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Home >> Buick >> 2005 >> LeSabre Limited, 4T65E/MN3 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Knock Sensor (KS) 2 Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Removing/Installing Knock Sensor
    GM389301Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: DO NOT apply thread sealant to sensor threads. The sensor is coated at the factory and applying additional sealant will affect the sensor's ability to detect detonation.
  1. Install the knock sensor (2) into the engine block (1).

    Tighten:  Tighten the knock sensor to 19 N.m (14 lb ft).

  2. Install the knock sensor heat shield

    Tighten:  Tighten the bolts to 60 N.m (44 lb ft).

  3. Connect the electrical connector to the knock sensor.
  4. Install the splash shield.
  5. Lower the vehicle.
  6. Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  7. Check the coolant level.
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