GMC has pulled the covers off its latest special edition package for the Sierra 1500 pickup at the 2016 Houston Auto Show in Texas. Called the All Terrain X, the Sierra is built to further the capabilities of the current Sierra All Terrain thanks to additional equipment and looks that separate it from its brethren in the showroom.

This is certainly not the first special edition package we’ve seen on a General Motors truck, however, the first package in recent memory that adds horsepower. Yes, GM has listened to the pleas of consumers and journalist by adding a performance exhaust system. It bumps the 5.3-liter V-8’s horsepower from 355 to 365 – a 10 horsepower gain paired with a more aggressive exhaust rumble. It’s a welcomed addition, to say the least.

Horsepower isn’t the only attractive add-on here; a slew of off-road equipment including mud tires on trim-unique wheels, a roll bar with LED light bars, side step bars for easy access to the cab, and most importantly, the Z71 suspension package.

The GMC Sierra All Terrain X will go on sale in the Spring of 2016. GMC has yet to disclose its selling price.

Continue reading to learn more about the 2016 GMC Sierra All Terrain X.

  • Year:
  • Engine:
  • Transmission:
    six-speed automatic
  • Horsepower @ RPM:
  • Torque @ RPM:
  • Energy:
    Direct Injection
  • Displacement:
    5.3 L
  • 0-60 time:
    6.5 sec. (Est.)
  • Top Speed:
    99 mph
  • Layout:
    Front Engine, 4WD w/ Low Range
  • Price:
    50000 (Est.)
  • car segment:
  • body style:


2016 GMC Sierra 1500 All Terrain X - image 663435
2016 GMC Sierra 1500 All Terrain X - image 663436
2016 GMC Sierra 1500 All Terrain X - image 663433

Much of the All Terrain X package’s details is found here, on the outside. It starts with a bespoke grille with body-color surrounds and tinted chrome accents. Body-color bumpers are also present. Blacked-out 18-inch wheels come wrapped in 265/65-seres Goodyear Wrangler DuraTrac MT tires. GMC says the Goodyear tires do a good job of balancing off-road performance with on-road comfort, even mixed with some decent winter-weather traction.

"The All Terrain X package also includes several standard features that are otherwise optional."

Off-road-style side steps, like those found on other GM off-road trucks, help with entry and exit into the cab. Also familiar is the bed-mounted roll bar that GMC calls it a “Sports Bar.” Whatever you like to call it, the bar holds two LED light bars for nighttime trail driving.

The All Terrain X package also includes several standard features that are otherwise optional. These include the spray-in bedliner, high-performance LED headlights, Rear Park Assist, body-color door handles and body-side moldings, black exterior mirror caps, and black B-pillars.

Six color choices can be had on the All Terrain X. They include Onyx Black, Summit White, Stone Blue Metallic, Iridium Metallic, Crimson Red Tintcoat, and Light Steel Gray Metallic.


2016 GMC Sierra 1500 All Terrain X - image 663440

The Sierra All Terrain X doesn’t have many differences within its interior. In fact, only three main difference separate the All Terrain X from a regular Sierra SLT. They include an All Terrain-branded gauge cluster, a set of floor liners, and an inclinometer function in the menu section of the driver information screen.

Nevertheless, the Sierra still boasts an inviting cabin with plenty of space, storage spots, room for six, and a slew of technology. The Sierra SLT trim comes standard with a bench seat up front, but bucket seats are an option. The dashboard houses a 4.2-inch TFT driver information display in the gauge cluster, along with the eight-inch infotainment screen with GMC’s IntelliLink software in the center stack. 4G LTE Wi-Fi is included, as is SiriusXM satellite radio, a 110-volt outlet, and several USB ports and 12-volt outlets.


2016 GMC Sierra 1500 All Terrain X - image 663435

Powering the Sierra All Terrain X is the familiar 5.3-liter EcoTec3 V-8. The all-aluminum engine uses direct fuel injection, variable valve timing, and Active Fuel Management to give it both power and economy. The result is 355 horsepower at 5,600 rpm and 383 pound-feet of torque at 4,100 rpm.

"A performance exhaust system helps reduce back pressure, resulting in a 10-horsepower gain."

Thankfully, GMC engineers decided to add some spice to the All Terrain X package. A performance exhaust system helps reduce back pressure, resulting in a 10-horsepower gain. GMC hasn’t mentioned any changes to the torque rating, but we suspect a few extra pound-feet of twist are present. The side benefit to the exhaust system is of course, a more aggressive and throaty sound.

The 5.3-liter V-8 comes paired with a six-speed automatic and a two-speed, electronically operated transfer case. Under normal driving conditions, the transfer case is left in 2WD mode, sending power to the rear wheels. When headed off the beaten path, 4WD high- or low-range can be selected, sending power to all four wheels. The All Terrain X package also makes the Eaton G80 automatic locking rear differential standard equipment. The auto locking mechanism kicks in when one wheel spends roughly 100 rpm faster than the opposite wheel on the rear axle, creating a solid connection between both axle shafts and giving the truck more traction is slippery conditions.

Additionally, the All Terrain X comes with the Z71 suspension package. Rancho monotube shock absorbers help smooth out rough surfaces, a high-capacity air cleaner helps the V-8 breath better for longer in dusty conditions, and underbody skid plates protect drivetrain components from off-road debris. Hill Descent Control also comes with the Z71 package.


