Eibach Alignment Camber Cam Nut Kit for 2007-2014 GMC Yukon XL 1500Alignment Kit for the 2007 2014 GMC Yukon XL 1500 re necessary when lifting or lowering vehicles because changes in the height of a vehicle can affect the alignment of its wheels. If a vehicle is lowered or lifted beyond a certain point, factory alignment specifications will not be achievable which can negatively effect handling. These alignment kits not only allow the adjustment of a vehicle's camber back to factory specifications, but they also