Special Tools
EN 22738-BValve Spring Tester
For equivalent regional tools, refer toSpecial Tools.
Inspection ProcedureClean the valve springs in solvent.Warning:Refer toSafety Glasses Warning.
Dry the valve springs with compressed air.Inspect the valve springs for broken coils or coilends.Measurement ProcedureMeasure the valve spring tension using theEN 22738-Btester. Refer toEngine Mechanical Specifications.If low valve spring load is found, replace the valve springs.DO NOT use shims to increase spring load. The use of shims cancause the valve spring to bottom out before the camshaft lobe is atpeak lift.
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: ...