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2020 GMC Sierra 1500

Research, photos, specs, and expertise

GMC Sierra 1500 highlights

Customer reviews

4.5 out of 5

RepairPal reliability rating

4 out of 5

Mileage (EPA estimate)

Pricing for current inventory

(no current inventory)

Distance from

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

New this year

  • Kicker Speaker System features are now available as options on select trims.
  • The Elevation trim now comes with Turbo Diesel Engine as standard equipment.
  • The SLT trim now comes with 4WD/AWD as standard equipment.

Explore GMC Sierra 1500 details

Base 2WD 2D Regular Cab

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 model years.

RAM gave its full-size 1500 pickup a makeover for model year 2019, adding a mild hybrid system to the mix. A giant 12-inch touchscreen display was added in the redesign with updated technology to spare. If you're interested in the RAM 1500, model years 2017-2021 will come with amenities like these:

  • Air conditioning

  • Cruise control

  • Six-speaker sound system

Ratings & reliability

Customer ratings

4.5 out of 5

6 customer reviews
5 Stars5
4 Stars0
3 Stars0
2 Stars1
1 Star0

RepairPal reliability rating

Above Average

RepairPal gave the GMC Sierra 1500 an overall reliability rating of 4 out of 5 stars, which RepairPal describes as Above Average. This rating ranks GMC Sierra 1500 6th out of 27 among Fullsize Trucks.

View RepairPal's full rating of the GMC Sierra 1500

2020 GMC Sierra 1500 trims


  • 2.7L
  • 5.3L
  • 285-hp, 305-lb-ft of torque 4.3L
  • 355-hp, 383-lb-ft of torque 5.3L
  • 310-hp, 348-lb-ft of torque 2.7L
  • Vinyl Seats
  • Traction Control
  • Side Airbags
  • Overhead Airbags
  • Automatic Transmission
  • Bluetooth Technology
  • Apple CarPlay
  • Android Auto
  • View all GMC Sierra 1500 Bases in stock


  • Includes all features available on the Base
  • 3.0L
  • 277-hp, 460-lb-ft of torque 3.0L
  • Power Mirrors
  • Cloth Seats
  • Cruise Control
  • Alloy Wheels
  • Turbo Diesel Engine
  • Power Locks
  • View all GMC Sierra 1500 SLEs in stock





More about 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.

Safety ratings

The 2020 GMC Sierra 1500 received an overall 4/5 by the National Highway Traffic Safety Administration (NHTSA). Certain vehicles may have unrepaired safety recalls. Click here to look up a specific vehicle.

* Price excludes taxes, title, registration, and fees. Applicable transfer fees are due in advance of vehicle delivery and are separate from sales transactions.
Unless otherwise noted, information related to these featured vehicles comes from third-party sources, including manufacturer information. Product and company names may be trademarks or registered trademarks of third-party entities. Use of them does not imply any affiliation with or endorsement by these entities.