Hi ive been having a knocking noise occur while driving .Sounds like its coming from outside parts of car. The thing is only when i press breaks does it stop doing it but when i realease it continues making knocking noise.

  • Welcome! What year Pontiac? Model? Total miles? Does the frequency of the knocking increase proportionally with speed? (IE: is knocking sound happen twice as many times per minute went going twice as fast?) Did this start happening suddenly? How long has this been happening? Please edit your question to add those details. I suppose you've looked around Nov 16 '20 at 14:31

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