2020 GMC Sierra 1500 review

Research, photos, specs, and expertise
6 photos

GMC Sierra 1500 highlights

Customer rating


  • Large, functional bed
  • Many engine options
  • Lots of cabin space


  • Dated styling
  • Body roll on cornering
  • Steering isn't very responsive

Mileage (EPA estimate)

15 city, 20 highway, 17 combined

Pricing for current inventory

(no current inventory)

6 photos

A capable truck with loads of technology

The GMC Sierra 1500 was first introduced more than two decades ago and continues to innovate with the 2020 model. Updates include the addition of adaptive cruise control, an Enhanced ProGrade Trailering camera, expanded availability of the 10-speed automatic transmission, and more.

All GMC Sierra 1500 years

What is new for the 2020 GMC Sierra 1500?

  • Automated Cruise Control and Kicker Speaker System features are now available as options on select trims.
  • The SLT trim now comes with Cloth Seats as standard equipment.
  • The Base trim now comes with Turbo Charged Engine as standard equipment.

2020 GMC Sierra 1500 trims

Curious how GMC Sierra 1500 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities


  • 355-hp, 383-lb-ft of torque 5.3L
  • 285-hp, 305-lb-ft of torque 4.3L
  • 310-hp, 348-lb-ft of torque 2.7L
  • 5.3L
  • 2.7L
  • Vinyl Seats
  • Side Airbags
  • Overhead Airbags
  • Traction Control
  • Rear View Camera
  • 4WD/AWD
  • Automatic Transmission
  • Bluetooth Technology
  • View our GMC Sierra 1500 inventory




  • Includes all features available on the Elevation
  • 6.2L
  • Memory Seats
  • Front Seat Heaters
  • Power Seats
  • Leather Seats
  • Heated Steering Wheel
  • Tow Hitch
  • Satellite Radio Ready
  • View our GMC Sierra 1500 SLT inventory



GMC Sierra 1500 photos

5 reasons to buy the 2020 GMC Sierra 1500

1. Good looks

The 2020 GMC Sierra, with its muscular body panels, bold grille, and unique C-shaped headlight housings, provides an exciting ride that's as practical as it is stylish. The grade-topping Denali bundles big 20-inch alloy wheels, as well, making the 2020 GMC Sierra an undeniably good-looking ride.

2. Flexible storage

2020 GMC Sierra 1500: Trunk Cargo | CarMax

A GMC exclusive, the MultiPro tailgate (AT4 trim) does more than just keep things from sliding out of the bed. Among its six functions are an extension feature to fit longer items like surfboards, a flip-down outer door to allow easier access to bed contents, and the ability to act as a full-width step for easy ingress and egress. On the SLT trim and above, the ProGrade Trailering System provides a total of 15 camera views.

3. Well appointed

2020 GMC Sierra 1500: front seats | CarMax

The 2020 GMC Sierra is proof that a pickup can be as comfortable as it is practical. Optional on the SLT and standard on the ATR and above, the front occupants will enjoy heated and ventilated front seating, and the back seats heat up too. Similarly, the steering wheel in SLT and above trims has a hand-warming function.

2020 GMC Sierra 1500: Backseat | CarMax

4. Built-in entertainment

2020 GMC Sierra 1500: Tech Dash | CarMax

There's no excuse to be bored when you have some downtime in the 2020 GMC Sierra 1500, whether on the worksite or out camping. A seven-inch touchscreen display, powered by the GMC infotainment system, is standard equipment, but move up to an SLT or beyond, and the monitor grows to eight inches. New for 2020 is the available ability to stream SiriusXM satellite radio with a subscription.

5. An engine for everyone

2020 GMC Sierra 1500: Engine | CarMax

Boasting an impressive choice between four different engines and three different transmissions, there's a GMC Sierra 1500 for every buyer. Certain powertrains like the 3.0L motor mated to the efficient 10-speed automatic transmission yields an EPA-estimated 26 mpg combined.

Power hungry? The 6.2L V8 pumps out 420 horses.

Similar vehicles

If you're interested in the 2020 GMC Sierra 1500, you should also check out these similar vehicles from Previous generation years.

Image of RAM 1500

Rugged and versatile, the RAM 1500 is an all-around terrific full-size pickup truck. The RAM 1500 aims to please, whether you're seeking a vehicle to hold your crew or your family. For model years 2017–2019, the RAM 1500 is offered in two different cab configurations: the quad cab and crew cab. This truck is also available in two bed sizes: a standard six-foot-four-inch bed and a shorter, optional five-foot-seven-inch bed. A 3.6L V6 engine at 305 hp is standard across all trim levels, and a larger and more powerful 5.7L V8 is also optional. For model year 2019, these features are standard on the RAM 1500:

  • Five-inch touchscreen interface

  • Vinyl flooring and upholstery

  • Front and rear stabilizer bars

  • Folding rear bench seat

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Ratings & reliability

Customer ratings

Above Average

RepairPal gave the GMC Sierra 1500 an overall reliability rating of 3.5 out of 5 stars, which RepairPal describes as Above Average. This rating ranks GMC Sierra 1500 4th out of 19 among Fullsize Trucks.

View RepairPal's full rating of the GMC Sierra 1500

GMC Sierra 1500 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
  • Overhead Airbags
  • Power Windows
  • Rear View Camera
  • Side Airbags
  • Traction Control
  • Turbo Charged Engine
  • Vinyl Seats
  • Alloy Wheels
  • Bed Cover
  • Bed Liner
  • Blind Spot Monitor
  • Cloth Seats
  • Cruise Control
  • 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




Torque (ft-lbs)


Engine type

Turbo Gas

Fuel capacity




Overall length






Leg room

F 44.53"

Head room

F 43.11"

Front tires


Rear tires


Seating capacity


Max towing capacity

790/10000 lbs.



2020 GMC Sierra 1500 FAQ

More about the 2020 GMC Sierra 1500

Color options

  • Cardinal Red

  • Dark Sky Metallic

  • Onyx Black

  • Pacific Blue Metallic

  • Quicksilver Metallic

  • Satin Steel Metallic

  • Summit White

  • Tangier Orange

  • Wheatland Yellow

  • Woodland Green

Interior details

  • Cargo Space: Regular Cab has 72 or 98 cubic feet of cargo volume, Double Cab has 98 cubic feet, and Crew Cab has 63 or 72 cubic feet.

  • Seating Capacity: Regular Cab and Double Cab seat up to six people while Crew Cab seats up to three people.

  • Infotainment: A seven-inch touchscreen comes standard while SLT and above trims receive an eight-inch touchscreen and Apple CarPlay and Android Auto.

NHTSA Safety Ratings

The 2020 GMC Sierra 1500 received an overall 4/5 rating by the National Highway Traffic Safety Administration (NHTSA). Find out more about this rating and how NHTSA’s 5-Star Safety Ratings program evaluates the crash protection and rollover safety of new vehicles.

Keep in mind that certain vehicles may have unrepaired safety recalls. Click here to look up a specific vehicle.

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