2020
GMC Sierra 3500

Starts at:
$43,800
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New 2020 GMC Sierra 3500
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Safety rating
NHTSA tested vehicle score
Consumer rating
Owner reviewed vehicle score
Not rated
Safety rating
NHTSA tested vehicle score
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Available trims

See the differences side-by-side to compare trims.
  • 2WD Reg Cab 142"
    Starts at
    $37,000
    2
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,411 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Double Cab 162"
    Starts at
    $39,800
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,304 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Reg Cab 142"
    Starts at
    $39,800
    2
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,464 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 159"
    Starts at
    $41,400
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,534 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 172"
    Starts at
    $41,600
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,263 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Reg Cab 142" SLE
    Starts at
    $41,600
    3
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,411 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Double Cab 162"
    Starts at
    $42,600
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,321 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Double Cab 162" SLE
    Starts at
    $43,800
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,304 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 159"
    Starts at
    $44,200
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,584 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 172"
    Starts at
    $44,400
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,328 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Reg Cab 142" SLE
    Starts at
    $44,400
    3
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,464 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 159" SLE
    Starts at
    $45,400
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,534 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 172" SLE
    Starts at
    $45,600
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,263 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Double Cab 162" SLE
    Starts at
    $46,600
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,321 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 159" SLE
    Starts at
    $48,200
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,584 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 172" SLE
    Starts at
    $48,400
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,328 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 159" SLT
    Starts at
    $54,000
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,534 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 2WD Crew Cab 172" SLT
    Starts at
    $54,200
    5
    Seat capacity
    Gas V8
    Engine
    Rear Wheel Drive
    Drivetrain
    4,263 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 159" SLT
    Starts at
    $56,800
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,584 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 172" SLT
    Starts at
    $57,000
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,328 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 159" AT4
    Starts at
    $59,500
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,584 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 172" AT4
    Starts at
    $59,700
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,328 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 159" Denali
    Starts at
    $65,500
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,584 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs
  • 4WD Crew Cab 172" Denali
    Starts at
    $65,700
    5
    Seat capacity
    Gas V8
    Engine
    Four Wheel Drive
    Drivetrain
    4,328 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    See all specs

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2020 GMC Sierra 3500 2020 GMC Sierra 3500 2020 GMC Sierra 3500 2020 GMC Sierra 3500 2020 GMC Sierra 3500

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Factory warranties

New car program benefits

Basic
3 years / 36,000 miles
Corrosion
3 years / 36,000 miles
Powertrain
5 years / 60,000 miles
Roadside Assistance
5 years / 60,000 miles

Certified Pre-Owned program benefits

Age / mileage
5 model years or newer / up to 75,000 miles
Basic
12 months / 12,000 miles bumper-to-bumper original warranty, then may continue to 6 years / 100,000 miles limited (depending on variables)
Dealer certification
172-point inspection
See all CPO program details

Compare similar vehicles

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  • 2020
    4.9
    GMC Sierra 3500
    Starts at
    $37,000
    2020 GMC Sierra 3500
    2
    Seat capacity
    Gas V8
    Engine
    Rear-wheel drive
    Drivetrain
    4,304 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
    Compare
  • 2024
    2.5
    Chevrolet Silverado 3500
    Starts at
    $44,700
    2024 Chevrolet Silverado 3500
    2
    Seat capacity
    Gas V8
    Engine
    Rear-wheel drive
    Drivetrain
    4,590 lbs
    Payload Capacity
    20,000 lbs
    Towing Capacity
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  • 2020
    4.7
    GMC Sierra 2500
    Starts at
    $35,800
    2020 GMC Sierra 2500
    3
    Seat capacity
    Gas V8
    Engine
    Rear-wheel drive
    Drivetrain
    3,848 lbs
    Payload Capacity
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    Towing Capacity
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  • 2022
    4.0
    GMC Sierra 3500
    Starts at
    $41,400
    2022 GMC Sierra 3500
    2
    Seat capacity
    Gas V8
    Engine
    Rear-wheel drive
    Drivetrain
    4,328 lbs
    Payload Capacity
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    Towing Capacity
    Compare
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Consumer reviews

100% of drivers recommend this car
4.9 / 5
Based on 9 reviews
Write a review
Comfort 4.9
Interior 4.9
Performance 4.9
Value 4.7
Exterior 5.0
Reliability 4.9

