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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $51,394

    15,732 mi.
    Est. $929/mo

    Fitzgerald Chevrolet Frederick

    4.5
    Check Availability
    Frederick, MD (24 mi)
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  • White 2026 GMC Sierra 1500 SLTWhite 2026 GMC Sierra 1500 SLTWhite 2026 GMC Sierra 1500 SLTWhite 2026 GMC Sierra 1500 SLTWhite 2026 GMC Sierra 1500 SLTWhite 2026 GMC Sierra 1500 SLT

    $44,900

    15,398 mi.
    Est. $811/mo

    Eagle Automotives

    Check Availability
    Arlington, VA (20 mi)
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  • Titanium Rush Metallic 2026 GMC Sierra 1500 SLTTitanium Rush Metallic 2026 GMC Sierra 1500 SLTTitanium Rush Metallic 2026 GMC Sierra 1500 SLTTitanium Rush Metallic 2026 GMC Sierra 1500 SLTTitanium Rush Metallic 2026 GMC Sierra 1500 SLTTitanium Rush Metallic 2026 GMC Sierra 1500 SLT

    $56,715

    $4K
    Est. $1,025/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (26 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 SLTVolcanic Red 2026 GMC Sierra 1500 SLTVolcanic Red 2026 GMC Sierra 1500 SLTVolcanic Red 2026 GMC Sierra 1500 SLTVolcanic Red 2026 GMC Sierra 1500 SLTVolcanic Red 2026 GMC Sierra 1500 SLT

    $56,270

    $3K
    Est. $1,017/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (26 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $65,670

    Est. $1,187/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $55,045

    MSRP $64,495

    Est. $995/mo

    Koons Clarksville Chevy GMC

    4.5
    Check Availability
    Clarksville, MD (18 mi)
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  • Glacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLT

    $64,710

    MSRP $72,660

    Est. $1,169/mo

    Koons Clarksville Chevy GMC

    4.5
    Check Availability
    Clarksville, MD (18 mi)
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  • Glacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLT

    $64,710

    MSRP $72,660

    Est. $1,169/mo

    Koons Clarksville Chevy GMC

    4.5
    Check Availability
    Clarksville, MD (18 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLT

    $57,830

    Est. $1,045/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Glacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLT

    $62,435

    Est. $1,128/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Glacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLT

    $58,430

    Est. $1,056/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $62,045

    $500
    Est. $1,121/mo

    Criswell Chevrolet GMC

    4.8
    Check Availability
    Gaithersburg, MD (3 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLT

    $61,399

    Est. $1,110/mo

    Leesburg Buick GMC

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    Leesburg, VA (17 mi)
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  • Glacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLTGlacier White Tricoat 2026 GMC Sierra 1500 SLT

    $58,430

    Est. $1,056/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $57,335

    Est. $1,036/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 SLT

    $56,670

    $3K
    Est. $1,024/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (26 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $68,054

    Est. $1,230/mo

    Leesburg Buick GMC

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    Leesburg, VA (17 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $55,270

    $3K
    Est. $999/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (26 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $57,335

    Est. $1,036/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $61,084

    $462
    Est. $1,104/mo

    Autonation Buick GMC Laurel

    4.2
    Check Availability
    Laurel, MD (22 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $55,045

    $500

    MSRP $64,495

    Est. $995/mo

    Koons Clarksville Chevy GMC

    4.5
    Check Availability
    Clarksville, MD (18 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $56,715

    $4K
    Est. $1,025/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (26 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLT

    $61,735

    Est. $1,116/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $64,630

    Est. $1,168/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (14 mi)
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  • White 2026 GMC Sierra 1500 SLT

    $53,495

    Est. $967/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $265 delivery from Reidsville, NC (233 mi)
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  • Sterling 2026 GMC Sierra 1500 SLTSterling 2026 GMC Sierra 1500 SLTSterling 2026 GMC Sierra 1500 SLTSterling 2026 GMC Sierra 1500 SLTSterling 2026 GMC Sierra 1500 SLTSterling 2026 GMC Sierra 1500 SLT

    $58,862

    Est. $1,064/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,372 delivery from Collinsville, IL (687 mi)
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About the 2026 GMC Sierra 1500 SLT

Basics

SLT shown.

Seating
5
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
17
Transmission
10-Speed A/T
Engine
305.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Diesel Fuel)
Side view of the 2026 GMC Sierra 1500 SLT
FAQs

How much does the 2026 GMC Sierra 1500 SLT cost?

The 2026 GMC Sierra 1500 SLT price depends on optional features. Prices typically start at $55,100.

What is the MPG of the 2026 GMC Sierra 1500 SLT?

The 2026 GMC Sierra 1500 SLT offers up to 16 MPG in city driving and 20 MPG on the highway for a combined rating of 17 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 2026 GMC Sierra 1500 SLT?

The 2026 GMC Sierra 1500 SLT compares to and/or competes against the following vehicles:


Is the 2026 GMC Sierra 1500 SLT reliable?

The 2026 GMC Sierra 1500 has an average reliability rating of 4.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2026 Sierra 1500 owners.

Ratings (4 reviews)

75% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.0
Interior
4.0
Performance
4.2
Value
3.5
Exterior
4.2
Reliability
4.5
Trims

SLT (3 styles)

Style
2WD Crew Cab 147" SLT 4WD Crew Cab 147" SLT 4WD Crew Cab 157" SLT
Inventory price
Starting at $55,100 Starting at $58,200 Starting at $58,900
Combined MPG
17 16 16
Engine
305.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Diesel 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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2026 GMC Sierra 1500 SLT by city

GMC Sierra 1500 trims