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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

    $63,000

    Est. $1,131/mo

    Koons Woodbridge Buick GMC

    4.2
    Check Availability
    Woodbridge, VA (9 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

    $63,377

    MSRP $67,740

    Est. $1,138/mo

    Brandywine Buick GMC

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    Brandywine, MD (25 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

    $49,995

    $1K
    16,719 mi.
    Est. $898/mo

    EAG Motor Sports LLC

    Check Availability
    Fredericksburg, VA (17 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

    $59,851

    MSRP $69,675

    Est. $1,074/mo

    Sheehy GMC of Fredericksburg

    4.2
    Check Availability
    Fredericksburg, VA (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $59,840

    $5.2K
    Est. $1,074/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLTOnyx Black 2026 GMC Sierra 1500 SLT

    $62,635

    $3.2K
    Est. $1,124/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 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

    $64,345

    $4.2K
    Est. $1,155/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLT

    $60,840

    Est. $1,092/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLTSterling Metallic 2026 GMC Sierra 1500 SLT

    $63,745

    $4.2K
    Est. $1,144/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $54,000

    Est. $969/mo

    Koons Woodbridge Buick GMC

    4.2
    Check Availability
    Woodbridge, VA (9 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

    $60,440

    $5.2K
    Est. $1,085/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Summit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLTSummit White 2026 GMC Sierra 1500 SLT

    $65,460

    Est. $1,175/mo

    Koons Woodbridge Buick GMC

    4.2
    Check Availability
    Woodbridge, VA (9 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

    $48,994

    $3.8K
    15,374 mi.
    Est. $880/mo

    Radley Chevrolet

    4.5
    Check Availability
    Fredericksburg, VA (23 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

    $63,235

    $3.2K
    Est. $1,135/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 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

    $56,340

    Est. $1,011/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 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

    $56,835

    Est. $1,020/mo

    Koons of Tysons Chevrolet GMC

    4.5
    Check Availability
    Vienna, VA (28 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 SLT

    $59,125

    $2.2K
    Est. $1,061/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (23 mi)
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  • Volcanic Red Tintcoat 2026 GMC Sierra 1500 SLTVolcanic Red Tintcoat 2026 GMC Sierra 1500 SLTVolcanic Red Tintcoat 2026 GMC Sierra 1500 SLTVolcanic Red Tintcoat 2026 GMC Sierra 1500 SLTVolcanic Red Tintcoat 2026 GMC Sierra 1500 SLTVolcanic Red Tintcoat 2026 GMC Sierra 1500 SLT

    $64,091

    MSRP $72,110

    Est. $1,151/mo

    Sheehy GMC of Fredericksburg

    4.2
    Check Availability
    Fredericksburg, VA (23 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

    $60,306

    MSRP $70,170

    Est. $1,083/mo

    Sheehy GMC of Fredericksburg

    4.2
    Check Availability
    Fredericksburg, VA (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $57,725

    $2.2K
    Est. $1,036/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (23 mi)
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  • Volcanic Red 2026 GMC Sierra 1500 SLT

    $58,725

    $2.2K
    Est. $1,054/mo

    Joyce Koons Honda Buick GMC

    4.6
    Check Availability
    Manassas, VA (23 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

    $62,500

    Est. $1,122/mo

    Koons Woodbridge Buick GMC

    4.2
    Check Availability
    Woodbridge, VA (9 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

    $52,367

    $529
    10,019 mi.
    Est. $940/mo

    Bob Johnson Used

    4.0
    Check Availability
    $474 delivery from Rochester, NY (317 mi)
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  • Glacier White 2026 GMC Sierra 1500 SLTGlacier White 2026 GMC Sierra 1500 SLTGlacier White 2026 GMC Sierra 1500 SLTGlacier White 2026 GMC Sierra 1500 SLTGlacier White 2026 GMC Sierra 1500 SLTGlacier White 2026 GMC Sierra 1500 SLT

    $55,939

    $1K
    Est. $1,004/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,373 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