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  • Iridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLT

    $21,988

    133,698 mi.
    Est. $413/mo

    Ventura Toyota

    5.0
    Check Availability
    Ventura, CA (1,785 mi)

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  • Quicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLT

    $18,997

    147,156 mi.
    Est. $357/mo

    Sunrise Ford

    4.2
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    Fort Pierce, FL (1,085 mi)

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  • Stone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLT

    $26,991

    68,481 mi.
    Est. $507/mo

    Spitzer Chevrolet Northfield

    4.6
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    Northfield, OH (319 mi)
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  • Quicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLTQuicksilver Metallic 2015 GMC Sierra 1500 SLT

    $19,988

    135,735 mi.
    Est. $376/mo

    Findlay Toyota

    4.7
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    Henderson, NV (1,519 mi)
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  • White Diamond Clearcoat 2015 GMC Sierra 1500 SLTWhite Diamond Clearcoat 2015 GMC Sierra 1500 SLTWhite Diamond Clearcoat 2015 GMC Sierra 1500 SLTWhite Diamond Clearcoat 2015 GMC Sierra 1500 SLTWhite Diamond Clearcoat 2015 GMC Sierra 1500 SLTWhite Diamond Clearcoat 2015 GMC Sierra 1500 SLT

    $19,490

    $155
    153,351 mi.
    Est. $366/mo

    Hawkins Chevrolet

    4.6
    Check Availability
    Fairmont, MN (367 mi)
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  • Stone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLTStone Blue Metallic 2015 GMC Sierra 1500 SLT

    $21,998

    143,692 mi.
    Est. $413/mo

    Panama City Toyota

    4.7
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    Panama City, FL (817 mi)
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  • Summit White 2015 GMC Sierra 1500 SLTSummit White 2015 GMC Sierra 1500 SLTSummit White 2015 GMC Sierra 1500 SLTSummit White 2015 GMC Sierra 1500 SLTSummit White 2015 GMC Sierra 1500 SLTSummit White 2015 GMC Sierra 1500 SLT

    $23,000

    87,030 mi.
    Est. $432/mo

    Fairway Ford

    4.8
    Check Availability
    Canfield, OH (361 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $16,995

    $1K
    172,461 mi.
    Est. $319/mo

    Glenn Chevrolet

    4.3
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    Eminence, KY (276 mi)

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  • Fire Red 2015 GMC Sierra 1500 SLTFire Red 2015 GMC Sierra 1500 SLTFire Red 2015 GMC Sierra 1500 SLTFire Red 2015 GMC Sierra 1500 SLTFire Red 2015 GMC Sierra 1500 SLTFire Red 2015 GMC Sierra 1500 SLT

    $19,995

    133,249 mi.
    Est. $376/mo

    Dick Huvaere's Richmond Chrysler Dodge Jeep RAM

    4.9
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    Richmond, MI (258 mi)
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  • Iridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLT

    $24,990

    $1K
    89,846 mi.
    Est. $470/mo

    CardinaleWay Mazda Mesa

    4.6
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    Mesa, AZ (1,435 mi)
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  • Iridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLT

    $25,998

    101,574 mi.
    Est. $489/mo

    AutoNation Ford Tustin

    4.5
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    Tustin, CA (1,730 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $19,407

    162,938 mi.
    Est. $365/mo

    Skyline Mitsubishi

    4.9
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    Thornton, CO (917 mi)
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  • Sonoma Red Metallic 2015 GMC Sierra 1500 SLTSonoma Red Metallic 2015 GMC Sierra 1500 SLTSonoma Red Metallic 2015 GMC Sierra 1500 SLTSonoma Red Metallic 2015 GMC Sierra 1500 SLTSonoma Red Metallic 2015 GMC Sierra 1500 SLTSonoma Red Metallic 2015 GMC Sierra 1500 SLT

    $21,787

    $200
    138,385 mi.
    Est. $410/mo

    Dan Cummins Chrysler Dodge Jeep RAM of Paris

    4.8
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    Paris, KY (311 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLT

    $9,500

    $500
    253,647 mi.
    Est. $179/mo

    GMC of Rochester

    4.4
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    Rochester, MN (289 mi)

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  • Blue Metallic 2015 GMC Sierra 1500 SLTBlue Metallic 2015 GMC Sierra 1500 SLTBlue Metallic 2015 GMC Sierra 1500 SLTBlue Metallic 2015 GMC Sierra 1500 SLTBlue Metallic 2015 GMC Sierra 1500 SLTBlue Metallic 2015 GMC Sierra 1500 SLT

    $20,400

    $100
    152,982 mi.
    Est. $383/mo

    Lakeside Auto Brokers

    4.1
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    Colorado Springs, CO (929 mi)
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  • Iridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLT

    $28,990

    85,479 mi.
    Est. $545/mo

    Courtesy Chrysler Dodge Jeep Ram

    4.9
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    Stonecrest, GA (598 mi)
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  • Gray 2015 GMC Sierra 1500 SLTGray 2015 GMC Sierra 1500 SLTGray 2015 GMC Sierra 1500 SLTGray 2015 GMC Sierra 1500 SLTGray 2015 GMC Sierra 1500 SLTGray 2015 GMC Sierra 1500 SLT

    $27,495

    82,502 mi.
    Est. $517/mo

    ZAG Motors Everett

    4.9
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    Everett, WA (1,730 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $16,999

    140,339 mi.
    Est. $320/mo

    Independence Auto Sale

    4.6
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    Bordentown, NJ (685 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $26,274

