Skip to main content
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed
Skip to Filters
  • 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

    $53,804

    MSRP $62,580

    Est. $957/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    Quick view
  • 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

    $59,384

    MSRP $70,160

    Est. $1,057/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    Quick view
  • 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

    $68,885

    MSRP $68,885

    Est. $1,226/mo

    Fabre Chevrolet GMC

    4.7
    Saint Francisville, LA (24 mi)
    Check Availability
    Quick view
  • 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

    $61,549

    MSRP $71,325

    Est. $1,095/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $61,549

    MSRP $71,325

    Est. $1,095/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $56,229

    MSRP $67,005

    Est. $1,001/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $57,639

    MSRP $68,415

    Est. $1,026/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $58,634

    MSRP $69,410

    Est. $1,043/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    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

    $62,074

    MSRP $70,850

    Est. $1,105/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,729

    MSRP $70,505

    Est. $1,063/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $64,968

    MSRP $74,744

    Est. $1,156/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $60,509

    MSRP $70,285

    Est. $1,077/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,859

    MSRP $68,635

    Est. $1,065/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $54,809

    MSRP $65,585

    Est. $975/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    Quick view
  • 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

    $56,509

    MSRP $65,285

    Est. $1,006/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,859

    MSRP $68,635

    Est. $1,065/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,859

    MSRP $68,635

    Est. $1,065/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $63,718

    MSRP $73,494

    Est. $1,134/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,129

    MSRP $69,905

    Est. $1,052/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $57,679

    MSRP $66,455

    Est. $1,026/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    Quick view
  • 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

    $57,139

    MSRP $67,915

    Est. $1,017/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $56,229

    MSRP $67,005

    Est. $1,001/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $53,804

    MSRP $62,580

    Est. $957/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $60,929

    MSRP $69,705

    Est. $1,084/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $55,499

    MSRP $66,475

    Est. $988/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,979

    MSRP $70,755

    Est. $1,067/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability

    Quick view
  • 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

    $59,129

    MSRP $69,905

    Est. $1,052/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $59,384

    MSRP $70,160

    Est. $1,057/mo

    Ross Downing GMC of Gonzales

    4.1
    Gonzales, LA (26 mi)
    Check Availability
    Quick view
  • 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

    $57,170

    MSRP $68,040

    Est. $1,017/mo

    VanGuard GMC

    4.9
    $658 delivery from Sherman, TX (387 mi)
    Check Availability
    Quick view
  • 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

    $57,170

    MSRP $68,040

    Est. $1,017/mo

    VanGuard GMC

    4.9
    $658 delivery from Sherman, TX (387 mi)
    Check Availability
    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 (6 reviews)

83% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.3
Interior
4.3
Performance
4.5
Value
3.7
Exterior
4.5
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)
Skip to Listings
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed

2026 GMC Sierra 1500 SLT by city

GMC Sierra 1500 trims