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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

    $56,195

    MSRP $67,945

    Est. $958/mo

    Pointe GMC

    4.0
    Check Availability
    Penns Grove, NJ (15 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

    $59,865

    MSRP $68,615

    Est. $1,021/mo

    Pointe GMC

    4.0
    Check Availability
    Penns Grove, NJ (15 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

    $65,735

    $3K

    MSRP $68,735

    Est. $1,121/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (27 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

    $63,948

    MSRP $72,610

    Est. $1,090/mo

    i.g. Burton Buick GMC of Elkton

    Check Availability
    Elkton, MD (6 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

    $60,720

    MSRP $68,970

    Est. $1,035/mo

    i.g. Burton Buick GMC of Elkton

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    Elkton, MD (6 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

    $65,240

    $3K

    MSRP $68,240

    Est. $1,112/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (27 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

    $65,240

    $3K

    MSRP $68,240

    Est. $1,112/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (27 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

    $56,690

    MSRP $68,440

    Est. $967/mo

    Pointe GMC

    4.0
    Check Availability
    Penns Grove, NJ (15 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

    $56,490

    MSRP $68,240

    Est. $963/mo

    Pointe GMC

    4.0
    Check Availability
    Penns Grove, NJ (15 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

    $66,735

    $3K

    MSRP $69,735

    Est. $1,138/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (27 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

    $66,530

    $3K

    MSRP $69,530

    Est. $1,134/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (27 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $69,814

    MSRP $69,814

    Est. $1,190/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Summit White 2026 GMC Sierra 1500 SLT

    $71,029

    MSRP $71,029

    Est. $1,211/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Summit White 2026 GMC Sierra 1500 SLT

    $71,029

    MSRP $71,029

    Est. $1,211/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Glacier White 2026 GMC Sierra 1500 SLT

    $66,555

    MSRP $66,555

    Est. $1,135/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $71,524

    MSRP $71,524

    Est. $1,219/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $65,955

    MSRP $65,955

    Est. $1,124/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $70,060

    Est. $1,194/mo

    Union Park Honda BMW Buick GMC Volvo Car

    2.4
    Check Availability
    Wilmington, DE (10 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $68,970

    Est. $1,176/mo

    Union Park Honda BMW Buick GMC Volvo Car

    2.4
    Check Availability
    Wilmington, DE (10 mi)
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  • $71,524

    MSRP $71,524

    Est. $1,219/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 mi)
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  • $68,735

    MSRP $68,735

    Est. $1,172/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (23 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. $893/mo

    Bob Johnson Used

    4.0
    Check Availability
    $399 delivery from Rochester, NY (256 mi)
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  • White 2026 GMC Sierra 1500 SLT

    $53,495

    Est. $912/mo

    Impex Chevrolet GMC

    4.7
    Check Availability
    $359 delivery from Reidsville, NC (315 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

    $51,400

    16,059 mi.
    Est. $876/mo

    Twin Pine Ford

    4.5
    Check Availability
    Ephrata, PA (44 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 SLT

    $59,000

    4,691 mi.
    Est. $1,006/mo

    Kent County Motors

    4.8
    Check Availability
    Dover, DE (40 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

    $66,575

    MSRP $66,575

    Est. $1,135/mo

    F.C. Kerbeck & Sons

    4.4
    Check Availability
    Palmyra, NJ (43 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 SLT

    $61,396

    MSRP $63,295

    Est. $1,047/mo

    Burns Buick GMC

    4.7
    Check Availability
    MARLTON, NJ (44 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

    $61,535

    Est. $1,049/mo

    Pellegrino Buick GMC

    4.7
    Check Availability
    Williamstown, NJ (38 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

    $63,390

    Est. $1,081/mo

    Pellegrino Buick GMC

    4.7
    Check Availability
    Williamstown, NJ (38 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 SLT

    $67,619

    MSRP $69,710

    Est. $1,153/mo

    Burns Buick GMC

    4.7
    Check Availability
    MARLTON, NJ (44 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 SLT

    $68,724

    MSRP $70,849

    Est. $1,172/mo

    Burns Buick GMC

    4.7
    Check Availability
    MARLTON, NJ (44 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 SLT

    $68,681

    MSRP $70,805

    Est. $1,171/mo

    Burns Buick GMC

    4.7
    Check Availability
    MARLTON, NJ (44 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

    $58,490

    $7.2K
    Est. $997/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (48 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

    $62,690

    MSRP $69,565

    Est. $1,069/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (46 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

    $60,590

    Est. $1,033/mo

    Pellegrino Buick GMC

    4.7
    Check Availability
    Williamstown, NJ (38 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