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  • Silver 2020 GMC Sierra 1500 FLEET/BASESilver 2020 GMC Sierra 1500 FLEET/BASESilver 2020 GMC Sierra 1500 FLEET/BASESilver 2020 GMC Sierra 1500 FLEET/BASESilver 2020 GMC Sierra 1500 FLEET/BASESilver 2020 GMC Sierra 1500 FLEET/BASE

    $31,393

    54,191 mi.
    Est. $506/mo

    Snyder Motors Inc

    5.0
    Check Availability
    Bozeman, MT (15 mi)
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  • Pacific Blue 2020 GMC Sierra 1500 ElevationPacific Blue 2020 GMC Sierra 1500 ElevationPacific Blue 2020 GMC Sierra 1500 ElevationPacific Blue 2020 GMC Sierra 1500 ElevationPacific Blue 2020 GMC Sierra 1500 ElevationPacific Blue 2020 GMC Sierra 1500 Elevation

    $36,389

    62,528 mi.
    Est. $586/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (14 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $36,892

    60,335 mi.
    Est. $594/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (14 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4

    $32,389

    147,128 mi.
    Est. $522/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (14 mi)
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  • Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4

    $35,360

    92,660 mi.
    Est. $569/mo

    Snyder Motors Inc

    5.0
    Check Availability
    Bozeman, MT (15 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $41,999

    68,014 mi.
    Est. $676/mo

    Billion Dodge Chrysler Jeep RAM

    Check Availability
    Bozeman, MT (14 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 ElevationDark Sky Metallic 2020 GMC Sierra 1500 Elevation

    $36,499

    55,864 mi.
    Est. $588/mo

    Billion Dodge Chrysler Jeep RAM

    Check Availability
    Bozeman, MT (14 mi)
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  • $40,389

    55,803 mi.
    Est. $650/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (14 mi)
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  • $36,999

    60,230 mi.
    Est. $596/mo

    Billion Dodge Chrysler Jeep RAM

    Check Availability
    Bozeman, MT (14 mi)
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  • $41,397

    50,988 mi.
    Est. $667/mo

    Kendall Ford of Bozeman

    3.5
    Check Availability
    Bozeman, MT (16 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $35,991

    76,423 mi.
    Est. $580/mo

    Mark Kia

    4.1
    Check Availability
    $1,698 delivery from Scottsdale, AZ (850 mi)
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  • Summit White 2020 GMC Sierra 1500 ElevationSummit White 2020 GMC Sierra 1500 ElevationSummit White 2020 GMC Sierra 1500 ElevationSummit White 2020 GMC Sierra 1500 ElevationSummit White 2020 GMC Sierra 1500 ElevationSummit White 2020 GMC Sierra 1500 Elevation

    $26,999

    $500
    134,615 mi.
    Est. $435/mo

    Mountain West Motor - Twin Falls

    Check Availability
    $376 delivery from Twin Falls, ID (269 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 Denali

    $32,853

    $3.2K
    88,134 mi.
    Est. $529/mo

    Lithia Toyota of Billings

    4.3
    Check Availability
    Billings, MT (136 mi)
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  • Pacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLT

    $40,496

    75,411 mi.
    Est. $652/mo

    Lithia Chevrolet GMC of Helena

    4.3
    Check Availability
    Helena, MT (66 mi)
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  • White 2020 GMC Sierra 1500 DenaliWhite 2020 GMC Sierra 1500 DenaliWhite 2020 GMC Sierra 1500 DenaliWhite 2020 GMC Sierra 1500 DenaliWhite 2020 GMC Sierra 1500 DenaliWhite 2020 GMC Sierra 1500 Denali

    $35,977

    $1.1K
    77,804 mi.
    Est. $579/mo

    Lithia Ford of Missoula

    4.5
    Check Availability
    Missoula, MT (148 mi)
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  • Carbon Black Metallic 2020 GMC Sierra 1500 AT4Carbon Black Metallic 2020 GMC Sierra 1500 AT4Carbon Black Metallic 2020 GMC Sierra 1500 AT4Carbon Black Metallic 2020 GMC Sierra 1500 AT4Carbon Black Metallic 2020 GMC Sierra 1500 AT4Carbon Black Metallic 2020 GMC Sierra 1500 AT4

    $34,850

    92,255 mi.
    Est. $561/mo

    Wolfe Ford of Fort Benton

    4.6
    Check Availability
    Fort Benton, MT (146 mi)
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  • Pacific Blue Metallic 2020 GMC Sierra 1500 BasePacific Blue Metallic 2020 GMC Sierra 1500 BasePacific Blue Metallic 2020 GMC Sierra 1500 BasePacific Blue Metallic 2020 GMC Sierra 1500 BasePacific Blue Metallic 2020 GMC Sierra 1500 BasePacific Blue Metallic 2020 GMC Sierra 1500 Base

