gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Sensors and Switches - Ignition System > < Knock Sensor|Diagrams|Page 9447
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Knock Sensor: Service Precautions

Knock Sensor Service Caution

Caution:  Hot engine coolant may cause severe burns. Although the cooling system has been drained, coolant still remains in the engine water jacket.
This coolant will drain with the removal of the knock sensor.

Sensors and Switches - Ignition System > < Knock Sensor|Diagrams|Page 9447