Sierra AT4 Powers Up With New Off-Road Performance Package

DETROIT — Defining the premium off-road segment, the 2019 GMC Sierra AT4 is now available with the all-new Off-Road Performance Package. The Off-Road Performance Package adds factory-installed performance upgrades that bring additional power and purpose to the Sierra AT4.

“The 2019 GMC Sierra AT4 debuted all-new, purposeful technologies for the premium truck segment and the new Off-Road Performance Package takes it a step farther,” said Duncan Aldred, vice president of Global GMC. “It offers optimized performance, both on- and off-road.”

The Sierra AT4 Off-Road Performance Package includes:

• 6.2L V-8 engine mated to 10-speed automatic transmission.
• 18-inch machined aluminum wheels with Goodyear Wrangler DuraTrac tires.
• Cat-Back Performance Exhaust System.
• Performance Air Intake.

Thanks to these additions, the AT4 Off-Road Performance Package delivers up to 435 horsepower and 469 lb-ft of torque — increases of 15 horsepower and 9 lb-ft of torque over a Sierra equipped with a conventional 6.2L V-8 engine. The 6.2L is manufactured at GM’s Tonawanda engine plant in New York and was recently named a Wards 10 Best Engine for 2019.

For 25 years WardsAuto editors have evaluated every all-new or significantly improved engine or electric propulsion system available in production vehicles in the U.S. Vehicles must have a starting MSRP less than $64,000. The editors score eligible vehicles on horsepower, torque, technology, observed fuel economy, relative competitiveness and noise characteristics.

The Off-Road Performance Package’s upgrades build on the Sierra AT4’s distinctive formula of authentic off-road capability, innovative technology and bold design, along with GMC’s premium refinement.

The Sierra AT4 was introduced earlier this year, and content includes:

• Standard 2-inch factory-installed suspension lift.
• Standard 4WD with a two-speed transfer case, locking rear differential and skid plates.
• Standard off-road-tuned Rancho monotube shock absorbers.
• Standard Hill Descent Control.
• Standard Traction Select System.
• Standard GMC exclusive, industry-first MultiPro Tailgate.
• Standard black chrome finish on the fog lamp bezels, fender surround and grille insert.
• Standard body-color grille surround, door handles and bumper.
• Standard exclusive athletic interior trim elements.
• Standard red vertical recovery hooks.
• Available segment-first Multi-Color Head-Up Display.
• Available segment-first Rear Camera Mirror¹.
• Available GMC-exclusive, industry-first Carbon Fiber Pickup Box².
• A full suite of advanced available safety features including Surround Vision, Lane Change Alert with Side Blind Zone Alert, Front Pedestrian Braking and Low Speed Forward Automatic Braking¹.

The Sierra AT4 Off-Road Performance Package has an MSRP (excludes tax) of $4,940 and is on sale now.