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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

    $67,649

    MSRP $68,984

    Est. $1,217/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $60,262

    MSRP $66,840

    Est. $1,084/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $54,359

    MSRP $66,460

    Est. $978/mo

    Key GMC of Rochester

    4.7
    Rochester, NH (21 mi)
    Check Availability
  • 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

    $57,944

    $3.8K

    MSRP $70,045

    Est. $1,042/mo

    Key GMC of Rochester

    4.7
    Rochester, NH (21 mi)
    Check Availability
  • 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

    $67,049

    MSRP $68,384

    Est. $1,206/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $57,944

    $3.8K

    MSRP $70,045

    Est. $1,042/mo

    Key GMC of Rochester

    4.7
    Rochester, NH (21 mi)
    Check Availability
  • 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

    $62,422

    MSRP $66,885

    Est. $1,123/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $65,304

    MSRP $68,189

    Est. $1,175/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $62,454

    MSRP $65,339

    Est. $1,123/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $61,452

    MSRP $66,344

    Est. $1,105/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $57,944

    $3.8K

    MSRP $70,045

    Est. $1,042/mo

    Key GMC of Rochester

    4.7
    Rochester, NH (21 mi)
    Check Availability
  • 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

    $66,554

    MSRP $67,889

    Est. $1,197/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $59,922

    $669

    MSRP $66,839

    Est. $1,078/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $64,209

    MSRP $67,094

    Est. $1,155/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $63,384

    MSRP $66,269

    Est. $1,140/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $67,049

    MSRP $68,384

    Est. $1,206/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $65,304

    MSRP $68,189

    Est. $1,175/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $63,384

    MSRP $66,269

    Est. $1,140/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 SLT

    $66,164

    MSRP $69,049

    Est. $1,190/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 1500 SLT

    $65,669

    MSRP $68,554

    Est. $1,181/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 SLT

    $62,949

    MSRP $65,834

    Est. $1,132/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Summit White 2026 GMC Sierra 1500 SLT

    $65,669

    MSRP $68,554

    Est. $1,181/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 SLT

    $66,499

    MSRP $68,384

    Est. $1,196/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • Onyx Black 2026 GMC Sierra 1500 SLT

    $64,704

    MSRP $67,589

    Est. $1,164/mo

    Weirs Motor Sales, Inc.

    4.7
    Arundel, ME (22 mi)
    Check Availability
  • 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

    $58,404

    Est. $1,050/mo

    Leesburg Buick GMC

    4.4
    $690 delivery from Leesburg, VA (460 mi)
    Check Availability
  • 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

    $60,750

    MSRP $64,255

    Est. $1,093/mo

    Coleman Buick GMC

    4.5
    $599 delivery from Lawrenceville, NJ (296 mi)
    Check Availability

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 $55,400.

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 4.6 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2026 Sierra 1500 owners.

Ratings (7 reviews)

85% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.4
Interior
4.4
Performance
4.6
Value
3.9
Exterior
4.6
Reliability
4.6
Trims

SLT (3 styles)

Style
2WD Crew Cab 147" SLT 4WD Crew Cab 147" SLT 4WD Crew Cab 157" SLT
Inventory price
Starting at $55,400 Starting at $58,500 Starting at $59,200
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)

2026 GMC Sierra 1500 SLT by city