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  • Titanium Rush Metallic 2022 GMC Sierra 1500 SLTTitanium Rush Metallic 2022 GMC Sierra 1500 SLTTitanium Rush Metallic 2022 GMC Sierra 1500 SLTTitanium Rush Metallic 2022 GMC Sierra 1500 SLTTitanium Rush Metallic 2022 GMC Sierra 1500 SLTTitanium Rush Metallic 2022 GMC Sierra 1500 SLT

    $44,963

    31,830 mi.
    Est. $798/mo

    Circle Buick GMC

    4.1
    Check Availability
    Highland, IN (26 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

    $34,999

    41,350 mi.
    Est. $621/mo

    Mitch Smith Chevrolet

    4.7
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    Cullman, AL (536 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

    $17,235

    199,327 mi.
    Est. $306/mo

    Indy Chrysler Dodge Jeep Ram

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    Brownsburg, IN (155 mi)
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  • Bronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLT

    $25,369

    104,143 mi.
    Est. $450/mo

    Tampa Honda

    4.5
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    Tampa, FL (1,000 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

    $21,750

    $500
    87,030 mi.
    Est. $386/mo

    Fairway Ford

    4.8
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    Canfield, OH (361 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

    $25,991

    101,441 mi.
    Est. $461/mo

    Chevrolet of Everett

    4.7
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    Everett, WA (1,728 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

    $16,434

    155,743 mi.
    Est. $292/mo

    Lithia Ford Idaho Falls

    4.8
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    Idaho Falls, ID (1,241 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

    $24,999

    110,609 mi.
    Est. $444/mo

    Jaber Motors

    5.0
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    Reedley, CA (1,731 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

    $21,999

    131,955 mi.
    Est. $391/mo

    Auto Warehouse - Ft. Collins

    5.0
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    Fort Collins, CO (909 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

    $26,549

    79,611 mi.
    Est. $471/mo

    Dean Team Brentwood

    5.0
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    Brentwood, MO (268 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

    $22,000

    $240
    129,535 mi.
    Est. $391/mo

    Ed Martin Chrysler Dodge Jeep RAM

    4.7
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    Anderson, IN (163 mi)
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  • Bronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLT

    $25,686

    $600
    100,036 mi.
    Est. $456/mo

    Dan Cummins Chrysler Dodge Jeep RAM of Paris

    4.8
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    Paris, KY (311 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

    $20,999

    146,524 mi.
    Est. $373/mo

    Car Choice

    4.1
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    Denver, CO (915 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

    $28,295

    $300
    96,672 mi.
    Est. $502/mo

    DriveTime of Dallas

    5.0
    Check Availability
    Dallas, TX (814 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

    $23,943

    117,145 mi.
    Est. $425/mo

    G Motors

    4.4
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    Tomball, TX (935 mi)
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  • Bronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLT

    $26,465

    86,244 mi.
    Est. $470/mo

    Beaverton Car Company

    4.8
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    Beaverton, OR (1,770 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

    $19,995

    141,555 mi.
    Est. $355/mo

    Blue Line Auto Sales & MKE Motor Cars

    5.0
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    Muskego, WI (75 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

    $20,348

    150,618 mi.
    Est. $361/mo

    Lexdan Automotive

    4.8
    Check Availability
    Maplewood, MN (348 mi)
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  • White 2015 GMC Sierra 1500 SLTWhite 2015 GMC Sierra 1500 SLTWhite 2015 GMC Sierra 1500 SLTWhite 2015 GMC Sierra 1500 SLTWhite 2015 GMC Sierra 1500 SLTWhite 2015 GMC Sierra 1500 SLT

    $26,998

    99,713 mi.
    Est. $479/mo

    CarMax Salt Lake (South Jordan)

    4.4
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    South Jordan, UT (1,261 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

    $26,995

    $990
    105,426 mi.
    Est. $479/mo

    Gresham Subaru

    4.8
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    Gresham, OR (1,742 mi)
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  • Bronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLTBronze Alloy Metallic 2015 GMC Sierra 1500 SLT

    $25,291

    86,646 mi.
    Est. $449/mo

    Jarrett Scott Ford

    4.4
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    Plant City, FL (1,008 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

    $25,998

    86,708 mi.
    Est. $462/mo

    CarMax Birmingham

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    Hoover, AL (591 mi)
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  • Silver 2015 GMC Sierra 1500 SLTSilver 2015 GMC Sierra 1500 SLTSilver 2015 GMC Sierra 1500 SLTSilver 2015 GMC Sierra 1500 SLTSilver 2015 GMC Sierra 1500 SLTSilver 2015 GMC Sierra 1500 SLT

    $11,995

    243,000 mi.
    Est. $213/mo

    Frieling Auto Sales

    Check Availability
    Manhattan, KS (503 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

    $16,950

    $1K
    157,404 mi.
    Est. $301/mo

    Leshen Auto Sales

    Check Availability
    Des Moines, IA (309 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

    $24,997

    101,065 mi.
    Est. $444/mo

    Huntsville Trucks

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    Huntsville, AL (499 mi)
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  • Light Steel Gray Metallic 2015 GMC Sierra 1500 SLTLight Steel Gray Metallic 2015 GMC Sierra 1500 SLTLight Steel Gray Metallic 2015 GMC Sierra 1500 SLTLight Steel Gray Metallic 2015 GMC Sierra 1500 SLTLight Steel Gray Metallic 2015 GMC Sierra 1500 SLTLight Steel Gray Metallic 2015 GMC Sierra 1500 SLT

    $26,603

    $211
    89,648 mi.
    Est. $472/mo

    Executive Auto Center

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    Fresno, CA (1,743 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLT 56 Great deals
2025 GMC Sierra 1500 SLT $45,816 116 Great deals
2024 GMC Sierra 1500 SLT $46,458 111 Great deals
2023 GMC Sierra 1500 SLT $44,358 71 Great deals
2022 GMC Sierra 1500 SLT $40,505 62 Great deals
2021 GMC Sierra 1500 SLT $35,829 69 Great deals
2020 GMC Sierra 1500 SLT $34,083 63 Great deals
2019 GMC Sierra 1500 SLT $32,796 32 Great deals
2018 GMC Sierra 1500 SLT $28,013 61 Great deals
2017 GMC Sierra 1500 SLT $24,944 21 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 $21,821, with pricing starting at $10,999.

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