Warning:Refer toAssistant Driving Warning.
Interior windnoise is not heard when the window is lowered.Interior windnoise is caused by the air leaving the inside of thevehicle through a seal or a seam.
Tape over the relief valves to cause added air pressurewithin the vehicle.Test drive the vehicle and listen for windnoise or awhistle.Pull the vehicle over and make the temporary repairs usingmasking tape. If you cannot determine the source of the windnoise,perform one or more of the following diagnostic tests:Air Pressure TestSoap Suds or Bubble TestTracing Powder or Chalk Test
Exterior Windnoise
Checking Aftermarket AccessoriesOnStar 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: ...