SI B64 01 15February 2015 Heating and Air Conditioning Technical Service This Service Information bulletin supersedes SI B64 01 15 dated January 2015. designates changes to this revision SUBJECT Whirring/Buzzing Noise Coming from Heating and Air Conditioning System. The customer may complain of a whirring/buzzing noise coming from the heating and air conditioning and/or the instrument cluster. Vibrations from the air conditioning low-pressure line
