Interior windnoise is not heard when the window is lowered. Interior windnoise is caused by the air leaving the inside of the vehicle through a seal or a seam.

1. Tape over the relief valves in order to cause added air pressure within the vehicle.
2. Test drive the vehicle. Listen for windnoise or a whistle.
3. Pull the vehicle over. Make the temporary repairs using masking tape. If you cannot determine the source of the windnoise, perform 1 or more of the following diagnostic tests:

•	Tracing Powder or Chalk Test

•	Air Pressure Test

•	Soap Suds or Bubble Test