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  • Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4

    $52,896

    61,055 mi.
    Est. $984/mo

    AutoNation Chevrolet North

    3.7
    Check Availability
    Denver, CO (6 mi)
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  • White Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 Denali

    $62,419

    34,599 mi.
    Est. $1,162/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (13 mi)
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  • Black 2021 GMC Sierra 2500 DenaliBlack 2021 GMC Sierra 2500 DenaliBlack 2021 GMC Sierra 2500 DenaliBlack 2021 GMC Sierra 2500 DenaliBlack 2021 GMC Sierra 2500 DenaliBlack 2021 GMC Sierra 2500 Denali

    $58,944

    51,425 mi.
    Est. $1,097/mo

    Alpine Buick GMC

    4.4
    Check Availability
    Littleton, CO (10 mi)
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  • Summit White 2021 GMC Sierra 2500 DenaliSummit White 2021 GMC Sierra 2500 DenaliSummit White 2021 GMC Sierra 2500 DenaliSummit White 2021 GMC Sierra 2500 DenaliSummit White 2021 GMC Sierra 2500 DenaliSummit White 2021 GMC Sierra 2500 Denali

    $57,988

    60,239 mi.
    Est. $1,079/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (13 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLE

    $34,998

    78,205 mi.
    Est. $651/mo

    Berkenkotter Motors Parker

    4.7
    Check Availability
    Parker, CO (23 mi)
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  • White Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 DenaliWhite Frost Tri-Coat 2021 GMC Sierra 2500 Denali

    $57,888

    $1.6K
    41,169 mi.
    Est. $1,077/mo

    Alpine Chevrolet

    4.5
    Check Availability
    Aurora, CO (13 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $34,999

    97,493 mi.
    Est. $651/mo

    Red's Auto & Truck

    4.0
    Check Availability
    Longmont, CO (27 mi)
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  • Black 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLE

    $36,343

    87,466 mi.
    Est. $676/mo

    Auto Mart USA

    Check Availability
    Aurora, CO (11 mi)
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  • White 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 Denali

    $55,599

    72,587 mi.
    Est. $1,035/mo

    Rocky Mountain Eurosport Parker

    4.8
    Check Availability
    Parker, CO (23 mi)
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  • Not Priced

    78,806 mi.

    Christopher's Dodge Ram

    3.3
    Check Availability
    Golden, CO (8 mi)
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  • White 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 DenaliWhite 2021 GMC Sierra 2500 Denali

    $54,998

    92,464 mi.
    Est. $1,023/mo

    CarMax Baton Rouge

    Check Availability
    $799 delivery to Federal Heights, CO (8 mi)
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  • Onyx Black 2021 GMC Sierra 2500 DenaliOnyx Black 2021 GMC Sierra 2500 DenaliOnyx Black 2021 GMC Sierra 2500 DenaliOnyx Black 2021 GMC Sierra 2500 DenaliOnyx Black 2021 GMC Sierra 2500 DenaliOnyx Black 2021 GMC Sierra 2500 Denali

    $49,995

    107,468 mi.
    Est. $930/mo

    Laura Buick GMC

    4.5
    Check Availability
    $1,615 delivery from Collinsville, IL (808 mi)
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  • White 2021 GMC Sierra 2500 SLTWhite 2021 GMC Sierra 2500 SLTWhite 2021 GMC Sierra 2500 SLTWhite 2021 GMC Sierra 2500 SLTWhite 2021 GMC Sierra 2500 SLTWhite 2021 GMC Sierra 2500 SLT

    $51,292

    $299
    54,504 mi.
    Est. $954/mo

    Weld County Garage GMC Hummer

    4.5
    Check Availability
    Greeley, CO (46 mi)
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  • Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4Onyx Black 2021 GMC Sierra 2500 AT4

    $49,500

    $500
    48,642 mi.
    Est. $921/mo

    AutoSavvy Windsor

    4.4
    Check Availability
    Windsor, CO (45 mi)
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  • Summit White 2021 GMC Sierra 2500 AT4Summit White 2021 GMC Sierra 2500 AT4Summit White 2021 GMC Sierra 2500 AT4Summit White 2021 GMC Sierra 2500 AT4Summit White 2021 GMC Sierra 2500 AT4Summit White 2021 GMC Sierra 2500 AT4

    $44,995

    124,346 mi.
    Est. $837/mo

    McCloskey Motors Inc.

