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2020 GMC Sierra 3500

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GMC Sierra 3500 highlights

Customer rating

(not yet rated)

Mileage (EPA estimate)

(data not available)

Pricing for current inventory

(no current inventory)

Price
Year
Mileage

All GMC Sierra 3500 years

What is new for the 2020 GMC Sierra 3500?

  • The Sierra 3500 is available in a new trim called the AT4.
  • Sierra 3500 trims have been upgraded with Rear Seat Heaters, Blind Spot Monitor, Smart Key, and 20 Inch Plus Wheels as standard equipment this year.
  • The Denali trim now comes with Dual Rear Wheels as standard equipment.
  • The SLE trim now comes with Dual Rear Wheels as standard equipment.
  • The SLT trim now comes with Heated Steering Wheel and Dual Rear Wheels as standard equipment.

2020 GMC Sierra 3500 trims

Curious how GMC Sierra 3500 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities

Base:

  • 6.6L
  • 401-hp, 464-lb-ft of torque 6.6L
  • 445-hp, 910-lb-ft of torque 6.6L
  • Traction Control
  • Vinyl Seats
  • Automatic Transmission
  • Bluetooth Technology
  • Apple CarPlay
  • Android Auto
  • 4WD/AWD
  • Side Airbags
  • View our GMC Sierra 3500 inventory

SLE:

SLT:

  • Includes all features available on the SLE
  • Memory Seats
  • Front Seat Heaters
  • Power Seats
  • Leather Seats
  • Remote Start
  • Smart Key
  • Heated Steering Wheel
  • Rear Defroster

AT4:

Denali:

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Ratings & reliability

Customer ratings

The 2020 GMC Sierra 3500 is not yet rated. Help future customers learn about a car you've owned and write a review.

3
Average

RepairPal gave the GMC Sierra 3500 an overall reliability rating of 3 out of 5 stars, which RepairPal describes as Average. This rating ranks GMC Sierra 3500 14th out of 19 among Fullsize Trucks.

View RepairPal's full rating of the GMC Sierra 3500

GMC Sierra 3500 features and specs

Base 2WD 2D Regular Cab

Standard Features

  • ABS Brakes
  • Air Conditioning
  • AM/FM Stereo
  • Android Auto
  • Apple CarPlay
  • Automatic Transmission
  • Auxiliary Audio Input
  • Bluetooth Technology
  • Dual Rear Wheels
  • Long Bed
  • Overhead Airbags
  • Power Windows
  • Rear View Camera
  • Side Airbags
  • Tow Hitch
  • Traction Control
  • Vinyl Seats
  • Alloy Wheels
  • Bed Cover
  • Bed Liner
  • Blind Spot Monitor
  • Cloth Seats
  • Cruise Control
  • Dual Rear Wheels
  • Fifth Wheel Tow Hitch
  • Flex Fuel Vehicle
  • Gooseneck Tow Hitch
  • Lane Departure Warning
  • Long Bed
  • Navigation System
  • Parking Sensors
  • Power Locks
  • Power Mirrors
  • Rear Defroster
  • Rear View Camera
  • Running Boards
  • Smart Key
  • Tow Hitch

Drive Wheels

Rear Wheel Drive (2WD)

Engine size

6.6L

Horsepower

401

Torque (ft-lbs)

464

Engine type

Gas

Fuel capacity

36

Wheelbase

141.55"

Overall length

235.5"

Width

81.75"

Height

80.94"

Leg room

F 44.53"

Head room

F 43.11"

Front tires

LT275/70R18

Rear tires

LT275/70R18

Seating capacity

3

Max towing capacity

1450/20000 lbs.

Transmission

Automatic

2020 GMC Sierra 3500 FAQ

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