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 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4

    $31,999

    106,686 mi.
    Est. $589/mo

    ETHIO Motors

    4.6
    Check Availability
    Denver, CO (19 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 Denali

    $42,887

    75,871 mi.
    Est. $790/mo

    Grand Valley Auto Sales - Lakewood

    4.2
    Check Availability
    Lakewood, CO (23 mi)
    Quick view
  • White 2021 GMC Sierra 1500 SLTWhite 2021 GMC Sierra 1500 SLTWhite 2021 GMC Sierra 1500 SLTWhite 2021 GMC Sierra 1500 SLTWhite 2021 GMC Sierra 1500 SLTWhite 2021 GMC Sierra 1500 SLT

    $32,988

    103,379 mi.
    Est. $607/mo

    Family Trucks and Vans

    4.7
    Check Availability
    Denver, CO (16 mi)
    Quick view
  • Cayenne Red Tintcoat 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat 2021 GMC Sierra 1500 Elevation

    $26,999

    102,515 mi.
    Est. $497/mo

    Mountain States Toyota

    4.6
    Check Availability
    Denver, CO (19 mi)
    Quick view
  • Quicksilver Metallic 2021 GMC Sierra 1500 ElevationQuicksilver Metallic 2021 GMC Sierra 1500 ElevationQuicksilver Metallic 2021 GMC Sierra 1500 ElevationQuicksilver Metallic 2021 GMC Sierra 1500 ElevationQuicksilver Metallic 2021 GMC Sierra 1500 ElevationQuicksilver Metallic 2021 GMC Sierra 1500 Elevation

    $30,894

    $470
    91,173 mi.
    Est. $569/mo

    AutoNation Dodge Ram Arapahoe

    4.5
    Check Availability
    Centennial, CO (12 mi)
    Quick view
  • Dark Sky Metallic 2021 GMC Sierra 1500 AT4Dark Sky Metallic 2021 GMC Sierra 1500 AT4Dark Sky Metallic 2021 GMC Sierra 1500 AT4Dark Sky Metallic 2021 GMC Sierra 1500 AT4Dark Sky Metallic 2021 GMC Sierra 1500 AT4Dark Sky Metallic 2021 GMC Sierra 1500 AT4

    $35,400

    99,460 mi.
    Est. $652/mo

    Grand Valley Auto Sales - Lakewood

    4.2
    Check Availability
    Lakewood, CO (23 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4Onyx Black 2021 GMC Sierra 1500 AT4

    $36,998

    80,644 mi.
    Est. $681/mo

    Colorado Auto Finders

    4.1
    Check Availability
    Centennial, CO (11 mi)
    Quick view
  • Onyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 DenaliOnyx Black 2021 GMC Sierra 1500 Denali

    $39,988

    101,105 mi.
    Est. $736/mo

    Family Trucks and Vans

    4.7
    Check Availability
    Denver, CO (16 mi)
    Quick view
  • Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4

    $38,990

    $1K
    71,656 mi.
    Est. $718/mo

    O'Meara Ford

    4.3
    Check Availability
    Northglenn, CO (21 mi)
    Quick view
  • Cayenne Red 2021 GMC Sierra 1500 AT4Cayenne Red 2021 GMC Sierra 1500 AT4Cayenne Red 2021 GMC Sierra 1500 AT4Cayenne Red 2021 GMC Sierra 1500 AT4Cayenne Red 2021 GMC Sierra 1500 AT4Cayenne Red 2021 GMC Sierra 1500 AT4

    $35,697

    $1.2K
    99,210 mi.
    Est. $657/mo

    Auto Mart USA

    Check Availability
    Aurora, CO (10 mi)
    Quick view
  • Pacific Blue Metallic 2021 GMC Sierra 1500 ElevationPacific Blue Metallic 2021 GMC Sierra 1500 ElevationPacific Blue Metallic 2021 GMC Sierra 1500 ElevationPacific Blue Metallic 2021 GMC Sierra 1500 ElevationPacific Blue Metallic 2021 GMC Sierra 1500 ElevationPacific Blue Metallic 2021 GMC Sierra 1500 Elevation

    $29,988

    $1K
    117,848 mi.
    Est. $552/mo

    Family Trucks and Vans

    4.7
    Check Availability
    Denver, CO (16 mi)
    Quick view
  • White Frost Tri-Coat 2021 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2021 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2021 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2021 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2021 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2021 GMC Sierra 1500 SLT

    $39,309

    44,559 mi.
    Est. $724/mo

    Auto Mart USA

    Check Availability
    Aurora, CO (10 mi)
    Quick view
  • Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4Black 2021 GMC Sierra 1500 AT4

