Humming / High Pitch Sound From Drive Line – 2017-2021 Subaru

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NHTSA ID Number: 10207215 Manufacturer Communication Number: 03-87-21 Summary This bulletin provides a repair procedure for R152 type rear differentials.   INTRODUCTION: This bulletin provides a repair procedure for R152 type rear differentials.  In some very rare cases, a customer may experience a humming / high pitch sound coming from the undercarriage while driving.  This can be … Read more