Knock Sensor #1/Bank 1

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Disconnect the knock sensor connector (A).

Fig 1: Knock Sensor Connector 1/1
Courtesy of HYUNDAI MOTOR AMERICA
Remove the intake manifold.
(Refer to "INTAKE MANIFOLD ")
Remove the installation bolt (A), and then remove the sensor from the cylinder block.

Fig 2: Knock Sensor Installation Bolt 1/1
Courtesy of HYUNDAI MOTOR AMERICA