    $41,968

    57,262 mi.
    Est. $773/mo

    Christopher's Dodge Ram

    3.2
    Check Availability
    Golden, CO (27 mi)
    Quick view
  • Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4Summit White 2021 GMC Sierra 1500 AT4

    $36,488

    93,322 mi.
    Est. $672/mo

    Johnson Auto Plaza

    3.4
    Check Availability
    Brighton, CO (19 mi)
    Quick view
  • Summit White 2021 GMC Sierra 1500 ElevationSummit White 2021 GMC Sierra 1500 ElevationSummit White 2021 GMC Sierra 1500 ElevationSummit White 2021 GMC Sierra 1500 ElevationSummit White 2021 GMC Sierra 1500 ElevationSummit White 2021 GMC Sierra 1500 Elevation

    $35,188

    30,359 mi.
    Est. $648/mo

    O'Meara GMC

    3.1
    Check Availability
    Thornton, CO (22 mi)
    Quick view
  • Brownstone Metallic 2021 GMC Sierra 1500 ElevationBrownstone Metallic 2021 GMC Sierra 1500 ElevationBrownstone Metallic 2021 GMC Sierra 1500 ElevationBrownstone Metallic 2021 GMC Sierra 1500 ElevationBrownstone Metallic 2021 GMC Sierra 1500 ElevationBrownstone Metallic 2021 GMC Sierra 1500 Elevation

    $33,688

    74,100 mi.
    Est. $620/mo

    O'Meara GMC

    3.1
    Check Availability
    Thornton, CO (22 mi)
    Quick view
  • WHITE 2021 GMC Sierra 1500 ElevationWHITE 2021 GMC Sierra 1500 ElevationWHITE 2021 GMC Sierra 1500 ElevationWHITE 2021 GMC Sierra 1500 ElevationWHITE 2021 GMC Sierra 1500 ElevationWHITE 2021 GMC Sierra 1500 Elevation

    $33,998

    73,511 mi.
    Est. $626/mo

    Super Auto Company, Inc.

    5.0
    Check Availability
    Denver, CO (20 mi)
    Quick view
  • Sky 2021 GMC Sierra 1500 AT4Sky 2021 GMC Sierra 1500 AT4Sky 2021 GMC Sierra 1500 AT4Sky 2021 GMC Sierra 1500 AT4Sky 2021 GMC Sierra 1500 AT4Sky 2021 GMC Sierra 1500 AT4

    $38,987

    76,656 mi.
    Est. $718/mo

    O'Meara GMC

    3.1
    Check Availability
    Thornton, CO (22 mi)
    Quick view
  • RED 2021 GMC Sierra 1500 ElevationRED 2021 GMC Sierra 1500 ElevationRED 2021 GMC Sierra 1500 ElevationRED 2021 GMC Sierra 1500 ElevationRED 2021 GMC Sierra 1500 ElevationRED 2021 GMC Sierra 1500 Elevation

    $37,298

    66,328 mi.
    Est. $687/mo

    Super Auto Company, Inc.

    5.0
    Check Availability
    Denver, CO (20 mi)
    Quick view
  • Dark Sky Metallic 2021 GMC Sierra 1500 Denali

    $46,500

    31,234 mi.
    Est. $856/mo

    Shortline Buick GMC

    Check Availability
    Aurora, CO (10 mi)
    Quick view
  • Ebony Twilight Metallic 2021 GMC Sierra 1500 Denali

    $34,396

    132,669 mi.
    Est. $633/mo

    Springs Automotive Group

    4.6
    Check Availability
    Englewood, CO (18 mi)
    Quick view
  • Summit White 2021 GMC Sierra 1500 SLT

    $36,704

    $505
    71,424 mi.
    Est. $676/mo

    AutoNation Ford Littleton

    4.3
    Check Availability
    Littleton, CO (18 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 SLTSatin Steel Metallic 2021 GMC Sierra 1500 SLTSatin Steel Metallic 2021 GMC Sierra 1500 SLTSatin Steel Metallic 2021 GMC Sierra 1500 SLTSatin Steel Metallic 2021 GMC Sierra 1500 SLTSatin Steel Metallic 2021 GMC Sierra 1500 SLT

    $46,990

    48,567 mi.
    Est. $865/mo

    Earth MotorCars / Lotus of Dallas

    4.7
    Check Availability
    $956 delivery from Carrollton, TX (638 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 SLESatin Steel Metallic 2021 GMC Sierra 1500 SLESatin Steel Metallic 2021 GMC Sierra 1500 SLESatin Steel Metallic 2021 GMC Sierra 1500 SLESatin Steel Metallic 2021 GMC Sierra 1500 SLESatin Steel Metallic 2021 GMC Sierra 1500 SLE

