    • Towing Capacity:13,400lbs
    • Max Towing Capacity:22,700lbs

  • Fuel Tank:

    • Fuel Tank Volume:36gallon

All warranties have now EXPIRED

  • Corrosion Perforation
    6 years/100,000 miles
  • Diesel Engine Powertrain
    5 years/100,000 miles
  • Roadside Assistance
    5 years/60,000 miles
  • Courtesy Transportation
    5 years/60,000 miles
  • Transferable Powertrain
    5 years/60,000 miles
  • Bumper to Bumper
    3 years/36,000 miles
  • Corrosion
    3 years/36,000 miles
  • Complimentary Factory Scheduled Maint.
    2 years/20,000 miles

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Listed on January 13, 2026 (3 months ago)
10 similar vehicles available nationwide
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This Used 2018 GMC Sierra 3500HD SLT is available for drivers in Morgantown, Uniontown, Connellsville, Mount Pleasant, Belle Vernon, Waynesburg, Monongahela, Charleroi ...

Cruz™ Disclaimer: Vehicle details shown on this site are provided by sellers or third parties. Cruz™ does not independently verify this information and is not liable for its accuracy. All services and content are offered without any warranty, either expressed or implied. Learn more here.MPG & Max Range: Fuel economy estimates are provided by the EPA and are intended for comparison purposes only. Your actual mileage will vary depending on driving conditions, vehicle condition, and other factors.Price: Prices shown may not include taxes, fees, or other charges. Prices and availability are subject to change without notice. Contact the seller for the most current pricing information.Options & Features: Installed options may not be shown. Contact the seller for more information about available features and options.