The 2020 GMC Sierra 1500 receives several updates and changes. Notably, the 2020 model year represents the second model year of the fourth-generation Sierra, which entered the market for the 2019 model year.
| Assembly Location | GM Fort Wayne Assembly in Fort Wayne, Indiana, USA and GM Silao Plant in Mexico | |
| Body Style(s) | Light-Duty Pickup Trucks | |
| Layout | Front-Engined, Longitudinal | |
| Engine(s) | 2.7L L3B I4, 4.3L LV3 V6, 5.3L L82 V8, 5.3L L84 V8, 6.2L L87 V8, 3.0L LM2 I6 Duramax (Diesel) | |
| Transmission(s) | Allison 6-Speed Auto, 6-Speed Auto, 8-Speed Auto, 10-Speed Auto | |
| Drive Wheels | Rear-Wheel-Drive, Four-Wheel-Drive | |
| Availability | U.S.A., Canada, Mexico | |
| Predecessor | 2019 GMC Sierra 1500 | |
| Successor | 2021 GMC Sierra 1500 | |
Changes, Updates, New Features
Exterior
- Deletion of Chrome Appearance Package
- Deletion of one exterior color
- Addition of one exterior color
- Two new wheel options
- New Trailer Tow Mirrors
Interior
- New all-weather floor liners
- New Bed View Camera
Mechanical
- Revised 10-Speed Automatic Transmission Availability
- 2.7-Liter L3B Turbo Engine now available on base (1SA) models
Packages
- New Carbon Pro Edition availability and content
- New Sierra Value Package
- New Denali Ultimate Package content
- New Technology Package Content
- New Driver Alert Package II content
Safety
- New HD Surround Vision option with two Trailer View Camera provisions
- New Camera-Based Adaptive Cruise Control System
See detailed 2020 GMC Sierra 1500 changes, updates and new features here: 2020 GMC Sierra 1500 change log.
The updates and changes described here are specific to the U.S. market and may differ for other markets.
Body Styles
The 2020 GMC Sierra 1500 is available as a light-duty full-size pickup truck with several cab and bed configurations.
- Three Cabs:
- Regular Cab
- Double Cab
- Crew Cab
- Three Beds:
- Short Bed
- Standard Bed
- Long Bed
The cab and bed choices can be configured in the following configurations
- Crew Cab, Short Bed
- Crew Cab, Standard Bed
- Double Cab, Standard Bed
- Regular Cab, Standard Bed
- Regular Cab, Long Bed
We should note that each of the above body configurations is available with either a rear-wheel or four-wheel drivetrain assembly.
Additionally, all remaining 2020 GMC Sierra 1500 production was restricted to the crew cab body style in September. The restrictions are in effect until the end of the current 2020 model year, with production of the 2021 model year kicking off September 14th for double cab and crew cab models, and September 21st for regular cab models.
Powertrain
The 2020 GMC Sierra is offered with the following engine and transmission choices:
| Engine | Fuel | Aspiration | Transmission | Horsepower @ RPM | Torque @ RPM | Axle Ratio |
|---|---|---|---|---|---|---|
| 4.3L LV3 EcoTec3 V6 | Gasoline | Atmospheric | 6-speed automatic MYC | 285 @ 5300 | 305 @ 3900 | 3.42 |
| 2.7L L3B I4 | Gasoline | Turbocharged | 8-Speed Automatic (MQE) | 310 @ 5600 | 348 @ 1500-4000 | 3.42 |
| 5.3L L82 EcoTec3 V8 | Gasoline | Atmospheric | 6-Speed Automatic (MYC) | 355 @ 5600 | 383 @ 4100 | 3.42 |
| 5.3L L84 EcoTec3 V8 | Gasoline | Atmospheric | 2WD 8-Speed Automatic (MQE) / 4WD 10-Speed Automatic (MQB) | 355 @ 5600 | 383 @ 4100 | 3.42 |
| 6.2L L87 EcoTec3 V8 | Gasoline | Atmospheric | 10-Speed Automatic (MQB) | 420 @ 5600 | 460 @ 4100 | 3.23 |
| 3.0L LM2 Duramax I6 | Diesel | Turbocharged | 10-Speed Automatic (MQB) | 277 @ 3750 | 460 @ 1500 | 3.23 |
As stated, the 2020 Sierra 1500 continues to be offered in either rear-wheel or four-wheel drive configurations. Notably, Chevy made a parts change halfway through the 2020 model year, resulting in High Country 4WD models being equipped with the eight-speed automatic transmission rather than the newer ten-speed unit. To compensate for the older technology, GM is offering buyers a $200 credit.
Another noteworthy change is a $1,500 price reduction for Sierra 1500 Diesel models, which GMAuthority was the first to report. Effective September 3rd, 2020, the change in MSRP will also apply for in-stock and in-transit units of the 2020 GMC Sierra Diesel 1500.
Platform
The 2020 Sierra 1500 continues riding on the GM T1 platform, which also underpins the 2020 Sierra HD, 2020 Yukon, and other full-size GM trucks and SUVs.
Production
The 2019 Sierra 1500 was assembled at the GM Silao Assembly Plant in Silao, Mexico as well as the GM Fort Wayne Assembly Plant in Fort Wayne, Indiana, USA.
Availability
The 2020 Sierra 1500 became available at the end of Q2 2019.
Beyond 2020
We expect the fourth-generation Sierra 1500 to remain in production through the 2025 model year.
An all-new, next GMC Sierra 1500 will most likely launch after the 2025 model year.
Discussion
Discuss the 2020 GMC Sierra 1500 in our GMC forum.
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