Remove the valve rocker arms from the cylinder head. If therocker arms are to be reused, keep in order so they can bereinstalled in the same position.
OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connectto a live Advisor for Emergency, Security, Navigation, Connection, and DiagnosticServices.The OnStar system status light is next to the OnStar buttons. If the status lightis:Solid Green: System is ready.Flashing Green: ...