    $26,777

    82,309 mi.
    Est. $431/mo

    Rimrock Snowy Mountains CDJR

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    Lewistown, MT (128 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 DenaliSatin Steel Metallic 2020 GMC Sierra 1500 Denali

    $30,577

    $2.4K
    122,871 mi.
    Est. $492/mo

    Rimrock Snowy Mountains CDJR

    Check Availability
    Lewistown, MT (128 mi)
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  • White 2020 GMC Sierra 1500 SLTWhite 2020 GMC Sierra 1500 SLTWhite 2020 GMC Sierra 1500 SLTWhite 2020 GMC Sierra 1500 SLTWhite 2020 GMC Sierra 1500 SLTWhite 2020 GMC Sierra 1500 SLT

    $34,995

    96,185 mi.
    Est. $564/mo

    Bleskin Motors

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    Great Falls, MT (120 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $32,995

    146,536 mi.
    Est. $531/mo

    Kobold Auto Sales

    Check Availability
    Billings, MT (139 mi)
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  • $42,995

    106,860 mi.
    Est. $692/mo

    Bleskin Motors

    Check Availability
    Great Falls, MT (120 mi)
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About the 2020 GMC Sierra 1500

Basics

Base shown (base trim).

Seating
3
Door count
2
Drivetrain
Rear-wheel drive
Combined MPG
17
Transmission
6-Speed A/T
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
Side view of the 2020 GMC Sierra 1500
FAQs

How much does the 2020 GMC Sierra 1500 cost?

The 2020 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 1500 is $34,221, with pricing starting at $14,900.

What is the MPG of the 2020 GMC Sierra 1500?

The 2020 GMC Sierra 1500 offers up to 15 MPG in city driving and 21 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 trim, driving conditions, driving habits, vehicle maintenance, and other factors.

Is the 2020 GMC Sierra 1500 reliable?

The 2020 GMC Sierra 1500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 1500 owners.

Is the 2020 GMC Sierra 1500 a good truck?

Below are the Cars.com consumer ratings for the 2020 GMC Sierra 1500.

(69 reviews)
Rating breakdown (out of 5):
Comfort
4.9
Interior
4.8
Performance
4.8
Value
4.6
Exterior
4.9
Reliability
4.7
Ratings (69 reviews)

91% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.8
Performance
4.8
Value
4.6
Exterior
4.9
Reliability
4.7
Trims

AT4 (3 styles)

Style
4WD Double Cab 147" AT4 4WD Crew Cab 157" AT4 4WD Crew Cab 147" AT4
Inventory price
Starting at $51,300 Starting at $54,000 Starting at $53,700
Combined MPG
18 18 18
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)

Base (8 styles)

Style
4WD Crew Cab 157" 2WD Double Cab 147" 2WD Crew Cab 147" 4WD Double Cab 147" 2WD Crew Cab 157" 4WD Crew Cab 147" 4WD Reg Cab 140" 2WD Reg Cab 140"
Inventory price
Starting at $39,500 Starting at $33,500 Starting at $35,900 Starting at $36,800 Starting at $36,200 Starting at $39,200 Starting at $34,200 Starting at $29,600
Combined MPG
20 20 20 20 20 20 17 17
Engine
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

Denali (4 styles)

Style
2WD Crew Cab 157" Denali 4WD Crew Cab 147" Denali 4WD Crew Cab 157" Denali 2WD Crew Cab 147" Denali
Inventory price
Starting at $55,400 Starting at $58,600 Starting at $58,900 Starting at $55,100
Combined MPG
19 18 18 19
Engine
355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)

Elevation (6 styles)

Style
4WD Crew Cab 157" Elevation 2WD Double Cab 147" Elevation 2WD Crew Cab 157" Elevation 2WD Crew Cab 147" Elevation 4WD Double Cab 147" Elevation 4WD Crew Cab 147" Elevation
Inventory price
Starting at $46,500 Starting at $40,500 Starting at $43,200 Starting at $42,900 Starting at $43,800 Starting at $46,200
Combined MPG
20 21 21 21 20 20
Engine
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)

SLE (6 styles)

Style
2WD Crew Cab 157" SLE 2WD Double Cab 147" SLE 4WD Double Cab 147" SLE 2WD Crew Cab 147" SLE 4WD Crew Cab 157" SLE 4WD Crew Cab 147" SLE
Inventory price
Starting at $40,700 Starting at $38,000 Starting at $41,300 Starting at $40,400 Starting at $44,000 Starting at $43,700
Combined MPG
21 21 20 20 20 20
Engine
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)

SLT (6 styles)

Style
4WD Crew Cab 147" SLT 2WD Crew Cab 147" SLT 4WD Crew Cab 157" SLT 4WD Double Cab 147" SLT 2WD Double Cab 147" SLT 2WD Crew Cab 157" SLT
Inventory price
Starting at $50,400 Starting at $46,900 Starting at $50,700 Starting at $48,000 Starting at $44,500 Starting at $47,200
Combined MPG
18 19 18 18 19 19
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)
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