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  • Red Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLE

    $40,975

    $414
    70,356 mi.
    Est. $772/mo

    Jim Schmidt Chevrolet

    4.3
    Hicksville, OH (154 mi)
    Check Availability
  • Pacific Blue Metallic 2020 GMC Sierra 2500 SLEPacific Blue Metallic 2020 GMC Sierra 2500 SLEPacific Blue Metallic 2020 GMC Sierra 2500 SLEPacific Blue Metallic 2020 GMC Sierra 2500 SLEPacific Blue Metallic 2020 GMC Sierra 2500 SLEPacific Blue Metallic 2020 GMC Sierra 2500 SLE

    $41,167

    74,222 mi.
    Est. $776/mo

    H&K Chevrolet, Inc.

    4.2
    Continental, OH (183 mi)
    Check Availability
  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $32,349

    $659
    115,775 mi.
    Est. $609/mo

    Tom Kadlec Honda

    4.4
    Rochester, MN (288 mi)
    Check Availability
  • 2020 GMC Sierra 2500 SLE2020 GMC Sierra 2500 SLE2020 GMC Sierra 2500 SLE2020 GMC Sierra 2500 SLE2020 GMC Sierra 2500 SLE2020 GMC Sierra 2500 SLE

    $35,090

    97,161 mi.
    Est. $661/mo

    RPmotors

    Livingston, MT (1,170 mi)
    Check Availability
  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $41,990

    $1K
    59,211 mi.
    Est. $791/mo

    Koehne Chevrolet

    Marinette, WI (220 mi)
  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $29,535

    231,551 mi.
    Est. $556/mo

    Jason Lewis Knoxville Supercenter

    Knoxville, TN (455 mi)
    Check Availability
  • Cardinal Red 2020 GMC Sierra 2500 SLECardinal Red 2020 GMC Sierra 2500 SLECardinal Red 2020 GMC Sierra 2500 SLECardinal Red 2020 GMC Sierra 2500 SLECardinal Red 2020 GMC Sierra 2500 SLECardinal Red 2020 GMC Sierra 2500 SLE

    Not Priced

    179,435 mi.
    Est. $0/mo

    West Metro Buick GMC

    5.0
    Monticello, MN (389 mi)
    Check Availability
  • $37,137

    91,248 mi.
    Est. $700/mo

    Larry H. Miller Chrysler Jeep Dodge RAM Boise

    4.3
    Boise, ID (1,451 mi)
    Check Availability

GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 SLE 8 Great deals
2025 GMC Sierra 2500 SLE $56,097 20 Great deals
2024 GMC Sierra 2500 SLE $47,566 38 Great deals
2023 GMC Sierra 2500 SLE $45,235 15 Great deals
2022 GMC Sierra 2500 SLE $40,299 30 Great deals
2021 GMC Sierra 2500 SLE $38,461 14 Great deals

About the 2020 GMC Sierra 2500 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 2500 SLE
FAQs

How much does the 2020 GMC Sierra 2500 SLE cost?

The 2020 GMC Sierra 2500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 2500 SLE is $36,042, with pricing starting at $29,535.

What are some similar vehicles and competitors of the 2020 GMC Sierra 2500 SLE?

The 2020 GMC Sierra 2500 SLE compares to and/or competes against the following vehicles:


Is the 2020 GMC Sierra 2500 SLE 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

SLE (10 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 2WD Crew Cab 172" SLE 2WD Crew Cab 159" SLE 4WD Double Cab 162" SLE 4WD Crew Cab 159" SLE 2WD Double Cab 162" SLE 4WD Double Cab 149" SLE 2WD Double Cab 149" SLE 4WD Crew Cab 172" SLE
Inventory price
Starting at $43,200 Starting at $40,400 Starting at $44,400 Starting at $44,200 Starting at $45,400 Starting at $47,000 Starting at $42,600 Starting at $45,200 Starting at $42,400 Starting at $47,200
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)

2020 GMC Sierra 2500 trims