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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. $1,082/mo

    Pointe GMC

    4.0
    Check Availability
    Penns Grove, NJ (22 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

    $56,195

    MSRP $67,945

    Est. $1,016/mo

    Pointe GMC

    4.0
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    Penns Grove, NJ (22 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. $1,222/mo

    Burns Buick GMC

    4.8
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    MARLTON, NJ (28 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

    $66,555

    MSRP $66,555

    Est. $1,203/mo

    Granite Run Buick GMC

    4.1
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    Media, PA (9 mi)
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  • Gray 2026 GMC Sierra 1500 SLTGray 2026 GMC Sierra 1500 SLTGray 2026 GMC Sierra 1500 SLTGray 2026 GMC Sierra 1500 SLTGray 2026 GMC Sierra 1500 SLTGray 2026 GMC Sierra 1500 SLT

    $62,191

    MSRP $68,570

    Est. $1,124/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (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 SLT

    $61,396

    MSRP $63,295

    Est. $1,110/mo

    Burns Buick GMC

    4.8
    Check Availability
    MARLTON, NJ (28 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

    $62,770

    Est. $1,134/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (19 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. $1,242/mo

    Burns Buick GMC

    4.8
    Check Availability
    MARLTON, NJ (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

    $67,225

    MSRP $69,735

    Est. $1,215/mo

    Hill Buick GMC

    5.0
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    Newtown Square, PA (4 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

    $57,040

    1,917 mi.
    Est. $1,031/mo

    Fred Beans Ford of Doylestown

    4.8
    Check Availability
    Doylestown, PA (26 mi)
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  • Black 2026 GMC Sierra 1500 SLTBlack 2026 GMC Sierra 1500 SLTBlack 2026 GMC Sierra 1500 SLTBlack 2026 GMC Sierra 1500 SLTBlack 2026 GMC Sierra 1500 SLTBlack 2026 GMC Sierra 1500 SLT

    $62,191

    MSRP $68,570

    Est. $1,124/mo

    Patriot Buick GMC

    4.7
    Check Availability
    Boyertown, PA (23 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

    $62,060

    Est. $1,122/mo

    Star GMC of Quakertown

    4.2
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    Quakertown, PA (29 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

    $66,225

    MSRP $68,735

    Est. $1,197/mo

    Hill Buick GMC

    5.0
    Check Availability
    Newtown Square, PA (4 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 SLT

    $69,743

    MSRP $71,900

    Est. $1,260/mo

    Burns Buick GMC

    4.8
    Check Availability
    MARLTON, NJ (28 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

    $65,955

    MSRP $65,955

    Est. $1,192/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (9 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

    $71,029

    MSRP $71,029

    Est. $1,284/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (9 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

    $71,524

    MSRP $71,524

    Est. $1,293/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (9 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

    $68,735

    MSRP $68,735

    Est. $1,242/mo

    Granite Run Buick GMC

    4.1
    Check Availability
    Media, PA (9 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

    $58,980

    Est. $1,066/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (19 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

    $59,475

    Est. $1,075/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (19 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

    $54,295

    Est. $981/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (19 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

    $65,710

    Est. $1,188/mo

    Bergey's Buick GMC

    4.6
    Check Availability
    Souderton, PA (19 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

    $68,115

    Est. $1,231/mo

    Coleman Buick GMC

    4.4
    Check Availability
    $599 delivery from Lawrenceville, NJ (43 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

    $56,998

    1,924 mi.
    Est. $1,030/mo

    CarMax Austin North

    4.6
    Check Availability
    $1,299 delivery to King of Prussia, PA (4 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