2001 Pontiac Grand Prix Check Engine Light

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1 Response

  1. Ferry says:

    It could be two things. The exsuaht gasket coming to the valve or the vacuum coming to the valve. The egr did not need changing. Without the proper tool to check it out. I can not say which it is or how to repair. It need to go to shop where the proper test can be use to find what need to be repaired of replaced Most likely it will be a one way vacuum valve, that is not working right.