2020 GMC Sierra 1500

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Change year or car

$29,600

starting MSRP

Key specs

Base trim shown

Pickup Truck

Body style

17

Combined MPG

3

Seating capacity

231.72” x 75.6”

Dimensions

Rear-wheel drive

Drivetrain

Overview

6 trims

Starting msrp listed lowest to highest price

Wondering which trim is right for you?

Our 2020 GMC Sierra 1500 trim comparison will help you decide.

See also: Find the best Pickup Trucks for 2024

2020 GMC Sierra 1500 review: Our expert's take

There are minor updates and changes coming for the 2020 GMC Sierra 1500 full-size pickup truck, designed to expand the brand’s available technology to more trims. On the powertrain front, the big news is the expansion of the 10-speed automatic transmission’s availability — it’s now paired with the 5.3-liter V-8 engine as standard equipment on the Sierra AT4 and Denali, and will be included on SLE trims and above as long as four-wheel drive is also selected. Previously, you could only get the 10-speed when you ordered the top 6.2-liter V-8. If you don’t get four-wheel drive, your 5.3-liter V-8-equipped truck will still feature the eight-speed automatic transmission. GMC is also adding turbo-diesel 3.0-liter Duramax inline six-cylinder availability to the CarbonPro Edition trucks; previously, you could only get the CarbonPro with the 6.2-liter V-8.

Technology-wise, the 2020 Sierra 1500 SLT, AT4 and Denali will get available adaptive cruise control that will be able to bring the Sierra to a full stop when engaged. But the real news is the arrival of the enhanced ProGrade Trailering system, which brings 15 different available camera views to the multimedia system, including the industry-first “transparent trailer” view that essentially makes anything you’re towing disappear. The system was first shown on the soon-to-be-launched 2020 Sierra 2500/3500, which we should see later this summer.

GMC is also filtering a lot of the trailer control functions down from the new heavy-duty pickups as well. The in-vehicle Trailering App in the multimedia system will allow owners to create and edit trailer profiles through the myGMC mobile device app and upload them directly to the truck, saving time on hooking up new trailers for the first time. The trailer profiles are also shareable now, so they can be sent to other trucks with the capability. The app also will send notifications for maintenance and trailer mileage. The in-Command Control System app, available through a mobile device or through the truck’s multimedia system running Apple CarPlay or Android Auto, allows even more control over the trailer itself — enabling a user to potentially activate trailer systems like air conditioning or water heaters, check holding tank levels or monitor generator fuel tank levels from the comfort of the Sierra’s cab.

Cosmetically, not much changes for 2020 except for an appearance update for CarbonPro Editions of the Sierra AT4 off-road pickup. In addition to the unique carbon fiber bed, the Sierra AT4 CarbonPro Edition will get a new black chrome grille surround, black exhaust tips and modified badges. It will be available only in Onyx Black, Summit White, Satin Steel Metallic and Carbon Black Metallic colors. Also, the Elevation trim level (the monochromatic one that slots between the SLE and SLT) can now be had as a crew-cab model instead of just the double dab that was offered for 2019, and the Sierra’s optional trailer tow mirrors have been redesigned.

The new 2020 GMC Sierra goes on sale in August.

Consumer reviews

Rating breakdown (out of 5):
  • Comfort 4.9
  • Interior 4.8
  • Performance 4.8
  • Value 4.7
  • Exterior 4.9
  • Reliability 4.8

Most recent consumer reviews

5.0

Great truck!

I bought my 2020 with 36k miles a couple of years ago and I now have 60k miles of trouble free very enjoyable driving. It was expensive, but worth every penny. The ride is so quiet and comfortable my wife and I prefer traveling in it instead of our 2018 Acura MDX which we also love. The 5.3 V8 has plenty of power and towing ability. The multi-function tail gate is genius, I hope to never be without one again. We so enjoy all the bells and whistles, especially the wireless phone charger. So glad I bought this truck!

5.0

2020 GMC 1500

I bought it at Brotherton Cadillac GMC in Renton Wa, Aman was a good salesman would buy again from there again and Brandee in finance was great!

4.0

Short turn radius

I purchased pre-owned 2020 1500 SLT in February of this year. The truck rides comfortable and has plenty of room front and rear. My and I both enjoy it. My only drawback is the turn radius (lock to lock). It lacks compared to my wife's 2018 Yukon SLT, or the 2016 Ram I traded in. Have to many times maneuver twice to park it going forward or reverse. Otherwise happy with our purchase.

See all 68 consumer reviews

Safety

Based on the 2020 GMC Sierra 1500 base trim.
Combined side rating front seat
5
Frontal barrier crash rating driver
5
Frontal barrier crash rating passenger
4
Overall frontal barrier crash rating
4
Overall rating
4
Overall side crash rating
5
Rollover rating
4
Side barrier rating
5
Side barrier rating driver
5
Side pole rating driver front seat
5

Warranty

New car and Certified Pre-Owned programs by GMC
New car program benefits
Bumper-to-bumper
36 months/36,000 miles
Corrosion
36 months/36,000 miles
Powertrain
60 months/60,000 miles
Roadside assistance
60 months/60,000 miles
Certified Pre-Owned program benefits
Maximum age/mileage
5 model years or newer/up to 75,000 miles
Basic warranty terms
12 months/12,000 miles bumper-to-bumper original warranty, then may continue to 6 years/100,000 miles limited (depending on variables)
Powertrain
6 years/100,000 miles
Dealer certification required
172-point inspection
Roadside assistance
Yes
View all cpo program details

Have questions about warranties or CPO programs?

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