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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

    $54,896

    76,640 mi.
    Est. $1,032/mo

    Van Horn Chevrolet of Plymouth

    4.4
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    Plymouth, WI (130 mi)

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  • Red Quartz Tintcoat 2020 GMC Sierra 2500 AT4

    $63,999

    33,101 mi.
    Est. $1,203/mo

    AutoNation Toyota Arapahoe

    4.8
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    Centennial, CO (915 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

    $58,000

    32,848 mi.
    Est. $1,090/mo

    Jacobs Motors Karma Tampa Bay

    4.0
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    Bradenton, FL (1,036 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

    $50,649

    105,730 mi.
    Est. $952/mo

    CarShop Chester Springs

    4.8
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    Chester Springs, PA (636 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

    $54,576

    69,140 mi.
    Est. $1,026/mo

    AutoNation Dodge Ram Broadway

    4.4
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    Littleton, CO (920 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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  • 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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  • 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
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    Lincoln, IL (151 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

    $52,941

    67,528 mi.
    Est. $995/mo

    Coggin Buick GMC

    4.5
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    Jacksonville, FL (871 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

    $45,399

    $400
    85,697 mi.
    Est. $853/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

    $42,377

    $289
    142,005 mi.
    Est. $797/mo

    Camp County Chrysler Dodge Jeep Ram

    4.4
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    Pittsburg, TX (732 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

    $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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  • 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 AT4

    $36,900

    192,240 mi.
    Est. $694/mo

    Lee Motor Company

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    Monroeville, AL (716 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

    86,876 mi.
    Est. $940/mo

    Michael's Auto Plaza

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    East Greenbush, NY (714 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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  • 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

    $49,225

    93,731 mi.
    Est. $925/mo

    Paul Sherry Chrysler Dodge Jeep RAM

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    Piqua, OH (214 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

    118,903 mi.
    Est. $863/mo

    Mark's Auto Mart

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    Fort Dodge, IA (338 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

    $40,990

    195,214 mi.
    Est. $770/mo

    Findlay Toyota Prescott

    4.8
    Check Availability
    Prescott, AZ (1,432 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

    $59,988

    103,204 mi.
    Est. $1,128/mo

    Mall of Georgia Mazda

    4.9
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    Buford, GA (575 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

    $50,581

    $400
    81,821 mi.
    Est. $951/mo

    Robert Basil Buick GMC Cadillac

    4.3
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    Orchard Park, NY (458 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

    102,969 mi.
    Est. $940/mo

    Billion Auto - Buick GMC

    4.4
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    Sioux Falls, SD (476 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

    $48,727

    103,096 mi.
    Est. $916/mo

    Serra Chevrolet of Saginaw

    4.7
    Check Availability
    Saginaw, MI (216 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

    $48,995

    87,739 mi.
    Est. $921/mo

    Luther Family Buick GMC

    4.5
    Check Availability
    Fargo, ND (569 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 $74,875 18 Great deals
2024 GMC Sierra 2500 AT4 $70,554 8 Great deals
2023 GMC Sierra 2500 AT4 $57,792 31 Great deals
2022 GMC Sierra 2500 AT4 $54,026 32 Great deals
2021 GMC Sierra 2500 AT4 $53,856 5 Great 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 $50,340, with pricing starting at $34,956.

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