Whistle Type Windnoise at Highway Speeds, or Groaning Type Noise During Periods of Precipitation #94-T-25F - (Jan 8, 2003)

1991-2000 Saturn S-Series Sedans and Wagons built before and including VIN YZ259580

1991-2001 Saturn S-Series Coupes built before and including VIN 1Z115219

Condition:

Some owners may comment that a whistle type noise is heard at highway speeds. The noise may be perceived to come from high up on the dash, near the windshield. The condition may be more pronounced when crosswinds are present or during periods of rain.

Also, a groaning type noise may be heard during periods of precipitation, includes fog, rain and/or snow. This noise is also perceived to come from high up on the dash, near the windshield.

Cause:

These noises may be caused by airflow around the radio antenna mast.

Correction:

Drive the vehicle to confirm the noise conditions. After confirming the noise conditions, remove the radio antenna mast and drive the vehicle to verify that the noise condition is eliminated.

• Important

  Do not use threadlocker to retain the radio antenna mast to the base. The use of threadlocker may cause poor reception.

  If the noise condition is not present with the radio antenna mast removed, replace the radio antenna mast with the new antenna mast -- P/N 21024561. Tighten

  Finger tighten then tighten an additional ¼ turn using an 8 mm open end wrench.

• If the noise condition is present with the radio antenna mast removed, refer to Windnoise Diagnosis and Repair in the appropriate service manual:
• On 2000 and 2001 models, refer to Windnoise Diagnosis and Repair in the Windnoise/Waterleaks/Appearance section of the 2000/2001 S-Series Body/Electrical (Volume I) service manual.
• On 1996-1999 models, refer to Windnoise Diagnosis and Repair in the General Information section of the appropriate model year S-Series Body/Repair service manual.
• On 1991-1995 models, refer to Windnoise Diagnosis and Repair i the General Information section of the appropriate model tear S-Series Body/Collision service manual.

Parts Requirements

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer".  They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle.  Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely.  If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition.  See your GM dealer for information on whether your vehicle may benefit from the information.

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