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 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.
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.
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.
Comments
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These are 18s? What the hell, they look like shopping cart wheels on it.
True but the ride quality is worse off with larger wheels…
I’ve noticed that too! In the mid 2000s, those wheels will be GIANT
Found a real picture. Looks better, still not perfect.
Oh man once you see it
Reminds me of this: https://m.youtube.com/watch?v=HPh90yNX-mY
Never skip leg day.
came here to say it
It’s like someone’s put alloy castors on their piano
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.
The funny thing about those ads was that Chevy was planning to switch to aluminum while they were airing
“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.
Don’t worry, they’re a lot of truck guys like me waiting to put this thing through it’s paces🔥
what’s with the wheels?
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
This is a 1/2 ton truck shaped car.
HONEY IVE SHRUNK THE RIMS