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New GMC Sierra 1500 SLT for Sale near Firth, ID

43 results
Basalt, ID
2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $74,610

$67,360

Idaho Falls, ID
15 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Glacier White Tricoat
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate
Transmission:
Automatic
Mileage:
3
Stock number:
1G266314
VIN:
3GTUUDEL0TG226314

Sponsored

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $68,730

$65,480

St Anthony, ID
49 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Transmission:
Automatic
Mileage:
4
Stock number:
G266177N
VIN:
3GTUUDED5TG246177

Sponsored

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $62,090

$52,109

Pocatello, ID
33 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate, Perforated leather-appointed fr
Transmission:
Automatic
Mileage:
4,446
Stock number:
26224
VIN:
1GTUUDED1TZ125002

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $67,975

$57,958

Pocatello, ID
33 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Sterling Metallic
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate, Perforated leather-appointed fr
Transmission:
Automatic
Mileage:
3,659
Stock number:
26211
VIN:
1GTUUDED9TZ107945

Preparing for a close up...

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2026 GMC Sierra 1500

New car | MSRP $67,130

$60,554

Pocatello, ID
33 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate, Perforated leather-appointed fr
Transmission:
Automatic
Mileage:
3
Stock number:
26414
VIN:
3GTUUDED6TG248259

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2026 GMC Sierra 1500

New car | MSRP $68,465

$59,890

Pocatello, ID
33 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate, Perforated leather-appointed fr
Transmission:
Automatic
Mileage:
5
Stock number:
26212
VIN:
1GTUUDED7TZ108057

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2026 GMC Sierra 1500

New car | MSRP $63,785

$59,785

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
STERLING METALLIC
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
JET BLACK
Transmission:
Automatic
Mileage:
9
Stock number:
260920
VIN:
3GTUUDE87TG238634

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2026 GMC Sierra 1500

New car | MSRP $70,514

$66,514

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
STERLING METALLIC
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
JET BLACK
Transmission:
Automatic
Mileage:
11
Stock number:
260876
VIN:
1GTUUDE84TZ255083

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2026 GMC Sierra 1500

New car | MSRP $71,409

$67,409

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
GLACIER WHITE TRICOAT
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
DARK WALNUT/SLATE
Transmission:
Automatic
Mileage:
11
Stock number:
260877
VIN:
1GTUUDE8XTZ257517

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Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $67,380

$60,784

Pocatello, ID
33 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate, Perforated leather-appointed fr
Transmission:
Automatic
Mileage:
5
Stock number:
26392
VIN:
3GTUUDED9TG222481

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,615

$65,615

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
GLACIER WHITE TRICOAT
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
DARK WALNUT/SLATE
Transmission:
Automatic
Mileage:
13
Stock number:
260924
VIN:
3GTUUDE89TG232527

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2026 GMC Sierra 1500

New car | MSRP $70,914

$67,914

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
ONYX BLACK
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
JET BLACK
Transmission:
Automatic
Mileage:
25
Stock number:
260940
VIN:
3GTUUDE82TG252361

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $70,914

$67,914

Rexburg, ID
39 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
ONYX BLACK
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
JET BLACK
Transmission:
Automatic
Mileage:
25
Stock number:
260943
VIN:
1GTUUDE89TZ282442

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $74,610

$67,360

Idaho Falls, ID
15 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Glacier White Tricoat
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Dark Walnut/Slate
Transmission:
Automatic
Mileage:
3
Stock number:
1G266314
VIN:
3GTUUDEL0TG226314

  1. Home
  2. / New Cars
  3. / GMC Sierra 1500
  4. / SLT
  5. / Idaho
  6. / Firth
FAQs

GMC Sierra 1500 SLT FAQs

What is the fuel economy of the GMC Sierra 1500 SLT?

Depending on the engine and options, the GMC Sierra 1500 SLT gets between 14 and 24 MPG (or EV battery range).

What fuel types are available?

Diesel, Flex Fuel Vehicle, Gasoline engines are available.

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