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
  • Carbon Black Metallic 2020 GMC Sierra 1500 DenaliCarbon Black Metallic 2020 GMC Sierra 1500 DenaliCarbon Black Metallic 2020 GMC Sierra 1500 DenaliCarbon Black Metallic 2020 GMC Sierra 1500 DenaliCarbon Black Metallic 2020 GMC Sierra 1500 DenaliCarbon Black Metallic 2020 GMC Sierra 1500 Denali

    $28,998

    $913
    138,818 mi.
    Est. $540/mo

    Larry H. Miller Chrysler Dodge Jeep Ram 104th

    4.3
    Check Availability
    Thornton, CO (17 mi)
    Quick view
  • Cardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLT

    $37,205

    $500
    52,600 mi.
    Est. $693/mo

    Mike Maroone Cadillac GMC

    4.5
    Check Availability
    Boulder, CO (2 mi)
    Quick view
  • 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

    $29,799

    $490
    99,569 mi.
    Est. $555/mo

    AutoSearch USA

    5.0
    Check Availability
    Louisville, CO (9 mi)
    Quick view
  • Red 2020 GMC Sierra 1500 ElevationRed 2020 GMC Sierra 1500 ElevationRed 2020 GMC Sierra 1500 ElevationRed 2020 GMC Sierra 1500 ElevationRed 2020 GMC Sierra 1500 ElevationRed 2020 GMC Sierra 1500 Elevation

    $27,998

    115,162 mi.
    Est. $521/mo

    Levis Auto Sales

    Check Availability
    Denver, CO (23 mi)
    Quick view
  • Gray 2020 GMC Sierra 1500 AT4Gray 2020 GMC Sierra 1500 AT4Gray 2020 GMC Sierra 1500 AT4Gray 2020 GMC Sierra 1500 AT4Gray 2020 GMC Sierra 1500 AT4Gray 2020 GMC Sierra 1500 AT4

    $29,995

    90,217 mi.
    Est. $558/mo

    Central Park Auto

    Check Availability
    Aurora, CO (28 mi)
    Quick view
  • 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

    $38,714

    82,113 mi.
    Est. $721/mo

    Mike Maroone Cadillac GMC

    4.5
    Check Availability
    Boulder, CO (2 mi)
    Quick view
  • Burgundy 2020 GMC Sierra 1500 ElevationBurgundy 2020 GMC Sierra 1500 ElevationBurgundy 2020 GMC Sierra 1500 ElevationBurgundy 2020 GMC Sierra 1500 ElevationBurgundy 2020 GMC Sierra 1500 ElevationBurgundy 2020 GMC Sierra 1500 Elevation

    $32,998

    49,447 mi.
    Est. $614/mo

    CarMax West 104th Ave

    4.3
    Check Availability
    Federal Heights, CO (16 mi)
    Quick view
  • 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

    $32,100

    $800
    77,078 mi.
    Est. $598/mo

    Stevinson Toyota West

    4.3
    Check Availability
    Lakewood, CO (21 mi)
    Quick view
  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $42,291

    56,299 mi.
    Est. $787/mo

    Alpine Buick GMC

    4.4
    Check Availability
    Littleton, CO (28 mi)
    Quick view
  • Dark Sky Metallic 2020 GMC Sierra 1500 DenaliDark Sky Metallic 2020 GMC Sierra 1500 DenaliDark Sky Metallic 2020 GMC Sierra 1500 DenaliDark Sky Metallic 2020 GMC Sierra 1500 DenaliDark Sky Metallic 2020 GMC Sierra 1500 DenaliDark Sky Metallic 2020 GMC Sierra 1500 Denali

    $37,499

    88,680 mi.
    Est. $698/mo

    AutoNation Buick GMC West

    4.0
    Check Availability
    Golden, CO (21 mi)
    Quick view
  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $29,438

    $561
    140,933 mi.
    Est. $548/mo

    AutoNation Buick GMC West

    4.0
    Check Availability
    Golden, CO (21 mi)
    Quick view
  • Black 2020 GMC Sierra 1500 DenaliBlack 2020 GMC Sierra 1500 DenaliBlack 2020 GMC Sierra 1500 DenaliBlack 2020 GMC Sierra 1500 DenaliBlack 2020 GMC Sierra 1500 DenaliBlack 2020 GMC Sierra 1500 Denali

    $42,821

    60,079 mi.
    Est. $797/mo

    Sterling Auto Sales - Frederick

    Check Availability
    Longmont, CO (18 mi)
    Quick view
  • BLACK 2020 GMC Sierra 1500 ElevationBLACK 2020 GMC Sierra 1500 ElevationBLACK 2020 GMC Sierra 1500 ElevationBLACK 2020 GMC Sierra 1500 ElevationBLACK 2020 GMC Sierra 1500 ElevationBLACK 2020 GMC Sierra 1500 Elevation

    $32,998

    82,270 mi.
    Est. $614/mo

    Super Auto Company, Inc.

