The New, Lifted GMC Sierra AT4 Is A Truck To Get You Noticed

The new Sierra AT4 is an upgraded, higher-riding trailblazer with more optional tech and better engines, whether it’s for the school run or transporting a quad bike
The New, Lifted GMC Sierra AT4 Is A Truck To Get You Noticed

GMC has just launched its AT4 sub-brand with this, the new Sierra AT4. Fitted with a two-inch suspension lift and a locking rear differential, it’s a meaty, off-road inclined pickup that’s as much at home shifting a few motorbikes into the wilderness as it is doing the weekly shop.

It’s the first pickup to offer a carbonfibre load bay surface, albeit as an option, after we reported the switch a few months ago. The bed, sides and bulkhead will all be carbonfibre, while the inside surface of the tailgate sticks to a glass fibre composite. Whether steel or carbon, the front bulkhead has more tie-down hooks and three indents for motorbike wheels, making it easier to secure and stabilise bikes during loading.

The New, Lifted GMC Sierra AT4 Is A Truck To Get You Noticed

The AT4’s design is a dark affair. Black chrome and with touches of red add a little purpose to the style, while textured aluminium on the steering wheel and Kalahari colour accents on the seats mix things up a little. On the outside, 18-inch wheels with mud tyres are standard-fit, with 20s and less aggressive all-terrain rubber optional.

As far as the greasy bits go, the two-inch lift sits over several bash plates and a two-speed transfer case with a low-range option for crawling. There’s hill descent control, that locking rear diff and a selection of driving modes for different terrain. Rancho monotube shocks, tuned for off-road driving, control the bounce.

The New, Lifted GMC Sierra AT4 Is A Truck To Get You Noticed

A series of cameras gives a 360-degree surround view, while a ProGrade Trailering System with Trailering App makes it easier and safer to tow stuff.

Up front (and up high) is a 5.3-litre V8 used in other GMC trucks, pushing out 355bhp and 383lb ft. The two upgrades are, for efficiency, a 3.0-litre Duramax diesel or a 6.2-litre petrol V8 with 420bhp and 460lb ft. Both petrols have clever cylinder deactivation tech that can allow the AT4 to burble along on as little as one cylinder. A 10-speed automatic is standard with both upgraded motors.

The New, Lifted GMC Sierra AT4 Is A Truck To Get You Noticed

Optional extras on the AT4 span a rear-facing camera display in the rear-view mirror for safer reversing, blind spot warnings, autonomous emergency low-speed braking and lane-change warnings.

The Sierra AT4 goes on sale this autumn, with prices to be confirmed later in the year. Beefed-up AT4 versions of all GMC’s models will follow.




03/27/2018 - 12:28 |
0 | 4

These are 18s? What the hell, they look like shopping cart wheels on it.

03/27/2018 - 12:28 |
136 | 4

In reply to by Jakob

True but the ride quality is worse off with larger wheels…

03/27/2018 - 12:30 |
6 | 0

In reply to by Jakob

I’ve noticed that too! In the mid 2000s, those wheels will be GIANT

03/27/2018 - 12:41 |
0 | 0
BoostAddict 1

In reply to by Jakob

Found a real picture. Looks better, still not perfect.

03/27/2018 - 14:59 |
26 | 0
Ray Sloan

In reply to by Jakob

Oh man once you see it

03/27/2018 - 21:04 |
0 | 0
Wheel Nuts
03/27/2018 - 12:40 |
108 | 0
BoostAddict 1

Never skip leg day.

03/27/2018 - 12:44 |
58 | 0

came here to say it

03/27/2018 - 14:09 |
2 | 0
Michael Masin

It’s like someone’s put alloy castors on their piano

03/27/2018 - 12:47 |
6 | 0
BoostAddict 1

Chevy: Unlike some companies we build our beds out of steel because we couldn’t think of a better ad campaign
Ford (if they do what Chevy did): We make our beds out of metal, because metal is strong.

I honestly don’t think that they can build a carbon fiber bed strong enough and cheap enough for it to be worthwhile. Aluminum is a good compromise between strength and weight. Then again, this is designed to tow a camping trailer and be a commuter vehicle, not a truck.

03/27/2018 - 12:49 |
2 | 2

The funny thing about those ads was that Chevy was planning to switch to aluminum while they were airing

03/28/2018 - 21:19 |
0 | 0
Zoomer Slick

“Off-road inclined”

The only off-road incline this truck will ever see is the slight incline on the gravel driveway.

Honestly a pity. Such potential never going to be tested.

03/27/2018 - 13:17 |
6 | 0

Don’t worry, they’re a lot of truck guys like me waiting to put this thing through it’s paces🔥

03/28/2018 - 19:07 |
0 | 0
redflamexfire(R32 squad)

what’s with the wheels?

03/27/2018 - 13:35 |
4 | 0

Why don’t get an actual truck with this size? Because i would like to know what you need an inside space that big for :D

03/27/2018 - 15:00 |
0 | 0
BoostAddict 1

In reply to by 5:19.55

This is a 1/2 ton truck shaped car.

03/27/2018 - 20:14 |
0 | 0


03/27/2018 - 17:03 |
4 | 0



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