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Home >> Saturn >> 2005 >> L300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Knock Sensor (KS) 1 Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: Using 15 mm Wrench To Rotate Tensioner Pulley
    GM894336Courtesy of GENERAL MOTORS CORP.
  1. Record the preset radio stations.
  2. Turn the ignition OFF.
  3. Disconnect the negative battery cable.
  4. Disconnect the knock sensor 1 harness connector.
  5. Release the accessory drive belt from the generator pulley and belt tensioner pulley.
    6. Fig 2: Removing/Installing Generator Assembly
    GM895788Courtesy of GENERAL MOTORS CORP.
  6. Remove the upper generator to the engine block bolt.
    7. CAUTION: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.
  7. Raise the vehicle.
  8. Remove the right side front splash shield pushpins and screws to remove the splash shield.
    9. Fig 3: Removing/Installing Drive Belt Tensioner
    GM896418Courtesy of GENERAL MOTORS CORP.
  9. Remove the belt tensioner bolts and remove the belt tensioner.
  10. Remove the generator L-terminal connector nut (ring terminal nut), then remove the connector from the generator.
  11. Remove the generator charging terminal wire (ORN wire).
    12. Fig 4: Removing/Installing Generator Assembly
    GM895788Courtesy of GENERAL MOTORS CORP.
  12. Remove the lower generator to the engine block bolt and move the generator enough to access the knock sensor 1 wire.
    13. IMPORTANT: Note the knock sensor 1 wire routing before removing the sensor.
  13. Remove the knock sensor 1 bolt and the knock sensor 1 from the attachment clips, and then remove the knock sensor 1.
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