Most recent

  • By Mahrad from Lady Lake, FL
    Owns this car
    January 30, 2023

    Great Diesel truck when emission sensors work

    Great vehicle for pulling my fifth wheel RV which weighs around 20,000 pounds. This dually truck pulls the RV very nicely without any significant strain on the engine or the transmission. However, like all of today's diesel engines there are 4 different system of emissions on this truck. Each one of these emission systems has sensors associated with them. If one of these sensors goes bad the truck will not perform optimally and sometimes it will go into the limp mode. Unfortunately this is not unique to GMC trucks. All manufacturers are battling this system. Also, I have had to take the truck to the dealer for computer upgrades in order to improve performance. I wish these upgrades could be performed on line (through wifi or with my own phone service). It sure would make things a lot simpler and improve the through put of the dealers who are already strained because of the limited number of available diesel mechanics.
    • Purchased a New car
    • Used for Having fun
    • Does recommend this car
    Comfort 5.0
    Interior 4.0
    Performance 4.0
    Value 4.0
    Exterior 5.0
    Reliability 4.0
    6 people out of 6 found this review helpful. Did you?
    Yes No
  • By Aflynn from Harriman TN
    Owns this car
    September 1, 2020

    Great car for work!!

    Comfort, ease of driving, style, convenient for work and we LOVE the tailgate! Great for towing our heavy fifth wheel and our dogs are riding in style!!
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 3.0
    Exterior 5.0
    Reliability 5.0
    5 people out of 6 found this review helpful. Did you?
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  • By Dr. G from Decatur, TX
    Owns this car
    August 4, 2020

    Great luxury ride with great pulling capabilities.

    The Texas Edition combined with the X31 package and premium SLT makes a very nice combination. The Sierra 3500HD gives you a luxury interior and ride with all the capabilities of a great pulling truck. The Duramax is quiet yet powerful. It is no doubt the best of trucks for 2020.
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    4 people out of 4 found this review helpful. Did you?
    Yes No
  • By Cp3angel
    Owns this car
    July 26, 2020

    Really impressed with the performance

    Nicest truck I have ever owned preforms great with my RV Truck is comfortable and still works great when you need it to preform. Ride is nice and very roomy for all that want to travel with me
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    2 people out of 2 found this review helpful. Did you?
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  • By Tree man from Franklin Ky
    Owns this car
    July 25, 2020

    Good power very comfortable ride

    Good power plenty of room the truck has all kind of new technology in it that helps with driving safety and with job performance Awesome
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    0 people out of 0 found this review helpful. Did you?
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  • By Charlie from Hudson, FL
    Owns this car
    June 2, 2020

    New GMC Sierra 3500

    Loving our new GMC Denali. Tows our travel trailer like a dream. Perfect choice for us. Look forward to many years with it. Thanks Ferman.
    • Purchased a New car
    • Used for Having fun
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    0 people out of 0 found this review helpful. Did you?
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  • By Brandon from Saraland Alabama
    Owns this car
    April 30, 2020

    As advertised

    This truck is just as GMC advertised, Professional Grade! Tons of room inside and plenty of power under the hood for all the towing you want to do.
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    0 people out of 0 found this review helpful. Did you?
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  • By Karenc from King George, VA
    Owns this car
    February 26, 2020

    Very Relaible

    Happy with purchase. Will be used to daily as a commute to work and home. Will be used when retired to travel the US and carry a 5th wheel.
    • Purchased a New car
    • Used for Commuting
    • Does recommend this car
    Comfort 4.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    1 person out of 1 found this review helpful. Did you?
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  • By MegaDQ from Portland, Or
    Owns this car
    February 19, 2020

    I love this truck!!!

    This truck is so comfortable. It’s like driving a luxury car with the power to tow whatever I need it to. I am very happy.
    • Purchased a New car
    • Used for Towing
    • Does recommend this car
    Comfort 5.0
    Interior 5.0
    Performance 5.0
    Value 5.0
    Exterior 5.0
    Reliability 5.0
    1 person out of 1 found this review helpful. Did you?
    Yes No
See all reviews

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GMC dealers near you

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FAQ

What trim levels are available for the 2020 GMC Sierra 3500?

The 2020 GMC Sierra 3500 is available in 5 trim levels:

  • (8 styles)
  • AT4 (2 styles)
  • Denali (2 styles)
  • SLE (8 styles)
  • SLT (4 styles)

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:

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 GMC Sierra 3500 owners.

Is the 2020 GMC Sierra 3500 a good Truck?

Below are the cars.com consumers ratings for the 2020 GMC Sierra 3500. 100.0% of drivers recommend this vehicle.

4.9 / 5
Based on 9 reviews
  • Comfort: 4.9
  • Interior: 4.9
  • Performance: 4.9
  • Value: 4.7
  • Exterior: 5.0
  • Reliability: 4.9

GMC Sierra 3500 history

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