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Thread: 02 Chevy Avalanche 5.3 (O2) Sensors

  1. #1
    TheHydroman Guest

    Cool 02 Chevy Avalanche 5.3 (O2) Sensors

    Has anyone tangled with quad o2 sensors on a 5.3 vortec?

  2. #2

    Default

    I know that 2 are heater wires and 2 are sensor wires
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