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  • Cardinal Red 2018 GMC Sierra 2500 SLTCardinal Red 2018 GMC Sierra 2500 SLTCardinal Red 2018 GMC Sierra 2500 SLTCardinal Red 2018 GMC Sierra 2500 SLTCardinal Red 2018 GMC Sierra 2500 SLTCardinal Red 2018 GMC Sierra 2500 SLT

    $42,988

    95,349 mi.
    Est. $808/mo

    O'Meara GMC

    3.0
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    Thornton, CO (917 mi)

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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $40,755

    112,402 mi.
    Est. $766/mo

    Kunes Buick GMC of Stoughton

    4.3
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    Stoughton, WI (110 mi)

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  • Summit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLT

    $39,868

    $1.5K
    119,958 mi.
    Est. $749/mo

    Gettel Toyota of Charlotte County

    4.4
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    Punta Gorda, FL (1,081 mi)
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  • Black 2018 GMC Sierra 2500 SLTBlack 2018 GMC Sierra 2500 SLTBlack 2018 GMC Sierra 2500 SLTBlack 2018 GMC Sierra 2500 SLTBlack 2018 GMC Sierra 2500 SLTBlack 2018 GMC Sierra 2500 SLT

    $45,075

    83,634 mi.
    Est. $847/mo

    Green Buick GMC

    4.3
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    Davenport, IA (151 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $33,900

    $2K
    139,876 mi.
    Est. $637/mo

    Kuehn Motor Company, Rochester

    4.9
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    Rochester, MN (289 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $35,790

    80,068 mi.
    Est. $673/mo

    Cars 4 U LLC

    4.3
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    Knoxville, TN (451 mi)
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  • Stone Blue Metallic 2018 GMC Sierra 2500 SLTStone Blue Metallic 2018 GMC Sierra 2500 SLTStone Blue Metallic 2018 GMC Sierra 2500 SLTStone Blue Metallic 2018 GMC Sierra 2500 SLTStone Blue Metallic 2018 GMC Sierra 2500 SLTStone Blue Metallic 2018 GMC Sierra 2500 SLT

    $40,995

    108,773 mi.
    Est. $771/mo

    Indy Auto Man - Westfield

    4.4
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    Westfield, IN (150 mi)
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  • Summit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLT

    $30,000

    $555
    113,298 mi.
    Est. $564/mo

    Roy O'Brien Ford

    4.5
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    Saint Clair Shores, MI (246 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLT

    $42,999

    115,833 mi.
    Est. $808/mo

    Lumin Folsom Mitsubishi

    4.3
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    Folsom, CA (1,773 mi)
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  • Summit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLT

    $29,164

    206,970 mi.
    Est. $548/mo

    Freedom Chrysler Dodge Jeep Ram of Lexington

    4.4
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    Lexington, KY (316 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $39,775

    102,369 mi.
    Est. $748/mo

    Lithia Chevrolet GMC of Helena

    4.3
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    Helena, MT (1,245 mi)
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  • White 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLT

    $29,975

    192,551 mi.
    Est. $563/mo

    D & J Auto Sales

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    JOPLIN, MO (494 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $23,995

    268,452 mi.
    Est. $451/mo

    Auto Village

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    Ann Arbor, MI (199 mi)
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  • White 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLTWhite 2018 GMC Sierra 2500 SLT

    $44,219

    $780
    48,638 mi.
    Est. $831/mo

    KNB Motors Inc

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    Northlake, IL (15 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLT

    $23,995

    226,796 mi.
    Est. $451/mo

    Texas Truck Barn, LLC

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    Fort Worth, TX (829 mi)
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  • Brown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLT

    $42,995

    94,645 mi.
    Est. $808/mo

    US 30 Auto Sales

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    New Lenox, IL (31 mi)
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  • Brown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLTBrown 2018 GMC Sierra 2500 SLT

    $39,990

    101,491 mi.
    Est. $752/mo

    Million Motors

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    Adel, IA (330 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $44,927

    $968
    70,021 mi.
    Est. $844/mo

    All Star Ford

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    Prairieville, LA (820 mi)
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  • Summit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLTSummit White 2018 GMC Sierra 2500 SLT

