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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Control System - 3.8L - Introduction (2 Of 2)) >> Repair Instructions >> Knock Sensor (KS) 2 Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to Fastener Notice .
IMPORTANT: DO NOT apply thread sealant to sensor threads. The sensor is coated at factory and applying additional sealant will affect the sensors ability to detect detonation.
    Fig 1: Disconnecting/Reconnecting Knock Sensor
    GM381311Courtesy of GENERAL MOTORS CORP.
  1. Install the knock sensor (4).

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

  2. Connect the knock sensor electrical connector.
  3. Lower the vehicle.
  4. Fill the cooling system. Refer to Draining and Filling Cooling System (LY7) or Draining and Filling Cooling System (L26) in Engine Cooling.
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