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  • Summit White 2018 GMC Sierra 1500 SLESummit White 2018 GMC Sierra 1500 SLESummit White 2018 GMC Sierra 1500 SLESummit White 2018 GMC Sierra 1500 SLESummit White 2018 GMC Sierra 1500 SLESummit White 2018 GMC Sierra 1500 SLE

    $24,995

    58,128 mi.
    Est. $453/mo

    South Easton Motor Sales

    4.9
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    South Easton, MA (11 mi)

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  • White Frost Tricoat 2018 GMC Sierra 1500 SLTWhite Frost Tricoat 2018 GMC Sierra 1500 SLTWhite Frost Tricoat 2018 GMC Sierra 1500 SLTWhite Frost Tricoat 2018 GMC Sierra 1500 SLTWhite Frost Tricoat 2018 GMC Sierra 1500 SLT

    $27,988

    68,200 mi.
    Est. $507/mo

    Ocean Honda of Hanover

    4.6
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    Hanover, MA (16 mi)
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  • Dark Slate Metallic 2018 GMC Sierra 1500 BaseDark Slate Metallic 2018 GMC Sierra 1500 BaseDark Slate Metallic 2018 GMC Sierra 1500 Base

    $20,195

    108,236 mi.
    Est. $366/mo

    Mastria GMC Cadillac

    4.5
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    Raynham, MA (10 mi)
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  • Red 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLE

    $28,599

    $300
    34,832 mi.
    Est. $518/mo

    DriveMax

    3.2
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    West Bridgewater, MA (9 mi)
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  • Onyx Black 2018 GMC Sierra 1500 DenaliOnyx Black 2018 GMC Sierra 1500 DenaliOnyx Black 2018 GMC Sierra 1500 DenaliOnyx Black 2018 GMC Sierra 1500 DenaliOnyx Black 2018 GMC Sierra 1500 DenaliOnyx Black 2018 GMC Sierra 1500 Denali

    $32,450

    87,785 mi.
    Est. $588/mo

    Assembly Square Auto Sales

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    Somerville, MA (30 mi)
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  • White Frost Tricoat 2018 GMC Sierra 1500 DenaliWhite Frost Tricoat 2018 GMC Sierra 1500 DenaliWhite Frost Tricoat 2018 GMC Sierra 1500 DenaliWhite Frost Tricoat 2018 GMC Sierra 1500 DenaliWhite Frost Tricoat 2018 GMC Sierra 1500 DenaliWhite Frost Tricoat 2018 GMC Sierra 1500 Denali

    $29,995

    96,329 mi.
    Est. $543/mo

    Courtesy Mitsubishi

    4.4
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    Attleboro, MA (27 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 1500 SLEQuicksilver Metallic 2018 GMC Sierra 1500 SLEQuicksilver Metallic 2018 GMC Sierra 1500 SLEQuicksilver Metallic 2018 GMC Sierra 1500 SLEQuicksilver Metallic 2018 GMC Sierra 1500 SLEQuicksilver Metallic 2018 GMC Sierra 1500 SLE

    $23,332

    102,155 mi.
    Est. $423/mo

    Prestige Mitsubishi

    4.9
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    East Providence, RI (29 mi)
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  • Brown 2018 GMC Sierra 1500 DenaliBrown 2018 GMC Sierra 1500 DenaliBrown 2018 GMC Sierra 1500 DenaliBrown 2018 GMC Sierra 1500 DenaliBrown 2018 GMC Sierra 1500 DenaliBrown 2018 GMC Sierra 1500 Denali

    $24,950

    130,977 mi.
    Est. $452/mo

    Assembly Square Auto Sales

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    Somerville, MA (30 mi)
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  • GRAY 2018 GMC Sierra 1500 SLTGRAY 2018 GMC Sierra 1500 SLTGRAY 2018 GMC Sierra 1500 SLTGRAY 2018 GMC Sierra 1500 SLTGRAY 2018 GMC Sierra 1500 SLTGRAY 2018 GMC Sierra 1500 SLT

