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Home › GMC › 1995 › Forward Control 6.5 Y, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - System/Component Tests - 7.4L › Fuel System › Fuel Control › Oxygen Sensor (O2S)

Oxygen Sensor (O2S)

See ENGINE SENSORS & SWITCHES .

NOTE: If injectors are dirty, they should be cleaned using approved injector cleaning procedure before performing port fuel INJECTOR BALANCE TEST.
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