One thing the 2019 GMC Sierra AT4 doesn’t lack is
capability but now you can make it even stronger with the newly-available
Off-Road Performance Package. Adding factory-installed performance upgrades, the pack gives the
Sierra AT4 more power and purpose. The Off-Road Performance Package consists of
a standard 6.2-liter V8 engine that gains more power and torque compared to its
stock form courtesy of a performance air intake and cat-back performance
exhaust system.
Mated to a 10-speed automatic transmission, the
power plant now makes 435 hp and 635 Nm of torque. Those
are increases of 15 hp and 12 Nm of torque over the Sierra
AT4 equipped with the same 6.2-liter V8 engine.
In addition to the engine upgrades, the 2019 Sierra
AT4 Off-Road Performance Package features 18-inch machined aluminum wheels shod
with Goodyear Wrangler DuraTrac tires. All in all, GMC says the pack offers
“optimized performance, both on- and off-road.”
The features in the Off-Road Performance package add
to the off-road-focused specification of the 2019 GMC Sierra AT4. Introduced
earlier this year, the AT4 comes fitted as standard with a 2-inch suspension
lift, 4WD with a two-speed transfer case, locking rear differential, skid
plates, off-road-tuned Rancho monotube shock absorbers, Hill Descent Control,
and Traction Select System.
Highlights also include the GMC-exclusive MultiPro
tailgate, red vertical recovery hooks, and more. The Off-Road Performance
Package for the 2019 Sierra AT4 is on sale now for US$ 4,940.