    $24,995

    101,200 mi.
    Est. $453/mo

    RRR Auto Sales

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    Fairhaven, MA (24 mi)
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  • Onyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLT

    $31,093

    84,290 mi.
    Est. $563/mo

    Mercedes-Benz of Westwood

    4.6
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    Westwood, MA (23 mi)
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  • $29,712

    85,371 mi.
    Est. $538/mo

    Battles Buick GMC

    4.9
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    Bourne, MA (23 mi)
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  • $29,435

    91,370 mi.
    Est. $533/mo

    Parkway Toyota of Boston

    4.7
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    Boston, MA (25 mi)
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  • Not Priced

    58,679 mi.

    Parkway Honda of Boston

    4.5
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    Boston, MA (25 mi)
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  • Dark Slate Metallic 2018 GMC Sierra 1500 SLEDark Slate Metallic 2018 GMC Sierra 1500 SLEDark Slate Metallic 2018 GMC Sierra 1500 SLEDark Slate Metallic 2018 GMC Sierra 1500 SLEDark Slate Metallic 2018 GMC Sierra 1500 SLEDark Slate Metallic 2018 GMC Sierra 1500 SLE

    $21,307

    119,378 mi.
    Est. $386/mo

    Irwin Automotive Group

    4.7
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    Free delivery from Laconia, NH (112 mi)
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  • Black 2018 GMC Sierra 1500 DenaliBlack 2018 GMC Sierra 1500 DenaliBlack 2018 GMC Sierra 1500 DenaliBlack 2018 GMC Sierra 1500 DenaliBlack 2018 GMC Sierra 1500 DenaliBlack 2018 GMC Sierra 1500 Denali

    $34,998

    82,968 mi.
    Est. $634/mo

    CarMax Cleveland East

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    $549 delivery to Norwood, MA (21 mi)
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  • Onyx Black 2018 GMC Sierra 1500 SLEOnyx Black 2018 GMC Sierra 1500 SLEOnyx Black 2018 GMC Sierra 1500 SLEOnyx Black 2018 GMC Sierra 1500 SLEOnyx Black 2018 GMC Sierra 1500 SLEOnyx Black 2018 GMC Sierra 1500 SLE

    $24,544

    88,505 mi.
    Est. $445/mo

    Milford Nissan

    4.9
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    Milford, MA (35 mi)
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  • White 2018 GMC Sierra 1500 DenaliWhite 2018 GMC Sierra 1500 DenaliWhite 2018 GMC Sierra 1500 DenaliWhite 2018 GMC Sierra 1500 DenaliWhite 2018 GMC Sierra 1500 DenaliWhite 2018 GMC Sierra 1500 Denali

    $24,595

    137,149 mi.
    Est. $446/mo

    Alliance Motor Group

    4.6
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    Middleton, MA (44 mi)
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  • Red 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLERed 2018 GMC Sierra 1500 SLE

    $14,498

    $500
    145,850 mi.
    Est. $263/mo

    Bypex

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    Maynard, MA (43 mi)
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  • Woodland Green 2018 GMC Sierra 1500 BaseWoodland Green 2018 GMC Sierra 1500 BaseWoodland Green 2018 GMC Sierra 1500 BaseWoodland Green 2018 GMC Sierra 1500 BaseWoodland Green 2018 GMC Sierra 1500 BaseWoodland Green 2018 GMC Sierra 1500 Base

    $19,689

    109,615 mi.
    Est. $357/mo

    Auto Factory

    4.2
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    Peabody, MA (39 mi)
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  • Dark Slate Metallic 2018 GMC Sierra 1500 Denali

    $32,575

    86,269 mi.
    Est. $590/mo

    Autobahn USA Westborough

    4.8
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    Westboro, MA (43 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $61,778 5 Good deals
2025 GMC Sierra 1500 $52,308 16 Good deals
2024 GMC Sierra 1500 $49,262 7 Great deals
2023 GMC Sierra 1500 $47,023 11 Great deals
2022 GMC Sierra 1500 $43,821 5 Great deals
2021 GMC Sierra 1500 $36,488 5 Great deals
2020 GMC Sierra 1500 $34,537 6 Good deals

About the 2018 GMC Sierra 1500

Basics

Base shown (base trim).

