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
  • Pacific Blue Metallic 2021 GMC Sierra 1500 SLTPacific Blue Metallic 2021 GMC Sierra 1500 SLTPacific Blue Metallic 2021 GMC Sierra 1500 SLTPacific Blue Metallic 2021 GMC Sierra 1500 SLTPacific Blue Metallic 2021 GMC Sierra 1500 SLTPacific Blue Metallic 2021 GMC Sierra 1500 SLT

    $38,950

    73,982 mi.
    Est. $724/mo

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 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

    $38,994

    $1K
    115,000 mi.
    Est. $725/mo

    Tony Serra Nissan Cullman

    4.4
    Check Availability
    Cullman, AL (28 mi)
    Quick view
  • Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4

    $37,997

    129,551 mi.
    Est. $706/mo

    Huntsville Trucks

    Check Availability
    Huntsville, AL (25 mi)
    Quick view
  • White Frost Tricoat 2021 GMC Sierra 1500 Denali UltimateWhite Frost Tricoat 2021 GMC Sierra 1500 Denali UltimateWhite Frost Tricoat 2021 GMC Sierra 1500 Denali UltimateWhite Frost Tricoat 2021 GMC Sierra 1500 Denali UltimateWhite Frost Tricoat 2021 GMC Sierra 1500 Denali UltimateWhite Frost Tricoat 2021 GMC Sierra 1500 Denali Ultimate

    $47,000

    86,313 mi.
    Est. $873/mo

    Heath Attaway Auto Sales

    Check Availability
    Cullman, AL (27 mi)
    Quick view
  • Cardinal Red 2021 GMC Sierra 1500 AT4Cardinal Red 2021 GMC Sierra 1500 AT4Cardinal Red 2021 GMC Sierra 1500 AT4Cardinal Red 2021 GMC Sierra 1500 AT4Cardinal Red 2021 GMC Sierra 1500 AT4Cardinal Red 2021 GMC Sierra 1500 AT4

    $43,000

    100,483 mi.
    Est. $799/mo

    Heath Attaway Auto Sales

    Check Availability
    Cullman, AL (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

    $38,995

    125,250 mi.
    Est. $725/mo

    Billy Ray Taylor Auto Sales

    Check Availability
    Cullman, AL (25 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

    $34,980

    104,713 mi.
    Est. $650/mo

    Tony Serra Nissan Cullman

    4.4
    Check Availability
    Cullman, AL (28 mi)
    Quick view
  • Not Priced

    128,061 mi.

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 mi)
    Quick view
  • Not Priced

    113,420 mi.

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 mi)
    Quick view
  • $45,900

    42,640 mi.
    Est. $853/mo

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 mi)
    Quick view
  • Not Priced

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 mi)
    Quick view
  • $43,900

    52,542 mi.
    Est. $816/mo

    Bill Smith Buick GMC

    4.8
    Check Availability
    Cullman, AL (25 mi)
    Quick view
  • Black 2021 GMC Sierra 1500 DenaliBlack 2021 GMC Sierra 1500 DenaliBlack 2021 GMC Sierra 1500 DenaliBlack 2021 GMC Sierra 1500 DenaliBlack 2021 GMC Sierra 1500 DenaliBlack 2021 GMC Sierra 1500 Denali

    $43,998

    51,007 mi.
    Est. $818/mo

    CarMax South Boulevard

    5.0
    Check Availability
    $199 delivery to Huntsville, AL (22 mi)
    Quick view
  • Black 2021 GMC Sierra 1500 ElevationBlack 2021 GMC Sierra 1500 ElevationBlack 2021 GMC Sierra 1500 ElevationBlack 2021 GMC Sierra 1500 ElevationBlack 2021 GMC Sierra 1500 ElevationBlack 2021 GMC Sierra 1500 Elevation

    $30,998

    47,779 mi.
    Est. $576/mo

    CarMax Kenner

    Check Availability
    $249 delivery to Huntsville, AL (22 mi)
    Quick view
  • Summit White 2021 GMC Sierra 1500Summit White 2021 GMC Sierra 1500Summit White 2021 GMC Sierra 1500Summit White 2021 GMC Sierra 1500Summit White 2021 GMC Sierra 1500Summit White 2021 GMC Sierra 1500

    $25,400

    145,218 mi.
    Est. $472/mo

    North Alabama Cars

    4.9
    Check Availability
    Arab, AL (31 mi)
    Quick view
  • Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4Gray 2021 GMC Sierra 1500 AT4

    $42,988

    65,765 mi.
    Est. $799/mo

    Valley Chevrolet GMC

    2.6
    Check Availability
    Fayetteville, TN (47 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 ELEVATIONSatin Steel Metallic 2021 GMC Sierra 1500 ELEVATIONSatin Steel Metallic 2021 GMC Sierra 1500 ELEVATIONSatin Steel Metallic 2021 GMC Sierra 1500 ELEVATIONSatin Steel Metallic 2021 GMC Sierra 1500 ELEVATIONSatin Steel Metallic 2021 GMC Sierra 1500 ELEVATION

    $36,942

    77,346 mi.
    Est. $687/mo

    Long-Lewis Ford of the Shoals

    4.8
    Check Availability
    Muscle Shoals, AL (43 mi)
    Quick view
  • Cardinal Red 2021 GMC Sierra 1500 SLECardinal Red 2021 GMC Sierra 1500 SLECardinal Red 2021 GMC Sierra 1500 SLECardinal Red 2021 GMC Sierra 1500 SLECardinal Red 2021 GMC Sierra 1500 SLECardinal Red 2021 GMC Sierra 1500 SLE

    $30,900

    97,991 mi.
    Est. $574/mo

    Thompson Motors Inc.

    Check Availability
    Oneonta, AL (50 mi)
    Quick view
  • Satin Steel Metallic 2021 GMC Sierra 1500 SLT

    $35,277

    106,081 mi.
    Est. $656/mo

    Singing River Nissan

    Check Availability
    Florence, AL (43 mi)
    Quick view

GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $59,086 1 Good deal
2025 GMC Sierra 1500 $63,693 5 Great deals
2024 GMC Sierra 1500 $60,070 9 Good deals
2023 GMC Sierra 1500 $49,765 9 Great deals
2022 GMC Sierra 1500 $45,378 4 Good deals
2020 GMC Sierra 1500 $37,487 4 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 $36,395, with pricing starting at $1.

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.

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 Reg Cab 140" 2WD Reg Cab 140" 2WD Crew Cab 147" 4WD Crew Cab 147" 4WD Crew Cab 157" 4WD Double Cab 147" 2WD Double Cab 147"
Inventory price
Starting at $34,700 Starting at $30,100 Starting at $36,400 Starting at $39,700 Starting at $40,000 Starting at $37,300 Starting at $34,000
Combined MPG
16 16 21 19 19 19 21
Engine
285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) 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)

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