CCIYU Ignition Knock (Detonation) Sensor Fit for KS115 2001-2005 for GMC Safari 4.3L 2001-2005 for GMC Savana 1500 4.3L 2001-2005 for GMC Savana 2500 4.3L 2001-2005 for GMC Sierra 1500 4.3L

CCIYU Ignition Knock (Detonation) Sensor Fit for KS115 2001-2005 for GMC Safari 4.3L 2001-2005 for GMC Savana 1500 4.3L 2001-2005 for GMC Savana 2500 4.3L 2001-2005 for GMC Sierra 1500 4.3L

A vehicle knock sensor is a sensor screwed into the engine s block or cylinder head. It is used to detect engine knock or detonation (there is a piezoelectric element inside the sensor). The signal from the knock sensor is sent to the PCM/ECM and...


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