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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Engine Control System - 3.8L - Introduction (2 Of 2)) >> Repair Instructions >> Knock Sensor (KS) 2 Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Hot engine coolant may cause severe burns. Although the cooling system has been drained, coolant still remains in the engine water jacket. This coolant will drain with the removal of the knock sensor.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) , Draining and Filling Cooling System (LY7 Static Fill) or Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) .
  3. Disconnect the knock sensor electrical connector (3) from the knock sensor.
    4. Fig 1: Disconnecting/Reconnecting Knock Sensor
    GM381311Courtesy of GENERAL MOTORS CORP.
  4. Remove the knock sensor (4).
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