GMC is offering a new factory installed off-road performance package for its 2019 Sierra AT4 that adds 15 horsepower, and 9 ft.-lb. of torque to the standard model.
The package, which retails for nearly $5,000 and is currently available, 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.
“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,” says Duncan Aldred, vice president of Global GMC. “It offers optimized performance, both on- and off-road.”
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 standard 6.2L V-8 engine.