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  • Cayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 Denali

    $55,994

    $1.4K
    61,061 mi.
    Est. $1,052/mo

    CarHeroes Ford of Lenoir

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    Lenoir, NC (528 mi)

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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $55,775

    $2.1K
    68,424 mi.
    Est. $1,048/mo

    Starling Buick GMC Stuart

    4.9
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    Stuart, FL (1,095 mi)

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  • Onyx Black 2021 GMC Sierra 3500 SLTOnyx Black 2021 GMC Sierra 3500 SLTOnyx Black 2021 GMC Sierra 3500 SLTOnyx Black 2021 GMC Sierra 3500 SLTOnyx Black 2021 GMC Sierra 3500 SLTOnyx Black 2021 GMC Sierra 3500 SLT

    $49,333

    103,196 mi.
    Est. $927/mo

    Jerry Seiner North Salt Lake GMC

    3.1
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    North Salt Lake, UT (1,256 mi)
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  • Cayenne Red Tintcoat 2021 GMC Sierra 3500 SLECayenne Red Tintcoat 2021 GMC Sierra 3500 SLECayenne Red Tintcoat 2021 GMC Sierra 3500 SLECayenne Red Tintcoat 2021 GMC Sierra 3500 SLECayenne Red Tintcoat 2021 GMC Sierra 3500 SLECayenne Red Tintcoat 2021 GMC Sierra 3500 SLE

    $52,486

    $200
    41,762 mi.
    Est. $987/mo

    Dan Cummins Chevrolet Buick of Paris

    4.7
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    Paris, KY (311 mi)
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  • Red 2021 GMC Sierra 3500 BaseRed 2021 GMC Sierra 3500 BaseRed 2021 GMC Sierra 3500 BaseRed 2021 GMC Sierra 3500 BaseRed 2021 GMC Sierra 3500 BaseRed 2021 GMC Sierra 3500 Base

    $29,750

    100,490 mi.
    Est. $559/mo

    Kevin Grover GMC

    4.9
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    Wagoner, OK (585 mi)
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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $50,250

    97,650 mi.
    Est. $945/mo

    Walser Buick GMC Roseville

    4.2
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    Roseville, MN (354 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 Denali

    $48,988

    $1.9K
    115,812 mi.
    Est. $921/mo

    Corwin Ford of Springfield

    4.8
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    Springfield, MO (444 mi)
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  • Summit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLE

    $36,338

    $2K
    151,936 mi.
    Est. $683/mo

    Freeman Buick GMC

    3.2
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    Grapevine, TX (807 mi)

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  • White Frost Tri-Coat 2021 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 3500 Denali

    $59,664

    45,792 mi.
    Est. $1,121/mo

    ALM Roswell

    4.3
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    Roswell, GA (571 mi)
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  • Onyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 Base

    $38,965

    80,454 mi.
    Est. $732/mo

    Penske Chevrolet

    4.7
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    Indianapolis, IN (157 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 Denali

    $54,352

    $1K
    95,699 mi.
    Est. $1,022/mo

    Schumacher Buick GMC of West Palm Beach

    4.8
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    West Palm Beach, FL (1,133 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $54,185

    $510
    87,837 mi.
    Est. $1,018/mo

    Auto Boutique Jacksonville

    4.5
    Check Availability
    Jacksonville, FL (870 mi)
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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $56,990

    $1.4K
    62,000 mi.
    Est. $1,071/mo

    Bomnin Chevrolet West Kendall

    4.9
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    Miami, FL (1,197 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $59,000

    $2K
    50,936 mi.
    Est. $1,109/mo

    Kelley Buick GMC of Bartow

    4.1
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    Bartow, FL (1,020 mi)

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  • White Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 Denali

    $53,351

    103,644 mi.
    Est. $1,003/mo

    Freedom Chrysler Dodge Jeep Ram North by Ed Morse

    4.7
    Check Availability
    Sherman, TX (750 mi)
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  • Summit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLESummit White 2021 GMC Sierra 3500 SLE

