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  • Black 2021 GMC Sierra 1500 SLTBlack 2021 GMC Sierra 1500 SLTBlack 2021 GMC Sierra 1500 SLTBlack 2021 GMC Sierra 1500 SLTBlack 2021 GMC Sierra 1500 SLTBlack 2021 GMC Sierra 1500 SLT

    $41,794

    $201
    19,524 mi.
    Est. $772/mo

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (21 mi)
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  • 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

    $32,900

    61,000 mi.
    Est. $608/mo

    Colandrea Buick GMC, Inc.

    4.8
    Check Availability
    Newburgh, NY (28 mi)
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  • 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

    $37,995

    63,437 mi.
    Est. $702/mo

    Superior Auto Sales

    Check Availability
    New Windsor, NY (28 mi)
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  • White Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 Denali

    $31,000

    95,820 mi.
    Est. $573/mo

    Ingersoll Auto of Danbury

    4.0
    Check Availability
    Danbury, CT (29 mi)
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  • $33,999

    $991
    31,435 mi.
    Est. $628/mo

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (21 mi)
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  • Not Priced

    0 mi.

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (21 mi)
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  • Not Priced

    0 mi.
    Est. $0/mo

    Fast Track Motors

    3.3
    Check Availability
    Paterson, NJ (23 mi)
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  • $45,000

    37,871 mi.
    Est. $831/mo

    Colandrea Buick GMC, Inc.

    4.8
    Check Availability
    Newburgh, NY (28 mi)
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  • $49,900

    $2K
    4,310 mi.
    Est. $922/mo

    Colandrea Buick GMC, Inc.

    4.8
    Check Availability
    Newburgh, NY (28 mi)
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  • 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

    $32,495

    72,076 mi.
    Est. $600/mo

    Bob Johnson Used

    4.0
    Check Availability
    $399 delivery from Rochester, NY (235 mi)
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  • 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

    $36,998

    50,372 mi.
    Est. $684/mo

    CarMax Hartford

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    $99 delivery to Wayne, NJ (27 mi)
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  • 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

    $33,995

    81,478 mi.
    Est. $628/mo

    J & M Automotive

    4.9
    Check Availability
    Naugatuck, CT (48 mi)
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  • White Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 DenaliWhite Frost 2021 GMC Sierra 1500 Denali

    $42,967

    42,554 mi.
    Est. $794/mo

    East Hills Subaru of Sayville

    4.8
    Check Availability
    Sayville, NY (48 mi)
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  • Cardinal Red 2021 GMC Sierra 1500 SLTCardinal Red 2021 GMC Sierra 1500 SLTCardinal Red 2021 GMC Sierra 1500 SLT

    $32,995

    91,289 mi.
    Est. $610/mo

    J & M Automotive

    4.9
    Check Availability
    Naugatuck, CT (48 mi)
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  • 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

    $32,500

    69,754 mi.
    Est. $601/mo

    GMC of Watertown

    3.8
    Check Availability
    Watertown, CT (49 mi)
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  • 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

    $36,989

    44,239 mi.
    Est. $683/mo

    Blasius Mitsubishi

    3.1
    Check Availability
    Brookfield, CT (32 mi)
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  • Hunter Metallic 2021 GMC Sierra 1500 DenaliHunter Metallic 2021 GMC Sierra 1500 DenaliHunter Metallic 2021 GMC Sierra 1500 DenaliHunter Metallic 2021 GMC Sierra 1500 DenaliHunter Metallic 2021 GMC Sierra 1500 DenaliHunter Metallic 2021 GMC Sierra 1500 Denali

    $38,075

    75,901 mi.
    Est. $704/mo

    Sawyer Lyons Buick GMC of Randolph

    3.7
    Check Availability
    Randolph, NJ (46 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 1500 DenaliPacific Blue Metallic 2021 GMC Sierra 1500 DenaliPacific Blue Metallic 2021 GMC Sierra 1500 DenaliPacific Blue Metallic 2021 GMC Sierra 1500 DenaliPacific Blue Metallic 2021 GMC Sierra 1500 DenaliPacific Blue Metallic 2021 GMC Sierra 1500 Denali

    $40,995

    $998
    69,255 mi.
    Est. $757/mo

    Franklin Sussex Auto Mall

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    North Sussex, NJ (40 mi)
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  • Blue 2021 GMC Sierra 1500 AT4Blue 2021 GMC Sierra 1500 AT4Blue 2021 GMC Sierra 1500 AT4Blue 2021 GMC Sierra 1500 AT4Blue 2021 GMC Sierra 1500 AT4Blue 2021 GMC Sierra 1500 AT4

    $34,875

    141,300 mi.
    Est. $644/mo

    Private seller: Chip

    Contact Seller
    Newtown, CT (32 mi)
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  • Onyx Black Gba 2021 GMC Sierra 1500 DenaliOnyx Black Gba 2021 GMC Sierra 1500 DenaliOnyx Black Gba 2021 GMC Sierra 1500 DenaliOnyx Black Gba 2021 GMC Sierra 1500 DenaliOnyx Black Gba 2021 GMC Sierra 1500 DenaliOnyx Black Gba 2021 GMC Sierra 1500 Denali

    $47,995

    28,173 mi.
    Est. $887/mo

    King O'Rourke Auto Group

    2.9
    Check Availability
    Smithtown, NY (41 mi)
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  • Cayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 ElevationCayenne Red Tintcoat Gsk 2021 GMC Sierra 1500 Elevation

    $42,995

    24,442 mi.
    Est. $794/mo

    King O'Rourke Auto Group

    2.9
    Check Availability
    Smithtown, NY (41 mi)
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  • Quicksilver Metal 2021 GMC Sierra 1500 ElevationQuicksilver Metal 2021 GMC Sierra 1500 ElevationQuicksilver Metal 2021 GMC Sierra 1500 ElevationQuicksilver Metal 2021 GMC Sierra 1500 ElevationQuicksilver Metal 2021 GMC Sierra 1500 ElevationQuicksilver Metal 2021 GMC Sierra 1500 Elevation

    $41,995

    47,796 mi.
    Est. $776/mo

    King O'Rourke Auto Group

    2.9
    Check Availability
    Smithtown, NY (41 mi)
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  • $34,092

    $1.3K
    51,304 mi.
    Est. $630/mo

    Generation Buick GMC

    4.0
    Check Availability
    Bohemia, NY (47 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $61,185 3 Good deals
2024 GMC Sierra 1500 $49,591 19 Good deals
2023 GMC Sierra 1500 $42,527 15 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 $36,129, 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)
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