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  • GRAY 2021 GMC Sierra 1500 SLTGRAY 2021 GMC Sierra 1500 SLTGRAY 2021 GMC Sierra 1500 SLTGRAY 2021 GMC Sierra 1500 SLTGRAY 2021 GMC Sierra 1500 SLTGRAY 2021 GMC Sierra 1500 SLT

    $29,990

    108,641 mi.
    Est. $544/mo

    Lava Motors

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    Canton, CT (23 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. $632/mo

    Private seller: Chip

    Contact Seller
    Newtown, CT (27 mi)
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  • Satin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 Denali

    $32,995

    $2K
    105,831 mi.
    Est. $598/mo

    Highline Car Connection

    4.5
    Check Availability
    Waterbury, CT (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

    $26,952

    105,736 mi.
    Est. $489/mo

    Loehmann-Blasius Chevrolet

    4.1
    Check Availability
    Waterbury, CT (25 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. $562/mo

    Ingersoll Auto of Danbury

    4.0
    Check Availability
    Danbury, CT (26 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

    $30,000

    $1K
    81,227 mi.
    Est. $544/mo

    Ingersoll Auto of Danbury

    4.0
    Check Availability
    Danbury, CT (26 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. $616/mo

    J & M Automotive

    4.9
    Check Availability
    Naugatuck, CT (27 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

    $39,833

    59,174 mi.
    Est. $722/mo

    Loehmann-Blasius Chevrolet

    4.1
    Check Availability
    Waterbury, CT (25 mi)
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  • Dark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLE

    $24,994

    106,313 mi.
    Est. $453/mo

    Blasius Pre-Owned Auto

    3.7
    Check Availability
    Waterbury, CT (21 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

    $32,898

    62,051 mi.
    Est. $596/mo

    Loehmann-Blasius Chevrolet

    4.1
    Check Availability
    Waterbury, CT (25 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

    $34,000

    $555
    89,721 mi.
    Est. $616/mo

    Blasius Pre-Owned Auto

    3.7
    Check Availability
    Waterbury, CT (21 mi)
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  • White Frost Tricoat 2021 GMC Sierra 1500 SLTWhite Frost Tricoat 2021 GMC Sierra 1500 SLTWhite Frost Tricoat 2021 GMC Sierra 1500 SLTWhite Frost Tricoat 2021 GMC Sierra 1500 SLTWhite Frost Tricoat 2021 GMC Sierra 1500 SLTWhite Frost Tricoat 2021 GMC Sierra 1500 SLT

    $33,565

    68,463 mi.
    Est. $609/mo

    Blasius Pre-Owned Auto

    3.7
    Check Availability
    Waterbury, CT (21 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. $671/mo

    Blasius Mitsubishi

    3.2
    Check Availability
    Brookfield, CT (22 mi)
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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

    $41,995

    19,524 mi.
    Est. $761/mo

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (30 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

    $47,998

    $116
    92,981 mi.
    Est. $870/mo

    Gengras Ford

    2.3
    Check Availability
    Plainville, CT (28 mi)
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  • Dark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLE

    $34,579

    36,508 mi.
    Est. $627/mo

    Blasius of Bristol

    3.6
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    Bristol, CT (25 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. $598/mo

    J & M Automotive

    4.9
    Check Availability
    Naugatuck, CT (27 mi)
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  • $32,994

    110,568 mi.
    Est. $598/mo

    Blasius Pre-Owned Auto

    3.7
    Check Availability
    Waterbury, CT (21 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLT

    $34,898

    79,620 mi.
    Est. $633/mo

    Stephen AutoMall Centre

    3.5
    Check Availability
    Farmington, CT (27 mi)
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  • $34,990

    31,435 mi.
    Est. $634/mo

    Meadowland of Carmel

    4.2
    Check Availability
    Carmel, NY (30 mi)
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  • White 2021 GMC Sierra 1500 AT4White 2021 GMC Sierra 1500 AT4White 2021 GMC Sierra 1500 AT4White 2021 GMC Sierra 1500 AT4White 2021 GMC Sierra 1500 AT4White 2021 GMC Sierra 1500 AT4

    $44,998

    33,398 mi.
    Est. $816/mo

    CarMax Potomac Mills

    Check Availability
    $99 delivery to Waterbury, CT (26 mi)
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  • 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

    $39,998

    43,591 mi.
    Est. $725/mo

    CarMax Cleveland East

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    $149 delivery to Waterbury, CT (26 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

    $37,659

    $940
    53,356 mi.
    Est. $683/mo

    Romeo Chevrolet Buick GMC

    4.4
    Check Availability
    Lake Katrine, NY (36 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

    47,801 mi.
    Est. $597/mo

    Colandrea Buick GMC, Inc.

    4.8
    Check Availability
    Newburgh, NY (41 mi)
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  • White Frost Tri-Coat 2021 GMC Sierra 1500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 1500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 1500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 1500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 1500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 1500 Denali

    $38,750

    $245
    69,491 mi.
    Est. $703/mo

    Romeo Ford of Kingston

    4.0
    Check Availability
    Kingston, NY (37 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

    $34,990

    76,005 mi.
    Est. $634/mo

    European Motorcars

    4.0
    Check Availability
    Middletown, CT (38 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

    $33,479

    72,219 mi.
    Est. $607/mo

    Scranton GMC of Vernon

    4.4
    Check Availability
    Vernon, CT (46 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

    $30,689

    $310
    77,469 mi.
    Est. $556/mo

    Romeo Chevrolet Buick GMC

    4.4
    Check Availability
    Lake Katrine, NY (36 mi)
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  • Cardinal Red 2021 GMC Sierra 1500 BaseCardinal Red 2021 GMC Sierra 1500 Base

    $28,793

    51,617 mi.
    Est. $522/mo

    Balise Toyota

    4.4
    Check Availability
    West Springfield, MA (46 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 1500 ElevationEbony Twilight Metallic 2021 GMC Sierra 1500 ElevationEbony Twilight Metallic 2021 GMC Sierra 1500 ElevationEbony Twilight Metallic 2021 GMC Sierra 1500 ElevationEbony Twilight Metallic 2021 GMC Sierra 1500 ElevationEbony Twilight Metallic 2021 GMC Sierra 1500 Elevation

    $33,600

    $101
    69,286 mi.
    Est. $609/mo

    Middletown Nissan

    3.9
    Check Availability
    Middletown, CT (38 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

    $30,995

    $3.5K
    76,993 mi.
    Est. $562/mo

    Poughkeepsie Nissan

    4.6
    Check Availability
    Wappingers Falls, NY (32 mi)
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  • Satin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 DenaliSatin Steel Metallic 2021 GMC Sierra 1500 Denali

    $41,995

    59,490 mi.
    Est. $761/mo

    Shamrock Motors

    Check Availability
    East Windsor, CT (40 mi)
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  • 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

    $29,895

    72,487 mi.
    Est. $542/mo

    Car City LLC

    Check Availability
    East Windsor, CT (40 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

    $29,588

    $299
    94,844 mi.
    Est. $536/mo

    Shelby Motor Cars

    Check Availability
    Springfield, MA (49 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 $59,152
2025 GMC Sierra 1500 $54,697 7 Good deals
2024 GMC Sierra 1500 $48,311 7 Great deals
2023 GMC Sierra 1500 $42,612 20 Good deals
2022 GMC Sierra 1500 $41,992 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 $36,030, with pricing starting at $13,987.

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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