GMC has not released pricing at this point, but we suspect the All Terrain X will cost a bit more than the standard All Terrain package that’s currently offered. That package, when added to the Sierra 1500 SLT, costs $2,480. Perhaps the All Terrain X package will be priced between $3,000 and $3,500.

Expect GMC to announce pricing closer to the All Terrain X’s on-sale date in the Spring of 2016.


2016 Chevrolet Silverado 1500 Realtree Edition

2016 Chevrolet Silverado Realtree Edition - image 662608

The Silverado and Sierra come from the same family tree, and that’s easy to see with the Realtree Edition found on the 2016 Silverado. The camo-accented truck comes with black wheel, the same side steps, and similar dark accents on the grille as the All Terrain X. So why list these brothers as competitors? Because they are. Those in the market for a go-anywhere truck that will impress their hunting or outdoorsman buddies would likely give both trucks consideration.

The Silverado Realtree is even powered by the same 5.3-liter V-8, though sadly isn’t offered with the performance exhaust. Still, the truck is plenty cool – at least for those who like camouflage.

Read our full review here


2016 GMC Sierra 1500 All Terrain X - image 663434

GMC seems to have a great package on its hands for the Sierra pickup. The All Terrain X offers increased off-road performance, unique looks, and more horsepower over a standard Sierra. This will undoubtedly attract buyers who consider themselves outdoorsmen or adventure-seekers, or those who want a more customized truck without having to deal with aftermarket equipment. And since the All Terrain X comes from the factory, everything is under warranty from GM.

Beyond all the exterior upgrades, it’s certainly refreshing to see GMC introduce some type of performance enhancer to the powertrain. In this case, the exhaust upgrade not only creates more horsepower, but also creates more sound – something many truck fans are very fond of. Hopefully this exhaust system makes its way onto other GM products in the future.

  • Leave it
    • Likely a pricey option
    • Production likely limited

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Press Release

GMC today announced the 2016 Sierra All Terrain X – a special edition of the All Terrain model, featuring exclusive premium content that enhances off-road capability and an aggressive, monochromatic appearance.

2016 GMC Sierra 1500 All Terrain X - image 663435

The All Terrain X’s powerful attitude reflects a popular personalization trend among off-road enthusiasts, executed with the top-range refinement GMC has cultivated for years with models such as the Sierra Denali. Its premium package of monochromatic exterior trim and special equipment offers a customized appearance in a limited-edition model, complemented with GMC’s latest technologies.

The Sierra All Terrain package blends capability with unique style to make a statement on or off road. Highlights include:

4WD with Eaton locking rear differential
Z71 Off-Road suspension package with Rancho monotube shocks, high-capacity air cleaner, Hill Descent Control and underbody transfer case shield
Rear Park Assist
Unique grille with body-color surround and tinted chrome accents; body-color front and rear bumpers (rear bumper with corner steps)
Spray-on bedliner
All-Terrain-logo instrument cluster
Inclinometer in the driver information center.

Product Details

The new Sierra All Terrain X is offered on the 2016 Sierra 1500 4WD crew cab/short box models with SLT trim. In addition to the standard All Terrain content, the “X” package includes:

2016 GMC Sierra 1500 All Terrain X - image 663436

265/65R18SL Mud-Terrain-rated Goodyear Wrangler DuraTrac MT tires, designed for off-road competence in dirt, gravel and mud, with on-road composure in dry, wet and wintry conditions
18 x 8.5-inch black aluminum wheels
Sport side steps (black)
Bed-mounted sport bar (black) designed to support the accessory off-road LED lighting package
High-performance LED headlamps
Performance exhaust system, which bumps output of the 5.3L V-8 engine to 365 horsepower and adds an aggressive note
Body-color door handles and body-side moldings
Black exterior mirrors, belt moldings and B-pillars
Interior floor liners
Available colors: Onyx Black, Summit White, Stone Blue Metallic, Iridium Metallic, Crimson Red Tintcoat, Light Steel Gray Metallic.

On Sale

Spring 2016


“Styling is the biggest influence on Sierra customers and the new Sierra All Terrain X builds on that with a more aggressive, personalized appearance that complements its exceptional capability,” said Duncan Aldred, vice president of GMC Sales and Marketing. “It joins other models such as the new Sierra Elevation and premium Sierra Denali to offers more choices for finding the premium truck that matches customers’ style and capability needs.”

About the 2016 Sierra 1500

GMC’s best-selling truck rolls into 2016 with a fresh appearance that takes its signature premium styling to a higher level – and offers new, advanced engineering features designed to complement its crafted interior.

2016 GMC Sierra 1500 All Terrain X - image 663437

The new look for the Sierra 1500 offers greater visual distinction among the models and includes new headlamps with GMC signature LED lighting on all models, as well as a new grille design. New technologies include phone integration via GMC IntelliLink, which enhances connectivity and promotes safer driving. It allows smartphone users to connect with applications such as navigation, hands-free messaging and more through Apple CarPlay or Android Auto. Android Auto is standard on a new 7-inch radio and is coming to available 8-inch radios this spring.

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