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  • Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4

    $35,111

    $1K
    111,201 mi.
    Est. $632/mo

    Berlin City Toyota of Portland

    4.1
    Check Availability
    Portland, ME (22 mi)
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  • 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

    $44,229

    $836
    24,080 mi.
    Est. $796/mo

    Morong Falmouth Mazda

    4.8
    Check Availability
    Falmouth, ME (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

    $25,242

    122,338 mi.
    Est. $454/mo

    Ira Toyota Saco

    4.5
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    Saco, ME (13 mi)
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  • 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

    $34,999

    91,445 mi.
    Est. $630/mo

    Key GMC of Rochester

    4.7
    Check Availability
    Rochester, NH (22 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

    $31,784

    70,179 mi.
    Est. $572/mo

    Rowe Ford Westbrook

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    Westbrook, ME (22 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

    $24,913

    $508
    80,154 mi.
    Est. $448/mo

    Somersworth Nissan

    3.8
    Check Availability
    Somersworth, NH (20 mi)
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  • Summit White 2021 GMC Sierra 1500 SLTSummit White 2021 GMC Sierra 1500 SLTSummit White 2021 GMC Sierra 1500 SLTSummit White 2021 GMC Sierra 1500 SLTSummit White 2021 GMC Sierra 1500 SLTSummit White 2021 GMC Sierra 1500 SLT

    $35,985

    77,442 mi.
    Est. $647/mo

    Bill Dodge GMC Buick

    4.5
    Check Availability
    Westbrook, ME (22 mi)
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  • 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

    $30,893

    $391
    74,603 mi.
    Est. $556/mo

    Berlin City Toyota of Portland

    4.1
    Check Availability
    Portland, ME (22 mi)
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  • 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

    $30,980

    118,118 mi.
    Est. $557/mo

    Bill Dodge GMC Buick

    4.5
    Check Availability
    Westbrook, ME (22 mi)
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  • White Frost Tricoat 2021 GMC Sierra 1500 DenaliWhite Frost Tricoat 2021 GMC Sierra 1500 DenaliWhite Frost Tricoat 2021 GMC Sierra 1500 DenaliWhite Frost Tricoat 2021 GMC Sierra 1500 DenaliWhite Frost Tricoat 2021 GMC Sierra 1500 DenaliWhite Frost Tricoat 2021 GMC Sierra 1500 Denali

    $32,884

    $767
    109,928 mi.
    Est. $591/mo

    Bill Dodge GMC Buick

    4.5
    Check Availability
    Westbrook, ME (22 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLTQuicksilver Metallic 2021 GMC Sierra 1500 SLTQuicksilver Metallic 2021 GMC Sierra 1500 SLTQuicksilver Metallic 2021 GMC Sierra 1500 SLTQuicksilver Metallic 2021 GMC Sierra 1500 SLTQuicksilver Metallic 2021 GMC Sierra 1500 SLT

    $32,600

    $1K
    110,292 mi.
    Est. $586/mo

    Weirs Motor Sales, Inc.

    4.5
    Check Availability
    Arundel, ME (10 mi)
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  • 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

    $44,855

    $1.1K
    63,962 mi.
    Est. $807/mo

    Bill Dodge GMC Buick

    4.5
    Check Availability
    Westbrook, ME (22 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLE

    $29,307

    62,085 mi.
    Est. $527/mo

    Berlin City Toyota of Portland

    4.1
    Check Availability
    Portland, ME (22 mi)
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  • $42,125

    65,206 mi.
    Est. $758/mo

    Weirs Motor Sales, Inc.

    4.5
    Check Availability
    Arundel, ME (10 mi)
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  • $36,873

    102,521 mi.
    Est. $663/mo

    Weirs Motor Sales, Inc.

    4.5
    Check Availability
    Arundel, ME (10 mi)
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  • Onyx Black 2021 GMC Sierra 1500 SLE

    $37,445

    17,287 mi.
    Est. $674/mo

    Yankee Ford

    4.8
    Check Availability
    South Portland, ME (24 mi)
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  • Red 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLE

    $31,998

    45,148 mi.
    Est. $576/mo

    CarMax Charlottesville

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    $449 delivery to South Portland, ME (20 mi)
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  • 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

    $34,973

    $379
    43,533 mi.
    Est. $629/mo

    Irwin Automotive Group

    4.7
    Check Availability
    Free delivery from Laconia, NH (40 mi)
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  • Dark Sky Metallic 2021 GMC Sierra 1500 BaseDark Sky Metallic 2021 GMC Sierra 1500 BaseDark Sky Metallic 2021 GMC Sierra 1500 BaseDark Sky Metallic 2021 GMC Sierra 1500 BaseDark Sky Metallic 2021 GMC Sierra 1500 BaseDark Sky Metallic 2021 GMC Sierra 1500 Base

    $29,990

    70,332 mi.
    Est. $539/mo

    Crafts Cars

    4.7
    Check Availability
    Lisbon Falls, ME (47 mi)
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  • 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

    $31,488

    66,865 mi.
    Est. $566/mo

    K&R Auto Sales

    4.1
    Check Availability
    Auburn, ME (50 mi)
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  • 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

    $29,999

    118,425 mi.
    Est. $540/mo

    Tim's Truck Capital & Auto Sales Inc

    4.5
    Check Availability
    Epsom, NH (39 mi)
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  • Summit White 2021 GMC Sierra 1500 BaseSummit White 2021 GMC Sierra 1500 BaseSummit White 2021 GMC Sierra 1500 BaseSummit White 2021 GMC Sierra 1500 BaseSummit White 2021 GMC Sierra 1500 BaseSummit White 2021 GMC Sierra 1500 Base

    $22,999

    $500
    112,499 mi.
    Est. $414/mo

    Tim's Truck Capital & Auto Sales Inc

    4.5
    Check Availability
    Epsom, NH (39 mi)
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  • Onyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 Elevation

    $24,608

    88,421 mi.
    Est. $443/mo

    Irwin Automotive Group

    4.7
    Check Availability
    Laconia, NH (40 mi)
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  • Onyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 ElevationOnyx Black 2021 GMC Sierra 1500 Elevation

    $28,987

    $500
    93,435 mi.
    Est. $521/mo

    Banks Chevy GMC Buick

    4.8
    Check Availability
    Concord, NH (47 mi)
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  • Cayenne Red 2021 GMC Sierra 1500 DenaliCayenne Red 2021 GMC Sierra 1500 DenaliCayenne Red 2021 GMC Sierra 1500 DenaliCayenne Red 2021 GMC Sierra 1500 DenaliCayenne Red 2021 GMC Sierra 1500 DenaliCayenne Red 2021 GMC Sierra 1500 Denali

    $44,500

    39,856 mi.
    Est. $800/mo

    Lee GMC Truck Center

    4.4
    Check Availability
    Auburn, ME (50 mi)
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  • 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

    $31,500

    80,546 mi.
    Est. $567/mo

    Lee Chrysler Jeep Dodge Ram Auburn

    Check Availability
    Auburn, ME (50 mi)
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  • 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

    $40,994

    60,095 mi.
    Est. $737/mo

    Lee Chrysler Jeep Dodge Ram Auburn

    Check Availability
    Auburn, ME (50 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $58,722 3 Good deals
2024 GMC Sierra 1500 $49,491 5 Good deals
2023 GMC Sierra 1500 $42,553 8 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 $36,255, with pricing starting at $16,199.

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 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)
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