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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) 1 Replacement >> Removal Procedure
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Removal Procedure

  1. Raise and support the vehicle. Refer toLifting and Jacking the Vehicle in General Information.
  2. Drain the cooling system. Refer toDraining and Filling Cooling System in Engine Cooling.
  3. Disconnect the knock sensor electrical connector (2).
  4. Remove the knock sensor (1).
  5. Fig 1: Removing KS Sensor (1)
    GM892627Courtesy of GENERAL MOTORS CORP.