It's not much different from the standard Suburban RST. It gets the same appearance upgrades such as the body color trim and unique wheels, but now it has that 6.2-liter V8 engine making 420 horsepower and 460 pound-feet of torque. That's a major gain over the standard 5.3-liter V8 making 355 horsepower and 383 pound-feet of torque. The bigger engine comes with other upgrades, too. It's coupled to a 10-speed automatic transmission, and magnetorheological suspension.
Like with the previous year, the RST package opens up extra-cost upgraded brakes and exhaust. The brake upgrade adds six-piston Brembo brake calipers up front, and the calipers are painted red. The exhaust upgrade is a Borla exhaust system that adds sound and, according to Chevrolet, improves exhaust flow, but there aren't any listed power gains.