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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

    $51,216

    16,344 mi.
    Est. $928/mo

    AutoNation USA Katy

    4.5
    Check Availability
    Houston, TX (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

    $72,470

    MSRP $72,470

    Est. $1,313/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (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

    $46,995

    $1.7K
    25,429 mi.
    Est. $851/mo

    Planet Ford 59

    4.4
    Check Availability
    Humble, TX (27 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

    $56,325

    MSRP $67,575

    Est. $1,020/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $56,053

    4,800 mi.
    Est. $1,015/mo

    AutoNation Chrysler Dodge Jeep Ram Katy

    4.2
    Check Availability
    Katy, TX (27 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

    $64,475

    MSRP $64,475

    Est. $1,168/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $60,250

    $3.2K

    MSRP $71,500

    Est. $1,091/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $73,070

    MSRP $73,070

    Est. $1,324/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Black 2026 GMC Sierra 1500 SLT

    $58,434

    MSRP $68,684

    Est. $1,059/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (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

    $55,430

    MSRP $65,680

    Est. $1,004/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $64,960

    MSRP $68,985

    Est. $1,177/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $59,950

    MSRP $63,975

    Est. $1,086/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Red 2026 GMC Sierra 1500 SLTRed 2026 GMC Sierra 1500 SLTRed 2026 GMC Sierra 1500 SLTRed 2026 GMC Sierra 1500 SLTRed 2026 GMC Sierra 1500 SLTRed 2026 GMC Sierra 1500 SLT

    $82,039

    MSRP $68,039

    Est. $1,486/mo

    Classic Buick GMC

    4.7
    Check Availability
    Houston, TX (26 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

    $69,349

    $3K

    MSRP $72,374

    Est. $1,256/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (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

    $59,605

    $8K

    MSRP $70,855

    Est. $1,080/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $60,359

    MSRP $66,365

    Est. $1,093/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 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

    $68,985

    MSRP $68,985

    Est. $1,250/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Summit White 2026 GMC Sierra 1500 SLT

    $58,745

    MSRP $68,995

    Est. $1,064/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $59,455

    MSRP $63,480

    Est. $1,077/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Sterling Metallic 2026 GMC Sierra 1500 SLT

    $50,720

    MSRP $62,970

    Est. $919/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $64,735

    MSRP $66,760

    Est. $1,173/mo

    Group 1 Buick GMC North

    4.4
    Check Availability
    Houston, TX (17 mi)
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  • Onyx Black 2026 GMC Sierra 1500 SLT

    $60,100

    MSRP $71,350

    Est. $1,089/mo

    Demontrond Buick GMC

    4.8
    Check Availability
    Houston, TX (20 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

    $63,550

    $4K

    MSRP $67,575

    Est. $1,151/mo

    Group 1 Buick GMC South

    4.6
    Check Availability
    Free delivery from Houston, TX (47 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

    $64,785

    MSRP $68,810

    Est. $1,174/mo

    Group 1 Buick GMC South

    4.6
    Check Availability
    Free delivery from Houston, TX (47 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