    1.9
    Check Availability
    Colorado Springs, CO (62 mi)
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  • $39,000

    69,870 mi.
    Est. $726/mo

    Corwin Toyota Colorado Springs

    4.5
    Check Availability
    Colorado Springs, CO (61 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 $80,122 1 Good deal
2025 GMC Sierra 2500 $74,771 5 Good deals
2024 GMC Sierra 2500 $66,528 7 Great deals
2022 GMC Sierra 2500 $50,508 5 Great deals
2019 GMC Sierra 2500 $39,192 4 Good deals

About the 2021 GMC Sierra 2500

Basics

Base shown (base trim).

Seating
3
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 2500
FAQs

How much does the 2021 GMC Sierra 2500 cost?

The 2021 GMC Sierra 2500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 2500 is $52,160, with pricing starting at $22,900.

Is the 2021 GMC Sierra 2500 reliable?

The 2021 GMC Sierra 2500 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 2500 owners.

Is the 2021 GMC Sierra 2500 a good truck?

Below are the Cars.com consumer ratings for the 2021 GMC Sierra 2500.

(29 reviews)
Rating breakdown (out of 5):
Comfort
4.7
Interior
4.6
Performance
4.3
Value
3.9
Exterior
4.6
Reliability
4.0
Ratings (29 reviews)

75% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.7
Interior
4.6
Performance
4.3
Value
3.9
Exterior
4.6
Reliability
4.0
Trims

AT4 (2 styles)

Style
4WD Crew Cab 172" AT4 4WD Crew Cab 159" AT4
Inventory price
Starting at $59,300 Starting at $59,100
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 (10 styles)

Style
4WD Crew Cab 159" 2WD Crew Cab 172" 4WD Crew Cab 172" 2WD Crew Cab 159" 2WD Double Cab 162" 4WD Double Cab 162" 4WD Double Cab 149" 2WD Double Cab 149" 2WD Reg Cab 142" 4WD Reg Cab 142"
Inventory price
Starting at $43,400 Starting at $40,800 Starting at $43,600 Starting at $40,600 Starting at $39,000 Starting at $41,800 Starting at $41,600 Starting at $38,800 Starting at $36,200 Starting at $39,000
Combined MPG
0 0 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) 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 172" Denali 4WD Crew Cab 159" Denali
Inventory price
Starting at $65,700 Starting at $65,500
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 (10 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 2WD Crew Cab 172" SLE 4WD Crew Cab 159" SLE 2WD Crew Cab 159" SLE 4WD Crew Cab 172" SLE 2WD Double Cab 162" SLE 2WD Double Cab 149" SLE 4WD Double Cab 149" SLE 4WD Double Cab 162" SLE
Inventory price
Starting at $44,400 Starting at $41,600 Starting at $45,600 Starting at $48,200 Starting at $45,400 Starting at $48,400 Starting at $43,800 Starting at $43,600 Starting at $46,400 Starting at $46,600
Combined MPG
0 0 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) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

SLT (8 styles)

Style
4WD Double Cab 162" SLT 2WD Double Cab 149" SLT 2WD Double Cab 162" SLT 4WD Double Cab 149" SLT 4WD Crew Cab 159" SLT 2WD Crew Cab 159" SLT 2WD Crew Cab 172" SLT 4WD Crew Cab 172" SLT
Inventory price
Starting at $54,600 Starting at $51,600 Starting at $51,800 Starting at $54,400 Starting at $56,200 Starting at $53,400 Starting at $53,600 Starting at $56,400
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)
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