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  • Quicksilver Metallic 2020 GMC Sierra 3500 SLTQuicksilver Metallic 2020 GMC Sierra 3500 SLTQuicksilver Metallic 2020 GMC Sierra 3500 SLTQuicksilver Metallic 2020 GMC Sierra 3500 SLTQuicksilver Metallic 2020 GMC Sierra 3500 SLTQuicksilver Metallic 2020 GMC Sierra 3500 SLT

    $59,900

    57,991 mi.
    Est. $1,052/mo

    Rollit Motors

    4.5
    Check Availability
    Mesa, AZ (21 mi)
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  • White 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 Denali

    $57,995

    71,914 mi.
    Est. $1,019/mo

    AZ Auto Gallery of Mesa

    Check Availability
    Mesa, AZ (26 mi)
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  • Summit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 Denali

    $77,237

    50,019 mi.
    Est. $1,357/mo

    Lifted Trucks - Glendale

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    Glendale, AZ (9 mi)
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  • Summit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 Denali

    $67,990

    53,175 mi.
    Est. $1,195/mo

    Lifted Trucks - Phoenix

    2.4
    Check Availability
    Phoenix, AZ (7 mi)
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  • Black 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 Denali

    $58,998

    49,149 mi.
    Est. $1,037/mo

    CarMax Tulsa

    4.6
    Check Availability
    $549 delivery to Tolleson, AZ (13 mi)
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  • Black 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 Denali

    $38,923

    204,420 mi.
    Est. $684/mo

    Kissner Motors

    Check Availability
    $600 delivery from Grand Junction, CO (429 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 Denali

    $52,659

    77,029 mi.
    Est. $925/mo

    Ken Garff West Valley Chrysler Jeep Dodge Ram Fiat

    4.3
    Check Availability
    West Valley City, UT (493 mi)
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  • Black 2020 GMC Sierra 3500 AT4Black 2020 GMC Sierra 3500 AT4Black 2020 GMC Sierra 3500 AT4Black 2020 GMC Sierra 3500 AT4Black 2020 GMC Sierra 3500 AT4Black 2020 GMC Sierra 3500 AT4

    $46,136

    $1K
    125,528 mi.
    Est. $811/mo

    Larry H. Miller Ford Draper

    4.1
    Check Availability
    Draper, UT (483 mi)
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  • Onyx Black 2020 GMC Sierra 3500 AT4Onyx Black 2020 GMC Sierra 3500 AT4Onyx Black 2020 GMC Sierra 3500 AT4Onyx Black 2020 GMC Sierra 3500 AT4Onyx Black 2020 GMC Sierra 3500 AT4Onyx Black 2020 GMC Sierra 3500 AT4

    $44,429

    119,635 mi.
    Est. $781/mo

    Jerry Seiner South Jordan GMC

    4.0
    Check Availability
    South Jordan, UT (484 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 3500 Denali

    $57,900

    69,096 mi.
    Est. $1,017/mo

    Octane GMC of Santa Fe

    3.3
    Check Availability
    Santa Fe, NM (377 mi)
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  • Carbon Black Metallic 2020 GMC Sierra 3500 AT4Carbon Black Metallic 2020 GMC Sierra 3500 AT4Carbon Black Metallic 2020 GMC Sierra 3500 AT4Carbon Black Metallic 2020 GMC Sierra 3500 AT4

    Not Priced

    107,075 mi.
    Est. $0/mo

    Paradise Chevrolet

    4.4
    Check Availability
    Ventura, CA (411 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 $79,860 1 Good deal
2024 GMC Sierra 3500 $81,171 1 Good deal

About the 2020 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 2020 GMC Sierra 3500
FAQs

How much does the 2020 GMC Sierra 3500 cost?

The 2020 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 2020 Sierra 3500 is $52,021, with pricing starting at $15,479.

What are some similar vehicles and competitors of the 2020 GMC Sierra 3500?

The 2020 GMC Sierra 3500 compares to and/or competes against the following vehicles:


  • RAM 3500
  • GMC Sierra 2500
  • GMC Sierra 1500 Hybrid
  • Chevrolet Silverado 3500
  • Chevrolet Silverado 2500

Is the 2020 GMC Sierra 3500 reliable?

The 2020 GMC Sierra 3500 has an average reliability rating of 4.9 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 3500 owners.

Is the 2020 GMC Sierra 3500 a good truck?

Below are the Cars.com consumer ratings for the 2020 GMC Sierra 3500.

(9 reviews)
Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
4.9
Value
4.7
Exterior
5.0
Reliability
4.9
Ratings (9 reviews)

100% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
4.9
Value
4.7
Exterior
5.0
Reliability
4.9
Trims

AT4 (2 styles)

Style
4WD Crew Cab 159" AT4 4WD Crew Cab 172" AT4
Inventory price
Starting at $59,500 Starting at $59,700
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 159" 2WD Crew Cab 172" 2WD Crew Cab 159" 4WD Crew Cab 172" 2WD Reg Cab 142" 4WD Reg Cab 142"
Inventory price
Starting at $39,800 Starting at $42,600 Starting at $44,200 Starting at $41,600 Starting at $41,400 Starting at $44,400 Starting at $37,000 Starting at $39,800
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)

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 (8 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 4WD Double Cab 162" SLE 2WD Double Cab 162" SLE 4WD Crew Cab 172" SLE 2WD Crew Cab 172" SLE 4WD Crew Cab 159" SLE 2WD Crew Cab 159" SLE
Inventory price
Starting at $44,400 Starting at $41,600 Starting at $46,600 Starting at $43,800 Starting at $48,400 Starting at $45,600 Starting at $48,200 Starting at $45,400
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)

SLT (4 styles)

Style
2WD Crew Cab 172" SLT 4WD Crew Cab 172" SLT 4WD Crew Cab 159" SLT 2WD Crew Cab 159" SLT
Inventory price
Starting at $54,200 Starting at $57,000 Starting at $56,800 Starting at $54,000
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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