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  • Summit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLE

    $35,697

    $501
    86,708 mi.
    Est. $634/mo

    Pryor Chevrolet Gmc

    4.7
    Check Availability
    Pryor, OK (566 mi)

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  • White 2020 GMC Sierra 3500 SLEWhite 2020 GMC Sierra 3500 SLEWhite 2020 GMC Sierra 3500 SLEWhite 2020 GMC Sierra 3500 SLEWhite 2020 GMC Sierra 3500 SLEWhite 2020 GMC Sierra 3500 SLE

    $39,993

    97,869 mi.
    Est. $710/mo

    Premiere Auto Sales

    Check Availability
    Washington, PA (404 mi)
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  • Summit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLESummit White 2020 GMC Sierra 3500 SLE

    $47,697

    $500
    49,672 mi.
    Est. $847/mo

    Northwest Chevrolet of Bellingham

    4.6
    Check Availability
    Bellingham, WA (1,743 mi)
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  • Not Priced

    63,883 mi.
    Est. $0/mo

    Murdock GM

    4.4
    Check Availability
    Logan, UT (1,242 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 SLE 2 Good deals
2024 GMC Sierra 3500 SLE $54,497 16 Great deals
2023 GMC Sierra 3500 SLE $46,738 12 Good deals
2022 GMC Sierra 3500 SLE $45,726 11 Good deals

About the 2020 GMC Sierra 3500 SLE

Basics

SLE shown.

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 2020 GMC Sierra 3500 SLE
FAQs

How much does the 2020 GMC Sierra 3500 SLE cost?

The 2020 GMC Sierra 3500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 3500 SLE is $41,129, with pricing starting at $35,697.

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

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


Is the 2020 GMC Sierra 3500 SLE 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.

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

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)
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GMC Sierra 3500 trims