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Home >> Chevrolet >> 2004 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System 3.8L (Introduction) >> Repair Instructions >> Knock Sensor (KS) 2 Replacement >> Removal Procedure
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Removal Procedure

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.
  1. Remove the transaxle. Refer to TRANSMISSION REPLACEMENT .
  2. Drain the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  3. Remove the bolts (2) from the knock sensor heat shield (1).
  4. Disconnect the knock sensor electrical connector (3) from the knock sensor.
  5. Remove the knock sensor (4).
    6. Fig 1: Removing KS Sensor (2)
    GM381311Courtesy of GENERAL MOTORS CORP.
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