Question about 1998 GMC Sierra

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1998 gmc Sierra Engine light comes on and says O2 sensors. Replaced all sensors. Next day the light comes back on and says O2 sensors. What causes them to blow?

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Hi, there are a number of trouble codes associated with the O2 sensors. Some indicate a sensor failure and others indicate a different problem. Can you tell me the trouble code you are getting?

Posted on Jan 14, 2011

  • pandino69 Feb 10, 2011

    its a 99 gmc sierra troubleshooting PO174
    PO160
    PO171
    PO140
    PO301

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