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Removal Procedure

Fig 1: Knock Sensor & crankshaft position (CKP) sensor Electrical Connectors - Bank 1

Courtesy of GENERAL MOTORS COMPANY

Remove the exhaust manifold lower heat shield. Refer to Exhaust Manifold Lower Heat Shield Replacement .
Disconnect the engine wiring harness electrical connector (1) from the bank 1 knock sensor (2).

Fig 2: Right Knock Sensor & Bolt - Bank 1

Courtesy of GENERAL MOTORS COMPANY

Loosen the knock sensor bolt and remove the knock sensor.