We focused on the premium Denali and rugged AT4 trims in this first drive review from Wyoming, but 2020 Sierra HD lineup is new across the board. From entry-level SLT and range-topping Denali to the 3500HD dually, here’s what’s new and what you need to know about GMC’s completely redesigned heavy haulers:
1 – New Trailering System
With 15 cameras including a segment-first transparent trailer view to virtually see through a trailer in tow, the ProGrade Trailering system is signifcantly enhanced for 2020.
According to GMC, “trailering is the most important consideration for Sierra Heavy Duty customers.” And we’re not surprised. The package comes with in-vehicle Trailering App with Trailer Light Test, Trailer Electrical Diagnostics, Trailer Tire Pressure and Temperature Monitoring, Pre- Maintenance Reminders and Departure Checklist.
2- New Trailering Technology
Staying on the trailering theme, the iN-Command control system essentially takes the features from a smart home and brings them into a heavy-duty truck, serving as a central hub of operations to monitor and control an array of systems in trailers equipped with the next-generation technology. So things like turning on the trailer’s air conditioning or water heater, are now possible.
3 – Massive HUD in the cockpit
This is one of those things HD trucks should have included years ago. Well, GMC is the first to do it, adding a 15-inch diagonal head-up display driver front and centre, relaying info including trailering metrics, vehicle speed, navigation information and an inclinometer display for the road grade.
4 – Rear Camera Mirror
The rearview mirror becomes a rearview screen, also a segment-first.
5 – Crazy tailgate
Another one of those ‘why didn’t they do it sooner’ features, the MultiPro is the world’s first six-function tailgate and offered on all Sierra trim levels. Configuring into various setups depending on needs, this crazy tailgate allows for easier loading, unloading and bed access. And will undoubtablely level-up your tailgate party.
Building on the redesigned Sierra 1500 released last year, for 2020 the ligh-duty pickup ramps it up with more technology & convenience features.
6 – Big design and big cargo
For 2020, expect the redesigned Sierra HD to be bigger than the 2019 model. It’s built on a new architecture with larger proportions, hence, more cargo space and improved cabin environment for passengers both front and back. Specifically,
- Longer wheelbase
- Taller height with bolder hood line with functional hood scoop
- Larger grille
- One-inch-lower bed lift-in height compared to the 2019 Sierra Heavy Duty
7 – Crew Cab increases headroom and legroom
GMC is touting their Crew Cab models to offer best-in-class front head- and legroom. So these big trucks can yank and haul but are equally as accommodating for passengers. And that’s a good thing.
8 – New 10-speed transmission
The 6.6L Duramax turbo diesel now gets an all-new Allison 10-speed automatic tranny – a first in the heavy-duty truck market.
9 – AT4 for HD buyers
Already discussed above but worth mentioning again, the Sierra AT4 Heavy-Duty is a new offering in the lineup; available for Crew Cab configurations as both a 2500 and 3500 single rear wheel offering.
10 – New cargo bed side steps
Located in front of the rear wheel openings making it easier to access the box cargo area, all 2020 Sierra HDs in all box styles get segment-exclusive cargo bed side steps. Best part? They don’t look ugly as we first expected.