    5.0
    Check Availability
    Denver, CO (22 mi)
    Quick view
  • GRAY 2020 GMC Sierra 1500 SLTGRAY 2020 GMC Sierra 1500 SLTGRAY 2020 GMC Sierra 1500 SLTGRAY 2020 GMC Sierra 1500 SLTGRAY 2020 GMC Sierra 1500 SLTGRAY 2020 GMC Sierra 1500 SLT

    $32,999

    130,838 mi.
    Est. $614/mo

    Super Auto Company, Inc.

    5.0
    Check Availability
    Denver, CO (22 mi)
    Quick view
  • Gray 2020 GMC Sierra 1500 ElevationGray 2020 GMC Sierra 1500 ElevationGray 2020 GMC Sierra 1500 ElevationGray 2020 GMC Sierra 1500 ElevationGray 2020 GMC Sierra 1500 ElevationGray 2020 GMC Sierra 1500 Elevation

    $27,049

    $1.2K
    108,649 mi.
    Est. $504/mo

    Sterling Auto Sales - Frederick

    Check Availability
    Longmont, CO (18 mi)
    Quick view
  • Dark Sky Metallic 2020 GMC Sierra 1500 SLE

    $30,998

    76,060 mi.
    Est. $577/mo

    Transwest GMC Denver

    4.8
    Check Availability
    Henderson, CO (22 mi)
    Quick view
  • $33,865

    57,500 mi.
    Est. $630/mo

    Alpine Buick GMC

    4.4
    Check Availability
    Littleton, CO (28 mi)
    Quick view
  • 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

    $30,982

    $1K
    134,723 mi.
    Est. $577/mo

    Mark Kia

    4.1
    Check Availability
    $1,161 delivery from Scottsdale, AZ (581 mi)
    Quick view
  • Black 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLT

    $42,998

    18,150 mi.
    Est. $800/mo

    CarMax Kansas City

    4.0
    Check Availability
    Free delivery to Federal Heights, CO (16 mi)
    Quick view
  • Pacific Blue Metallic 2020 GMC Sierra 1500Pacific Blue Metallic 2020 GMC Sierra 1500Pacific Blue Metallic 2020 GMC Sierra 1500Pacific Blue Metallic 2020 GMC Sierra 1500Pacific Blue Metallic 2020 GMC Sierra 1500Pacific Blue Metallic 2020 GMC Sierra 1500

    $23,988

    118,473 mi.
    Est. $447/mo

    Alpine Chevrolet

    4.6
    Check Availability
    Aurora, CO (31 mi)
    Quick view
  • Silver 2020 GMC Sierra 1500 DenaliSilver 2020 GMC Sierra 1500 DenaliSilver 2020 GMC Sierra 1500 DenaliSilver 2020 GMC Sierra 1500 DenaliSilver 2020 GMC Sierra 1500 DenaliSilver 2020 GMC Sierra 1500 Denali

    $38,998

    74,685 mi.
    Est. $726/mo

    Colorado Auto Finders

    4.1
    Check Availability
    Centennial, CO (37 mi)
    Quick view
  • White Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 Denali

    $36,000

    83,460 mi.
    Est. $670/mo

    Mike Ward INFINITI

    4.6
    Check Availability
    Highlands Ranch, CO (34 mi)
    Quick view
  • Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4

    $39,995

    87,286 mi.
    Est. $745/mo

    Berkenkotter Motors Castle Rock

    4.5
    Check Availability
    Castle Rock, CO (50 mi)
    Quick view
  • 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 Denali

    $30,984

    146,384 mi.
    Est. $577/mo

    Drive N-Motion Greeley

    4.2
    Check Availability
    Greeley, CO (40 mi)
    Quick view
  • Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4Pacific Blue Metallic 2020 GMC Sierra 1500 AT4

    $38,149

    $1.5K
    102,104 mi.
    Est. $710/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (33 mi)
    Quick view
  • White Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 DenaliWhite Frost Tricoat 2020 GMC Sierra 1500 Denali

    $44,749

    $535
    66,673 mi.
    Est. $833/mo

    Loveland Buick GMC

    Check Availability
    Loveland, CO (33 mi)
    Quick view
  • Gray 2020 GMC Sierra 1500 Denali

    $42,999

    43,435 mi.
    Est. $801/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (38 mi)
    Quick view

GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $62,941 3 Good deals
2025 GMC Sierra 1500 $54,047 7 Great deals
2024 GMC Sierra 1500 $52,108 6 Great deals
2023 GMC Sierra 1500 $48,981 24 Good deals
2022 GMC Sierra 1500 $41,922 14 Good deals
2021 GMC Sierra 1500 $36,186 5 Great deals
2019 GMC Sierra 1500 $32,479 13 Good deals
2018 GMC Sierra 1500 $27,317 8 Good deals

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 $33,992, with pricing starting at $14,995.

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.

What are some similar vehicles and competitors of the 2020 GMC Sierra 1500?

The 2020 GMC Sierra 1500 compares to and/or competes against the following vehicles:


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)
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

Research the 2020 GMC Sierra 1500

Compare the 2020 GMC Sierra 1500

2020 GMC Sierra 1500 by city