    $31,000

    $400
    44,661 mi.
    Est. $571/mo

    Corwin Toyota Boulder

    4.1
    Check Availability
    Free delivery from Boulder, CO (37 mi)
    Quick view

GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $65,818 2 Good deals
2025 GMC Sierra 1500 $52,158 11 Great deals
2024 GMC Sierra 1500 $50,319 7 Great deals
2023 GMC Sierra 1500 $48,949 5 Great deals
2022 GMC Sierra 1500 $43,334 15 Good deals
2020 GMC Sierra 1500 $33,232 15 Good deals
2019 GMC Sierra 1500 $34,681 21 Good deals
2018 GMC Sierra 1500 $29,189 17 Good deals

About the 2021 GMC Sierra 1500

Basics

Base shown (base trim).

Seating
3
Door count
2
Drivetrain
Rear-wheel drive
Combined MPG
16
Transmission
6-Speed A/T
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
Side view of the 2021 GMC Sierra 1500
FAQs

How much does the 2021 GMC Sierra 1500 cost?

The 2021 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 2021 Sierra 1500 is $36,213, with pricing starting at $16,000.

What is the MPG of the 2021 GMC Sierra 1500?

The 2021 GMC Sierra 1500 offers up to 14 MPG in city driving and 19 MPG on the highway for a combined rating of 16 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 2021 GMC Sierra 1500?

The 2021 GMC Sierra 1500 compares to and/or competes against the following vehicles:


Is the 2021 GMC Sierra 1500 reliable?

The 2021 GMC Sierra 1500 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 1500 owners.

Is the 2021 GMC Sierra 1500 a good truck?

Below are the Cars.com consumer ratings for the 2021 GMC Sierra 1500.

(56 reviews)
Rating breakdown (out of 5):
Comfort
4.2
Interior
4.2
Performance
3.8
Value
3.6
Exterior
4.3
Reliability
3.5
Ratings (56 reviews)

60% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.2
Interior
4.2
Performance
3.8
Value
3.6
Exterior
4.3
Reliability
3.5
Trims

AT4 (2 styles)

Style
4WD Crew Cab 157" AT4 4WD Crew Cab 147" AT4
Inventory price
Starting at $55,900 Starting at $54,700
Combined MPG
16 17
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)

Base (7 styles)

Style
4WD Double Cab 147" 2WD Double Cab 147" 2WD Crew Cab 147" 4WD Crew Cab 147" 4WD Crew Cab 157" 4WD Reg Cab 140" 2WD Reg Cab 140"
Inventory price
Starting at $37,300 Starting at $34,000 Starting at $36,400 Starting at $39,700 Starting at $40,000 Starting at $34,700 Starting at $30,100
Combined MPG
19 21 21 19 19 16 16
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) 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 (3 styles)

Style
2WD Crew Cab 147" Denali 4WD Crew Cab 147" Denali 4WD Crew Cab 157" Denali
Inventory price
Starting at $55,800 Starting at $59,300 Starting at $59,600
Combined MPG
17 18 18
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)

Elevation (7 styles)

Style
4WD Double Cab 147" Elevation w/3VL 4WD Crew Cab 147" Elevation w/3VL 4WD Crew Cab 157" Elevation 2WD Double Cab 147" Elevation 4WD Double Cab 147" Elevation w/3SB 4WD Crew Cab 147" Elevation w/3SB 2WD Crew Cab 147" Elevation
Inventory price
Starting at $44,600 Starting at $47,200 Starting at $49,300 Starting at $43,100 Starting at $46,400 Starting at $49,000 Starting at $45,700
Combined MPG
19 19 19 21 19 19 21
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) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)

SLE (5 styles)

Style
4WD Crew Cab 147" SLE 4WD Crew Cab 157" SLE 2WD Double Cab 147" SLE 2WD Crew Cab 147" SLE 4WD Double Cab 147" SLE
Inventory price
Starting at $47,100 Starting at $47,400 Starting at $41,400 Starting at $43,800 Starting at $44,700
Combined MPG
19 19 21 21 19
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)

SLT (3 styles)

Style
4WD Crew Cab 147" SLT 2WD Crew Cab 147" SLT 4WD Crew Cab 157" SLT
Inventory price
Starting at $50,800 Starting at $47,500 Starting at $51,100
Combined MPG
18 17 18
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)
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

Similar Cars

Research the 2021 GMC Sierra 1500

Compare the 2021 GMC Sierra 1500

2021 GMC Sierra 1500 by city

2021 GMC Sierra 1500 by cab style