GM Service Manual Online
For 1990-2009 cars only

Knock Sensor Replacement Left

Removal Procedure


    Object Number: 1480894  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the left exhaust manifold. Refer to Exhaust Muffler Replacement - Left Side in Engine Exhaust.
  3. Remove the left catalytic convertor. Refer to Catalytic Converter Replacement in Engine Exhaust.
  4. Remove the mounting bolt for the knock sensor 1.
  5. Disconnect the electrical connector of the knock sensor from the engine harness (3).
  6. Remove the knock sensor (2) from the engine block (4).

Installation Procedure


    Object Number: 1480894  Size: SH
  1. Reconnect the engine harness (3) and the knock sensor (2) electrical connectors.
  2. Position the knock sensor 2 on the engine block (4).
  3. Install the mounting bolt (1) for the knock sensor 2.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Tighten the knock sensor mounting bolt (1).
  6. Tighten
    Tighten the knock sensor mounting bolt to 20 N·m (15 lb ft).

  7. Install the left catalytic convertor. Refer to Catalytic Converter Replacement in Engine Exhaust.
  8. Install the left exhaust manifold. Refer to Exhaust Muffler Replacement - Left Side in Engine Exhaust.
  9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  10. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.

Knock Sensor Replacement Right

Removal Procedure


    Object Number: 1480896  Size: SH
  1. Remove the negative battery cable. Refer to Battery Negative Cable Replacement in Engine Electrical.
  2. Remove the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side in Engine Exhaust.
  3. Remove the right catalytic convertor. Refer to Catalytic Converter Replacement in Engine Exhaust.
  4. Important: In the following service procedure, it maybe necessary to remove the starter assembly to gain enough clearance to remove the knock sensor.

  5. Remove the starter assembly (4), ONLY IF NEEDED. Refer to Starter Motor Replacement in Engine Electrical.
  6. Remove the knock sensor mounting (1).
  7. Remove the knock sensor 2 from the engine block (5).
  8. Disconnect the engine electrical connector (3) from the knock sensor 2.
  9. Remove the knock sensor 2.

Installation Procedure


    Object Number: 1480896  Size: SH
  1. Reconnect electrical connector (3) for the engine harness to the knock sensor 2.
  2. Position the knock sensor 2 on the engine block (5).
  3. Install the mounting bolt (1) for the knock sensor 2.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Tighten the knock sensor mounting bolt (1).
  6. Tighten
    Tighten the knock sensor mounting bolt 1 to 20 N·m (15 lb ft).

  7. Install the starter assembly (4), ONLY IF REMOVED. Refer to Starter Motor Replacement in Engine Electrical.
  8. Install the catalytic convertor. Refer to Catalytic Converter Replacement in Engine Exhaust.
  9. Install the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side in Engine Exhaust.
  10. Important: Perform the following procedure only if the battery has been disconnected.

  11. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.
  12. Install the negative battery cable. Refer to Battery Negative Cable Replacement in Engine Electrical.