GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1997 🢒 Firebird 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 Knock Sensor Replacement

Removal Procedure

    Caution: The engine coolant may be hot. The knock sensor is mounted in the engine block cooling passage. The engine coolant in the block will drain with the removal of the knock sensor.

  1. Drain the engine coolant. Refer to Engine Cooling (6B).
  2. Raise the vehicle.
  3. Disconnect the knock sensor wiring harness connector from the knock sensor.
  4. Remove the knock sensor from the engine block.

Installation Procedure
  1. Install the knock sensor into the engine block. Be sure the threads are clean. Do not apply thread sealant to the sensor threads.

    2. Tighten
    Torque the KS to 19 N·m (14 lb ft).

  2. Connect the KS wiring harness connector to the knock sensor.
  3. Lower the vehicle.
  4. Refill the Engine coolant. Refer to Engine Cooling (6B).