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Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls & Fuel - 3.8L - Introduction (2 Of 2) >> Repair Instructions >> Knock Sensor 2 Replacement >> Removal Procedure

Removal Procedure

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. Remove the transaxle. Refer to Transmission Replacement in Automatic Transaxle - 4T65-E.
  2. Drain the cooling system. Refer to Draining and Filling Cooling System (L26, L32 GE 47716 Fill) or Draining and Filling Cooling System (L26, L32 Static Fill) or Draining and Filling Cooling System (LS4 GE 47716 Fill) or Draining and Filling Cooling System (LS4 Static Fill) in Engine Cooling.
  3. Remove the bolts (2) from the knock sensor heat shield (1).
  4. Disconnect the knock sensor electrical connector (3) from the knock sensor.
    5. Fig 1: Disconnecting/Reconnecting Knock Sensor
    GM381311Courtesy of GENERAL MOTORS CORP.
  5. Remove the knock sensor (4).
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