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  • Red Quartz Tintcoat 2020 GMC Sierra 2500 AT4

    $63,999

    33,096 mi.
    Est. $1,203/mo

    AutoNation Toyota Arapahoe

    4.8
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    Centennial, CO (915 mi)

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  • Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4

    $44,589

    158,788 mi.
    Est. $838/mo

    Group 1 Ford of Pensacola

    4.7
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    Pensacola, FL (789 mi)
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  • Pacific Blue Metallic 2020 GMC Sierra 2500 AT4Pacific Blue Metallic 2020 GMC Sierra 2500 AT4Pacific Blue Metallic 2020 GMC Sierra 2500 AT4Pacific Blue Metallic 2020 GMC Sierra 2500 AT4Pacific Blue Metallic 2020 GMC Sierra 2500 AT4Pacific Blue Metallic 2020 GMC Sierra 2500 AT4

    $59,000

    32,848 mi.
    Est. $1,109/mo

    Jacobs Motors Karma Tampa Bay

    4.0
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    Bradenton, FL (1,036 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4

    $50,981

    81,821 mi.
    Est. $958/mo

    Robert Basil Buick GMC Cadillac

    4.3
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    Orchard Park, NY (458 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $51,799

    79,906 mi.
    Est. $974/mo

    Lotspeich Automotive

    4.2
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    Warrensburg, MO (388 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $49,900

    61,951 mi.
    Est. $938/mo

    Nick Abraham Auto Mall

    4.1
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    Elyria, OH (290 mi)
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  • Black 2020 GMC Sierra 2500 AT4Black 2020 GMC Sierra 2500 AT4Black 2020 GMC Sierra 2500 AT4Black 2020 GMC Sierra 2500 AT4Black 2020 GMC Sierra 2500 AT4Black 2020 GMC Sierra 2500 AT4

    $49,986

    90,541 mi.
    Est. $940/mo

    Jim Xamis Ford Lincoln

    4.8
    Check Availability
    Lincoln, IL (151 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4

    $48,992

    86,726 mi.
    Est. $921/mo

    Woodhouse Lincoln

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    Omaha, NE (443 mi)
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  • Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4

    $52,900

    106,789 mi.
    Est. $994/mo

    Lime Ridge Auto Sales

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    Mount Joy, PA (591 mi)
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  • White 2020 GMC Sierra 2500 AT4White 2020 GMC Sierra 2500 AT4White 2020 GMC Sierra 2500 AT4White 2020 GMC Sierra 2500 AT4White 2020 GMC Sierra 2500 AT4White 2020 GMC Sierra 2500 AT4

    $50,000

    66,000 mi.
    Est. $940/mo

    Private seller: Cade

    Contact Seller
    Santa Cruz, CA (1,850 mi)
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  • WHITE 2020 GMC Sierra 2500 AT4WHITE 2020 GMC Sierra 2500 AT4WHITE 2020 GMC Sierra 2500 AT4WHITE 2020 GMC Sierra 2500 AT4WHITE 2020 GMC Sierra 2500 AT4WHITE 2020 GMC Sierra 2500 AT4

    $45,900

    147,291 mi.
    Est. $863/mo

    West State Motorsport

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    Federal Way, WA (1,726 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $62,712

    $438
    39,153 mi.
    Est. $1,179/mo

    Summit View Auto

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    Spencerport, NY (511 mi)
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  • Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4

    $48,912

    $481
    111,201 mi.
    Est. $919/mo

    Kendall Ford of Bend

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    Bend, OR (1,697 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $49,997

    $500
    86,876 mi.
    Est. $940/mo

    Michael's Auto Plaza

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    East Greenbush, NY (714 mi)
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  • Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4

    $49,995

    102,968 mi.
    Est. $940/mo

    Billion Auto - Buick GMC

    4.3
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    Sioux Falls, SD (476 mi)
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  • Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4Onyx Black 2020 GMC Sierra 2500 AT4

    $45,995

    $1K
    79,634 mi.
    Est. $865/mo

    McGovern GMC of Westborough

    4.7
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    Westborough, MA (822 mi)
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  • Brownstone Metallic 2020 GMC Sierra 2500 AT4Brownstone Metallic 2020 GMC Sierra 2500 AT4Brownstone Metallic 2020 GMC Sierra 2500 AT4Brownstone Metallic 2020 GMC Sierra 2500 AT4Brownstone Metallic 2020 GMC Sierra 2500 AT4Brownstone Metallic 2020 GMC Sierra 2500 AT4

    $54,586

    $365
    59,139 mi.
    Est. $1,026/mo

    Pierre GMC of Everett

    4.8
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    Everett, WA (1,728 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $54,990

    66,321 mi.
    Est. $1,034/mo

    David Scott Lee Chevrolet GMC

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    Troy, AL (700 mi)
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  • Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4Carbon Black Metallic 2020 GMC Sierra 2500 AT4

    $48,849

    $800
    99,527 mi.
    Est. $918/mo

    Tom Kadlec Honda

    4.7
    Check Availability
    Rochester, MN (288 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $44,900

    $4.1K
    85,697 mi.
    Est. $844/mo

    Greensboro Chrysler Dodge Jeep Ram

    4.7
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    Greensboro, NC (579 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $42,666

    $878
    142,005 mi.
    Est. $802/mo

    Camp County Chrysler Dodge Jeep Ram

    4.4
    Check Availability
    Pittsburg, TX (732 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4Dark Sky Metallic 2020 GMC Sierra 2500 AT4

    $43,990

    100,704 mi.
    Est. $827/mo

    Auto Factory

    4.3
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    Peabody, MA (852 mi)
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  • Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4Summit White 2020 GMC Sierra 2500 AT4

    $48,495

    77,223 mi.
    Est. $912/mo

    Cook Chevrolet Inc

    4.1
    Check Availability
    Vassar, MI (230 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 AT4 8 Great deals
2025 GMC Sierra 2500 AT4 $75,059 23 Great deals
2024 GMC Sierra 2500 AT4 $70,637 6 Great deals
2023 GMC Sierra 2500 AT4 $57,227 25 Great deals
2022 GMC Sierra 2500 AT4 $54,263 35 Great deals
2021 GMC Sierra 2500 AT4 $53,179 57 Good deals

About the 2020 GMC Sierra 2500 AT4

Basics

AT4 shown.

Seating
5
Door count
4
Drivetrain
Four 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 2020 GMC Sierra 2500 AT4
FAQs

How much does the 2020 GMC Sierra 2500 AT4 cost?

The 2020 GMC Sierra 2500 AT4 price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 2500 AT4 is $49,654, with pricing starting at $37,195.

What are some similar vehicles and competitors of the 2020 GMC Sierra 2500 AT4?

The 2020 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:


Is the 2020 GMC Sierra 2500 AT4 reliable?

The 2020 GMC Sierra 2500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 2500 owners.

Ratings (23 reviews)

91% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
4.8
Value
4.5
Exterior
4.9
Reliability
4.7
Trims

AT4 (2 styles)

Style
4WD Crew Cab 172" AT4 4WD Crew Cab 159" AT4
Inventory price
Starting at $58,500 Starting at $58,300
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)
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GMC Sierra 2500 trims