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  • Summit White 2021 GMC Sierra 3500 AT4Summit White 2021 GMC Sierra 3500 AT4Summit White 2021 GMC Sierra 3500 AT4

    $47,962

    95,739 mi.
    Est. $902/mo

    Heller Ford

    4.5
    Check Availability
    $399 delivery from El Paso, IL (105 mi)
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  • Silver 2021 GMC Sierra 3500 DenaliSilver 2021 GMC Sierra 3500 DenaliSilver 2021 GMC Sierra 3500 DenaliSilver 2021 GMC Sierra 3500 DenaliSilver 2021 GMC Sierra 3500 DenaliSilver 2021 GMC Sierra 3500 Denali

    $65,998

    36,042 mi.
    Est. $1,241/mo

    CarMax Wilmington

    Check Availability
    $399 delivery to Oak Lawn, IL (11 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

    $59,995

    54,003 mi.
    Est. $1,128/mo

    Unlimited Motors

    4.7
    Check Availability
    Elwood, IN (146 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

    $54,444

    $444
    60,979 mi.
    Est. $1,023/mo

    Huntley Ford

    4.3
    Check Availability
    Huntley, IL (44 mi)
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  • Summit White 2021 GMC Sierra 3500 AT4Summit White 2021 GMC Sierra 3500 AT4Summit White 2021 GMC Sierra 3500 AT4

    $47,962

    95,739 mi.
    Est. $902/mo

    Heller Ford

    4.5
    Check Availability
    El Paso, IL (105 mi)
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  • Summit White 2021 GMC Sierra 3500 BaseSummit White 2021 GMC Sierra 3500 BaseSummit White 2021 GMC Sierra 3500 BaseSummit White 2021 GMC Sierra 3500 BaseSummit White 2021 GMC Sierra 3500 BaseSummit White 2021 GMC Sierra 3500 Base

    $38,995

    $1K
    68,368 mi.
    Est. $733/mo

    Leman's Chevy City

    4.4
    Check Availability
    Bloomington, IL (118 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 $80,346 1 Good deal

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 $52,801, with pricing starting at $23,999.

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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