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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

    $58,223

    $1K

    MSRP $66,534

    Est. $1,075/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 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

    $56,998

    $225

    MSRP $61,640

    Est. $1,052/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (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

    $56,998

    $1K

    MSRP $70,305

    Est. $1,052/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 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

    $56,998

    $225

    MSRP $61,640

    Est. $1,052/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • 2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT

    $57,998

    $1K

    MSRP $70,305

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (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

    $57,998

    $2.1K

    MSRP $61,145

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • 2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT

    $58,998

    $7.1K

    MSRP $68,200

    Est. $1,089/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • 2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT

    $54,998

    $1K

    MSRP $68,200

    Est. $1,015/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • 2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT2026 GMC Sierra 1500 SLT

    $56,498

    $1K

    MSRP $68,200

    Est. $1,043/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (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

    $57,998

    $1.2K

    MSRP $66,534

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (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

    $52,998

    $1K

    MSRP $66,835

    Est. $978/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • GAZ 2026 GMC Sierra 1500 SLT

    $63,255

    $1K

    MSRP $64,290

    Est. $1,167/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
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  • GBA 2026 GMC Sierra 1500 SLT

    $57,810

    MSRP $60,845

    Est. $1,067/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Sterling Metallic 2026 GMC Sierra 1500 SLT

    $57,998

    $1K

    MSRP $70,305

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Summit White 2026 GMC Sierra 1500 SLT

    $58,998

    $1.2K

    MSRP $66,534

    Est. $1,089/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Summit White 2026 GMC Sierra 1500 SLT

    $52,998

    $5.3K

    MSRP $60,350

    Est. $978/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Summit White 2026 GMC Sierra 1500 SLT

    $52,749

    Est. $974/mo

    Freedom Chevrolet Buick GMC by Ed Morse

    3.7
    Check Availability
    Dallas, TX (10 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $55,998

    $1K

    MSRP $67,029

    Est. $1,033/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Glacier White Tricoat 2026 GMC Sierra 1500 SLT

    $57,998

    $1K

    MSRP $70,905

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Summit White 2026 GMC Sierra 1500 SLT

    $57,998

    $2.1K

    MSRP $61,145

    Est. $1,070/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • GAZ 2026 GMC Sierra 1500 SLT

    $64,290

    $1K

    MSRP $67,325

    Est. $1,187/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • Glacier White Tricoat 2026 GMC Sierra 1500 SLT

    $55,998

    $1K

    MSRP $68,200

    Est. $1,033/mo

    Sewell Buick GMC of Dallas

    3.7
    Check Availability
    Dallas, TX (23 mi)
    Quick view
  • 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

    $56,839

    Est. $1,049/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,144 delivery from Collinsville, IL (573 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

    $55,599

    Est. $1,026/mo

    Laura Buick GMC

    4.6
    Check Availability
    $1,144 delivery from Collinsville, IL (573 mi)
    Quick view

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