Removal Procedure

Remove the exhaust manifold lower heat shield. Refer to Exhaust Manifold Lower Heat Shield Replacement .

Fig 1: Identifying Knock Sensor & Crankshaft Position (CKP) Sensor Electrical Connectors
Courtesy of GENERAL MOTORS COMPANY
Disconnect the engine wiring harness electrical connector (1) from the bank 1 knock sensor (2).
Loosen the knock sensor bolt and remove the knock sensor.

Fig 2: View Of Right Knock Sensor & Bolt
Courtesy of GENERAL MOTORS COMPANY