98 chev 2500 p/u 350 vortec

how to remove o2 sensors located in front and back of conveter catylic

1 thought on “98 chev 2500 p/u 350 vortec”

  1. The Heated Oxygen Sensor (HO2S) may be difficult to remove when the engine temperature is below 48°C (120°F). Excessive force may damage the threads in the exhaust manifold or the exhaust pipe.
    Oxygen Sensor Removal

    Warning! Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
    •Disconnect the negative battery cable.
    •Raise the vehicle. Refer to Lifting and Jacking the Vehicle in your owner’s manual.
    •Remove the HO2S sensor connector heat shield if necessary.
    •Remove the HO2S sensor harness connector.
    •Carefully remove the heated oxygen sensor using a J 39194 Oxygen Sensor Wrench. (7/8″ O2 Sensor Wrench)
    o2 Sensor tool J 39194

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