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  • Red Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLT

    $29,305

    81,783 mi.
    Est. $548/mo

    Cardinal Buick GMC Inc.

    3.7
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    Belleville, IL (24 mi)

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  • Onyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLT

    $29,995

    39,228 mi.
    Est. $561/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (19 mi)

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  • Onyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLTOnyx Black 2018 GMC Sierra 1500 SLT

    $26,495

    98,751 mi.
    Est. $495/mo

    Continental Auto Sales of Maryland Heights

    4.1
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    Maryland Heights, MO (8 mi)
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  • White Frost Tri-Coat 2018 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2018 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2018 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2018 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2018 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2018 GMC Sierra 1500 SLT

    $30,673

    75,857 mi.
    Est. $574/mo

    Cardinal Buick GMC Inc.

    3.7
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    Belleville, IL (24 mi)
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  • Summit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLT

    $21,995

    151,117 mi.
    Est. $411/mo

    Laura Buick GMC

    4.6
    Check Availability
    Collinsville, IL (19 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 SLTWhite Frost Tricoat 2018 GMC Sierra 1500 SLT

    $23,035

    $368
    144,787 mi.
    Est. $431/mo

    Dave Sinclair Buick GMC

    4.9
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    Saint Louis, MO (16 mi)
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  • Cardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLT

    $24,697

    131,742 mi.
    Est. $462/mo

    Dave Sinclair Buick GMC

    4.9
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    Saint Louis, MO (16 mi)
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  • Deep Mahogany Metallic 2018 GMC Sierra 1500 SLEDeep Mahogany Metallic 2018 GMC Sierra 1500 SLEDeep Mahogany Metallic 2018 GMC Sierra 1500 SLEDeep Mahogany Metallic 2018 GMC Sierra 1500 SLEDeep Mahogany Metallic 2018 GMC Sierra 1500 SLEDeep Mahogany Metallic 2018 GMC Sierra 1500 SLE

    $19,995

    129,440 mi.
    Est. $374/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (19 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

    $24,995

    144,366 mi.
    Est. $467/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (19 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLT

    $22,495

    145,324 mi.
    Est. $421/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (19 mi)
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  • Summit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLTSummit White 2018 GMC Sierra 1500 SLT

    $30,888

    87,691 mi.
    Est. $578/mo

    Dave Sinclair Ford

    3.6
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    St. Louis, MO (17 mi)
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  • Stone Blue Metallic 2018 GMC Sierra 1500 SLTStone Blue Metallic 2018 GMC Sierra 1500 SLTStone Blue Metallic 2018 GMC Sierra 1500 SLTStone Blue Metallic 2018 GMC Sierra 1500 SLTStone Blue Metallic 2018 GMC Sierra 1500 SLTStone Blue Metallic 2018 GMC Sierra 1500 SLT

    $32,000

    52,864 mi.
    Est. $598/mo

    Clement Supercenter

    2.6
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    St. Charles, MO (12 mi)
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  • Red Quartz Tintcoat 2018 GMC Sierra 1500 DenaliRed Quartz Tintcoat 2018 GMC Sierra 1500 DenaliRed Quartz Tintcoat 2018 GMC Sierra 1500 DenaliRed Quartz Tintcoat 2018 GMC Sierra 1500 DenaliRed Quartz Tintcoat 2018 GMC Sierra 1500 DenaliRed Quartz Tintcoat 2018 GMC Sierra 1500 Denali

    $29,044

    $1.3K
    93,692 mi.
    Est. $543/mo

    Cardinal Buick GMC Inc.

    3.7
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    Belleville, IL (24 mi)
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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

    $22,995

    $1.5K
    89,225 mi.
    Est. $430/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (19 mi)

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  • Silver 2018 GMC Sierra 1500 SLTSilver 2018 GMC Sierra 1500 SLTSilver 2018 GMC Sierra 1500 SLTSilver 2018 GMC Sierra 1500 SLTSilver 2018 GMC Sierra 1500 SLTSilver 2018 GMC Sierra 1500 SLT

    $27,995

    90,642 mi.
    Est. $523/mo

    Jerseyville Motor Company Inc

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    Jerseyville, IL (26 mi)
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  • Onyx Black 2018 GMC Sierra 1500 SLT

    $29,500

    103,727 mi.
    Est. $552/mo

    Glendale Chrysler Dodge Jeep RAM

    4.4
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    St. Louis, MO (11 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

    $33,998

    104,166 mi.
    Est. $636/mo

    CarMax Murfreesboro

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    $149 delivery to St. Peters, MO (15 mi)
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  • Cardinal Red 2018 GMC Sierra 1500 SLECardinal Red 2018 GMC Sierra 1500 SLECardinal Red 2018 GMC Sierra 1500 SLECardinal Red 2018 GMC Sierra 1500 SLECardinal Red 2018 GMC Sierra 1500 SLECardinal Red 2018 GMC Sierra 1500 SLE

    $19,997

    107,353 mi.
    Est. $374/mo

    Auto Land Group Inc

    4.5
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    $410 delivery from Mundelein, IL (274 mi)
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  • Red Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLTRed Quartz Tintcoat 2018 GMC Sierra 1500 SLT

    $28,221

    124,190 mi.
    Est. $528/mo

    Sapaugh GM Country

    4.8
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    Herculaneum, MO (35 mi)
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  • Quicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLTQuicksilver Metallic 2018 GMC Sierra 1500 SLT

    $27,999

    121,887 mi.
    Est. $524/mo

    Steve Schmitt, Inc.

    4.9
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    Highland, IL (36 mi)
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  • Cardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLTCardinal Red 2018 GMC Sierra 1500 SLT

    $26,337

    131,786 mi.
    Est. $492/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (35 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $58,396 5 Good deals
2025 GMC Sierra 1500 $50,303 20 Great deals
2024 GMC Sierra 1500 $45,733 15 Great deals
2023 GMC Sierra 1500 $43,837 16 Good deals
2022 GMC Sierra 1500 $42,170 14 Good deals
2021 GMC Sierra 1500 $36,043 5 Great deals
2020 GMC Sierra 1500 $34,019 5 Great deals
2019 GMC Sierra 1500 $31,113 12 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 $26,926, with pricing starting at $9,667.

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.

What are some similar vehicles and competitors of the 2018 GMC Sierra 1500?

The 2018 GMC Sierra 1500 compares to and/or competes against the following vehicles:


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
4WD Reg Cab 119.0" 2WD Reg Cab 119.0" 2WD Reg Cab 133.0" 4WD Reg Cab 133.0" 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"
Inventory price
Starting at $32,900 Starting at $29,000 Starting at $29,300 Starting at $33,200 Starting at $35,500 Starting at $38,700 Starting at $37,000 Starting at $33,000 Starting at $40,100 Starting at $36,900
Combined MPG
19 20 20 19 20 19 19 20 18 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) 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)

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
2WD Reg Cab 119.0" SLE 4WD Reg Cab 133.0" SLE 4WD Reg Cab 119.0" SLE 2WD Reg Cab 133.0" SLE 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
Inventory price
Starting at $35,700 Starting at $39,900 Starting at $39,600 Starting at $35,800 Starting at $42,100 Starting at $38,300 Starting at $46,100 Starting at $42,100 Starting at $40,700 Starting at $44,700
Combined MPG
20 19 19 20 19 20 18 19 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) 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)

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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