    80,428 mi.
    Est. $494/mo

    Mauer Chevrolet

    4.6
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    Inver Grove Heights, MN (344 mi)
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  • Emerald Green Metallic 2015 GMC Sierra 1500 SLTEmerald Green Metallic 2015 GMC Sierra 1500 SLTEmerald Green Metallic 2015 GMC Sierra 1500 SLTEmerald Green Metallic 2015 GMC Sierra 1500 SLTEmerald Green Metallic 2015 GMC Sierra 1500 SLTEmerald Green Metallic 2015 GMC Sierra 1500 SLT

    $20,995

    $556
    112,557 mi.
    Est. $395/mo

    Good Life Motors

    4.8
    Check Availability
    Nampa, ID (1,465 mi)
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  • Black 2015 GMC Sierra 1500 SLTBlack 2015 GMC Sierra 1500 SLTBlack 2015 GMC Sierra 1500 SLTBlack 2015 GMC Sierra 1500 SLTBlack 2015 GMC Sierra 1500 SLTBlack 2015 GMC Sierra 1500 SLT

    $19,572

    $423
    174,594 mi.
    Est. $368/mo

    Link Ford and RV Minong

    5.0
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    Minong, WI (359 mi)
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  • White Diamond Tricoat 2015 GMC Sierra 1500 SLTWhite Diamond Tricoat 2015 GMC Sierra 1500 SLTWhite Diamond Tricoat 2015 GMC Sierra 1500 SLTWhite Diamond Tricoat 2015 GMC Sierra 1500 SLTWhite Diamond Tricoat 2015 GMC Sierra 1500 SLTWhite Diamond Tricoat 2015 GMC Sierra 1500 SLT

    $18,900

    167,483 mi.
    Est. $355/mo

    Link Chrysler Dodge Jeep Ram

    4.7
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    Rice Lake, WI (322 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $18,999

    133,244 mi.
    Est. $357/mo

    Bowman Auto Center

    4.4
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    Clarkston, MI (221 mi)
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  • Onyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLTOnyx Black 2015 GMC Sierra 1500 SLT

    $25,881

    57,693 mi.
    Est. $486/mo

    Nissan of Everett

    4.5
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    Everett, WA (1,729 mi)
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  • RED 2015 GMC Sierra 1500 SLTRED 2015 GMC Sierra 1500 SLTRED 2015 GMC Sierra 1500 SLTRED 2015 GMC Sierra 1500 SLTRED 2015 GMC Sierra 1500 SLTRED 2015 GMC Sierra 1500 SLT

    $21,950

    158,766 mi.
    Est. $413/mo

    712 Auto Sales

    Check Availability
    Albuquerque, NM (1,123 mi)
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  • Burgundy 2015 GMC Sierra 1500 SLTBurgundy 2015 GMC Sierra 1500 SLTBurgundy 2015 GMC Sierra 1500 SLTBurgundy 2015 GMC Sierra 1500 SLTBurgundy 2015 GMC Sierra 1500 SLTBurgundy 2015 GMC Sierra 1500 SLT

    $16,495

    $500
    124,899 mi.
    Est. $310/mo

    Fairway Auto Sales

    Check Availability
    Rochester, NH (852 mi)
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  • Iridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLTIridium Metallic 2015 GMC Sierra 1500 SLT

    $17,950

    157,404 mi.
    Est. $337/mo

    Leshen Auto Sales

    Check Availability
    Des Moines, IA (309 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLT 51 Great deals
2025 GMC Sierra 1500 SLT $45,190 127 Great deals
2024 GMC Sierra 1500 SLT $45,742 108 Great deals
2023 GMC Sierra 1500 SLT $44,416 96 Great deals
2022 GMC Sierra 1500 SLT $40,597 92 Great deals
2021 GMC Sierra 1500 SLT $35,870 88 Great deals
2020 GMC Sierra 1500 SLT $33,582 78 Great deals
2019 GMC Sierra 1500 SLT $32,671 52 Great deals
2018 GMC Sierra 1500 SLT $27,958 99 Great deals
2017 GMC Sierra 1500 SLT $25,042 39 Great deals

About the 2015 GMC Sierra 1500 SLT

Basics

SLT shown.

Seating
6
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
19
Transmission
6-Speed A/T
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
Side view of the 2015 GMC Sierra 1500 SLT
FAQs

How much does the 2015 GMC Sierra 1500 SLT cost?

The 2015 GMC Sierra 1500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 1500 SLT is $20,981, with pricing starting at $9,500.

What is the MPG of the 2015 GMC Sierra 1500 SLT?

The 2015 GMC Sierra 1500 SLT offers up to 16 MPG in city driving and 23 MPG on the highway for a combined rating of 19 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 options, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2015 GMC Sierra 1500 SLT?

The 2015 GMC Sierra 1500 SLT compares to and/or competes against the following vehicles:


Is the 2015 GMC Sierra 1500 SLT reliable?

The 2015 GMC Sierra 1500 has an average reliability rating of 4.4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2015 Sierra 1500 owners.

Ratings (140 reviews)

87% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.6
Interior
4.7
Performance
4.5
Value
4.4
Exterior
4.7
Reliability
4.4
Trims

SLT (6 styles)

Style
4WD Crew Cab 143.5" SLT 2WD Crew Cab 153.0" SLT 4WD Crew Cab 153.0" SLT 2WD Crew Cab 143.5" SLT 4WD Double Cab 143.5" SLT 2WD Double Cab 143.5" SLT
Inventory price
Starting at $46,860 Starting at $44,010 Starting at $47,160 Starting at $43,710 Starting at $44,500 Starting at $41,250
Combined MPG
18 19 18 19 18 19
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) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
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GMC Sierra 1500 trims