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 TestBrake Assist System Description and Operation
System Component DescriptionThe brake assist system consists of the following:Brake PedalReceives, multiplies and transfers brake system input forcefrom driver.Brake Pedal PushrodTransfers multiplied input force received from brake pedal tobrake booster.Vacuum Brake BoosterUses source vacuum to decr ...