Seating
3
Door count
2
Drivetrain
Rear-wheel drive
Combined MPG
20
Transmission
6-Speed A/T
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
Side view of the 2018 GMC Sierra 1500
FAQs

How much does the 2018 GMC Sierra 1500 cost?

The 2018 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 1500 is $27,530, with pricing starting at $899.

What is the MPG of the 2018 GMC Sierra 1500?

The 2018 GMC Sierra 1500 offers up to 18 MPG in city driving and 24 MPG on the highway for a combined rating of 20 MPG.

These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle trim, driving conditions, driving habits, vehicle maintenance, and other factors.

Is the 2018 GMC Sierra 1500 reliable?

The 2018 GMC Sierra 1500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2018 Sierra 1500 owners.

Is the 2018 GMC Sierra 1500 a good truck?

Below are the Cars.com consumer ratings for the 2018 GMC Sierra 1500.

(172 reviews)
Rating breakdown (out of 5):
Comfort
4.9
Interior
4.8
Performance
4.7
Value
4.6
Exterior
4.8
Reliability
4.7
Ratings (172 reviews)

93% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.8
Performance
4.7
Value
4.6
Exterior
4.8
Reliability
4.7
Trims

Base (10 styles)

Style
2WD Crew Cab 143.5" 4WD Crew Cab 143.5" 4WD Double Cab 143.5" 2WD Double Cab 143.5" 4WD Crew Cab 153.0" 2WD Crew Cab 153.0" 4WD Reg Cab 119.0" 2WD Reg Cab 119.0" 2WD Reg Cab 133.0" 4WD Reg Cab 133.0"
Inventory price
Starting at $35,500 Starting at $38,700 Starting at $37,000 Starting at $33,000 Starting at $40,100 Starting at $36,900 Starting at $32,900 Starting at $29,000 Starting at $29,300 Starting at $33,200
Combined MPG
20 19 19 20 18 19 19 20 20 19
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

Denali (3 styles)

Style
4WD Crew Cab 153.0" Denali 2WD Crew Cab 143.5" Denali 4WD Crew Cab 143.5" Denali
Inventory price
Starting at $56,300 Starting at $52,900 Starting at $56,000
Combined MPG
17 18 17
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)

SLE (10 styles)

Style
4WD Double Cab 143.5" SLE 2WD Double Cab 143.5" SLE 4WD Crew Cab 153.0" SLE 2WD Crew Cab 153.0" SLE 2WD Crew Cab 143.5" SLE 4WD Crew Cab 143.5" SLE 2WD Reg Cab 119.0" SLE 4WD Reg Cab 133.0" SLE 4WD Reg Cab 119.0" SLE 2WD Reg Cab 133.0" SLE
Inventory price
Starting at $42,100 Starting at $38,300 Starting at $46,100 Starting at $42,100 Starting at $40,700 Starting at $44,700 Starting at $35,700 Starting at $39,900 Starting at $39,600 Starting at $35,800
Combined MPG
19 20 18 19 20 19 20 19 19 20
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

SLT (5 styles)

Style
2WD Double Cab 143.5" SLT 4WD Crew Cab 143.5" SLT 2WD Crew Cab 143.5" SLT 4WD Double Cab 143.5" SLT 4WD Crew Cab 153.0" SLT
Inventory price
Starting at $42,800 Starting at $48,400 Starting at $45,200 Starting at $46,000 Starting at $48,700
Combined MPG
19 17 18 18 17
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
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