    $45,119

    105,507 mi.
    Est. $848/mo

    James River Chrysler Dodge Jeep Ram

    4.0
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    Ozark, MO (447 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $61,175

    36,209 mi.
    Est. $1,150/mo

    Minnesota Motor Co

    4.6
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    Fergus Falls, MN (516 mi)
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  • Brownstone Metallic 2021 GMC Sierra 3500 BaseBrownstone Metallic 2021 GMC Sierra 3500 BaseBrownstone Metallic 2021 GMC Sierra 3500 BaseBrownstone Metallic 2021 GMC Sierra 3500 BaseBrownstone Metallic 2021 GMC Sierra 3500 BaseBrownstone Metallic 2021 GMC Sierra 3500 Base

    $44,500

    75,641 mi.
    Est. $836/mo

    Berkenkotter Motors Castle Rock

    4.5
    Check Availability
    Castle Rock, CO (919 mi)
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  • Carbon Black Metallic 2021 GMC Sierra 3500 DenaliCarbon Black Metallic 2021 GMC Sierra 3500 DenaliCarbon Black Metallic 2021 GMC Sierra 3500 DenaliCarbon Black Metallic 2021 GMC Sierra 3500 DenaliCarbon Black Metallic 2021 GMC Sierra 3500 DenaliCarbon Black Metallic 2021 GMC Sierra 3500 Denali

    $46,249

    $1K
    122,372 mi.
    Est. $869/mo

    Dahl Chevrolet GMC Winona

    4.8
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    Winona, MN (253 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $57,339

    62,530 mi.
    Est. $1,078/mo

    Thompson Buick, GMC, Cadillac

    4.8
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    Springfield, MO (444 mi)

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  • Black 2021 GMC Sierra 3500 AT4Black 2021 GMC Sierra 3500 AT4Black 2021 GMC Sierra 3500 AT4Black 2021 GMC Sierra 3500 AT4Black 2021 GMC Sierra 3500 AT4Black 2021 GMC Sierra 3500 AT4

    $61,998

    43,427 mi.
    Est. $1,165/mo

    CarMax Omaha

    4.4
    Check Availability
    Omaha, NE (444 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $55,000

    90,199 mi.
    Est. $1,034/mo

    H. M. Brown Automotive

    5.0
    Check Availability
    Centennial, CO (913 mi)
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  • Onyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 BaseOnyx Black 2021 GMC Sierra 3500 Base

    $34,000

    65,054 mi.
    Est. $639/mo

    Sign It Drive It

    4.1
    Check Availability
    Denton, TX (792 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $59,130

    59,848 mi.
    Est. $1,111/mo

    AutoNation USA San Antonio

    4.6
    Check Availability
    San Antonio, TX (1,047 mi)
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  • Onyx Black 2021 GMC Sierra 3500 SLEOnyx Black 2021 GMC Sierra 3500 SLEOnyx Black 2021 GMC Sierra 3500 SLEOnyx Black 2021 GMC Sierra 3500 SLEOnyx Black 2021 GMC Sierra 3500 SLEOnyx Black 2021 GMC Sierra 3500 SLE

    $48,641

    89,286 mi.
    Est. $914/mo

    101 AUTO OUTLET

    4.0
    Check Availability
    Scottsdale, AZ (1,445 mi)
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  • Cayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 Denali

    $55,473

    $104
    73,998 mi.
    Est. $1,043/mo

    Ken Garff VW Gilbert

    4.2
    Check Availability
    Gilbert, AZ (1,442 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 Denali

    $38,980

    218,533 mi.
    Est. $733/mo

    Dave Kehl Chevrolet

    4.3
    Check Availability
    Mechanicsburg, OH (247 mi)
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  • White 2021 GMC Sierra 3500 BaseWhite 2021 GMC Sierra 3500 BaseWhite 2021 GMC Sierra 3500 BaseWhite 2021 GMC Sierra 3500 BaseWhite 2021 GMC Sierra 3500 BaseWhite 2021 GMC Sierra 3500 Base