    $33,275

    151,537 mi.
    Est. $625/mo

    Uniworld Auto Sales

    3.8
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    Greensboro, NC (580 mi)
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  • Red Quartz Tintcoat 2018 GMC Sierra 2500 SLTRed Quartz Tintcoat 2018 GMC Sierra 2500 SLTRed Quartz Tintcoat 2018 GMC Sierra 2500 SLTRed Quartz Tintcoat 2018 GMC Sierra 2500 SLTRed Quartz Tintcoat 2018 GMC Sierra 2500 SLTRed Quartz Tintcoat 2018 GMC Sierra 2500 SLT

    $50,988

    42,659 mi.
    Est. $958/mo

    Jake Sweeney Chrysler Jeep Dodge

    4.2
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    Cincinnati, OH (245 mi)
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  • Onyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLTOnyx Black 2018 GMC Sierra 2500 SLT

    $46,380

    $700
    109,955 mi.
    Est. $872/mo

    Bleecker Buick GMC

    4.3
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    Red Springs, NC (670 mi)
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  • Quartz 2018 GMC Sierra 2500 SLTQuartz 2018 GMC Sierra 2500 SLTQuartz 2018 GMC Sierra 2500 SLTQuartz 2018 GMC Sierra 2500 SLTQuartz 2018 GMC Sierra 2500 SLTQuartz 2018 GMC Sierra 2500 SLT

    $52,798

    79,255 mi.
    Est. $992/mo

    i.g. Burton Lewes Automall Chevrolet Buick GMC

    4.6
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    Lewes, DE (692 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLTQuicksilver Metallic 2018 GMC Sierra 2500 SLT

    $36,980

    147,354 mi.
    Est. $695/mo

    Dillon's Auto Supercenter

    3.0
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    Lincoln, NE (474 mi)
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  • Deep Mahogany 2018 GMC Sierra 2500 SLTDeep Mahogany 2018 GMC Sierra 2500 SLTDeep Mahogany 2018 GMC Sierra 2500 SLTDeep Mahogany 2018 GMC Sierra 2500 SLTDeep Mahogany 2018 GMC Sierra 2500 SLTDeep Mahogany 2018 GMC Sierra 2500 SLT

    $45,777

    72,500 mi.
    Est. $860/mo

    Sullivan Motor Company Inc.

    3.2
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    Mesa, AZ (1,443 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 SLT 2 Good deals
2025 GMC Sierra 2500 SLT $68,068 23 Great deals
2024 GMC Sierra 2500 SLT $62,388 29 Great deals
2023 GMC Sierra 2500 SLT $54,412 24 Good deals
2022 GMC Sierra 2500 SLT $49,177 8 Great deals
2021 GMC Sierra 2500 SLT $47,959 9 Great deals
2020 GMC Sierra 2500 SLT $45,231 11 Great deals
2017 GMC Sierra 2500 SLT $34,982 5 Great deals

About the 2018 GMC Sierra 2500 SLT

Basics

SLT shown.

Seating
5
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
0
Transmission
6-Speed A/T
Engine
360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)
Side view of the 2018 GMC Sierra 2500 SLT
FAQs

How much does the 2018 GMC Sierra 2500 SLT cost?

The 2018 GMC Sierra 2500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 2500 SLT is $39,138, with pricing starting at $20,998.

What are some similar vehicles and competitors of the 2018 GMC Sierra 2500 SLT?

The 2018 GMC Sierra 2500 SLT compares to and/or competes against the following vehicles:


Is the 2018 GMC Sierra 2500 SLT reliable?

The 2018 GMC Sierra 2500 has an average reliability rating of 4.8 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2018 Sierra 2500 owners.

Ratings (37 reviews)

94% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
5.0
Value
4.8
Exterior
4.9
Reliability
4.8
Trims

SLT (8 styles)

Style
2WD Double Cab 158.1" SLT 4WD Double Cab 144.2" SLT 4WD Crew Cab 167.7" SLT 4WD Crew Cab 153.7" SLT 2WD Crew Cab 167.7" SLT 2WD Crew Cab 153.7" SLT 4WD Double Cab 158.1" SLT 2WD Double Cab 144.2" SLT
Inventory price
Starting at $48,000 Starting at $50,900 Starting at $53,600 Starting at $53,400 Starting at $50,500 Starting at $50,300 Starting at $51,100 Starting at $47,800
Combined MPG
0 0 0 0 0 0 0 0
Engine
360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)
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GMC Sierra 2500 trims