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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) 1 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.
    Fig 1: Locating Knock Sensor Components
    GM892627Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
    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.
  1. Install the knock sensor (1).

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

  2. Connect the knock sensor electrical connector (2).
  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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