Rear lift block and longer U-bolts for easy installation and level stance.
Important Note: 2015-2018 Models Only: 20" wheels can not be reinstalled due to GM changing the wheel thickness. The ID of the 20" wheels are smaller on 2015-2018 models. WILL fit RWD models, however the front differential related parts in kit will not be used. Frame bracket modifications required for installation. Optional steering stabilizer (ZON-7103) only fits vehicles that came equipped with a steering stabilizer from the factory. Stock 17" or 18" Wheels cannot be re-installed. Stock 20" wheels cannot be reinstalled on 2015-2018 models. Two-piece rear drive shaft? Add a carrier bearing drop kit to reduce post-lift drive-line angles and avoid / eliminate driveshaft vibration. With a 20" Wheel, 5"-6" backspacing is recommended. In some cases vehicles used in 4WD on the highway regularly could potentially experience a minor front drive-line vibration. If this occurs ZONE recommends replacing the front driveshaft with a dual cardan style
