1.75 INCH LEVELING KIT FORGED ALUM UCA | AT4 | GMC SIERRA 1500 4WD (19-25)OVERVIEW The Easy Way to a Leveled Stance. Take your Sierra 1500 to new heights and add a more aggressive appearance with Rough Country's 1. 75 inch Leveling Kit. From the factory, the GMC Sierra AT4 sits lower in the front than the rear, creating a nose down look that leaves a lot to be desired. This leveling kit is the easiest way to lift the front of your ride 1. 75 inches, providing a leveled look and additional clearance for larger tires, while