    $45,348

    22,457 mi.
    Est. $852/mo

    Classic Buick GMC Painesville

    4.7
    Check Availability
    Painesville, OH (328 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 $82,810 16 Great deals
2025 GMC Sierra 3500 $73,790 87 Great deals
2024 GMC Sierra 3500 $69,487 136 Great deals
2023 GMC Sierra 3500 $57,398 22 Great deals
2022 GMC Sierra 3500 $54,421 52 Great deals
2020 GMC Sierra 3500 $51,711 42 Great deals
2019 GMC Sierra 3500 $43,704 26 Great deals
2018 GMC Sierra 3500 $42,418 20 Great deals
2017 GMC Sierra 3500 $39,045 10 Great deals

About the 2021 GMC Sierra 3500

Basics

Base shown (base trim).

Seating
2
Door count
2
Drivetrain
Rear-wheel drive
Combined MPG
0
Transmission
6-Speed A/T
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Side view of the 2021 GMC Sierra 3500
FAQs

How much does the 2021 GMC Sierra 3500 cost?

The 2021 GMC Sierra 3500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 3500 is $52,539, with pricing starting at $29,750.

What are some similar vehicles and competitors of the 2021 GMC Sierra 3500?

The 2021 GMC Sierra 3500 compares to and/or competes against the following vehicles:


Is the 2021 GMC Sierra 3500 reliable?

The 2021 GMC Sierra 3500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 3500 owners.

Is the 2021 GMC Sierra 3500 a good truck?

Below are the Cars.com consumer ratings for the 2021 GMC Sierra 3500.

(2 reviews)
Rating breakdown (out of 5):
Comfort
4.5
Interior
4.5
Performance
5.0
Value
4.0
Exterior
4.5
Reliability
4.0
Ratings (2 reviews)

100% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.5
Interior
4.5
Performance
5.0
Value
4.0
Exterior
4.5
Reliability
4.0
Trims

AT4 (2 styles)

Style
4WD Crew Cab 172" AT4 4WD Crew Cab 159" AT4
Inventory price
Starting at $60,500 Starting at $60,300
Combined MPG
0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

Base (8 styles)

Style
2WD Double Cab 162" 4WD Double Cab 162" 4WD Crew Cab 172" 4WD Crew Cab 159" 2WD Crew Cab 159" 2WD Crew Cab 172" 4WD Reg Cab 142" 2WD Reg Cab 142"
Inventory price
Starting at $40,200 Starting at $43,000 Starting at $44,800 Starting at $44,600 Starting at $41,800 Starting at $42,000 Starting at $40,200 Starting at $37,400
Combined MPG
0 0 0 0 0 0 0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

Denali (2 styles)

Style
4WD Crew Cab 159" Denali 4WD Crew Cab 172" Denali
Inventory price
Starting at $66,700 Starting at $66,900
Combined MPG
0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

SLE (8 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 4WD Crew Cab 159" SLE 4WD Crew Cab 172" SLE 2WD Crew Cab 159" SLE 2WD Crew Cab 172" SLE 2WD Double Cab 162" SLE 4WD Double Cab 162" SLE
Inventory price
Starting at $45,600 Starting at $42,800 Starting at $49,400 Starting at $49,600 Starting at $46,600 Starting at $46,800 Starting at $45,000 Starting at $47,800
Combined MPG
0 0 0 0 0 0 0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

SLT (4 styles)

Style
4WD Crew Cab 172" SLT 2WD Crew Cab 159" SLT 2WD Crew Cab 172" SLT 4WD Crew Cab 159" SLT
Inventory price
Starting at $57,600 Starting at $54,600 Starting at $54,800 Starting at $57,400
Combined MPG
0 0 0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
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