GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2005 🢒 L300/LW300 🢒 Engine 🢒 Engine Controls - 3.0L (L81) 🢒 Knock Sensor 2 Replacement

Removal Procedure

    Object Number: 894704 Size: SH
  1. Turn the steering wheel all the way to the right.
  2. Turn the ignition OFF.
  3. Disconnect the knock sensor 2 harness connector.
  4. Following the steps below:
    5. 4.1. Remove the knock sensor 2 pigtail from the camshaft position sensor clip.
    4.2. Pull the sensor pigtail wire away from the 1 attachment clip located about 6 inches down the wire from the camshaft position sensor clip.
    4.3. Tie a 4-foot long strip to one end of the knock sensor 2 connector and the other end to a fixed component near the camshaft position sensor.
  5. Slightly loosen the power steering pump pulley bolts. Do not back the bolts out.

    6. Object Number: 898882 Size: SH
  6. Remove the accessory drive belt.

    7. Object Number: 894704 Size: SH
  7. Remove the power steering pump pulley bolts and the power steering pump pulley.

    8. Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  8. Raise the vehicle.

    9. Object Number: 894667 Size: SH
  9. Remove the knock sensor 2 attachment bolts and guide the knock sensor with a string out from the bottom. Remove the string from the end of the knock sensor, but leave the string hanging.

Installation Procedure
  1. Tie the end of the string to the connector end of the knock sensor 2.
  2. Pull up on the string above the A/C compressor to guide the sensor connector around the A/C compressor bracket.

    3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 894667 Size: SH
  3. Once the knock sensor connector is above the A/C compressor, install the knock sensor 2 attachment bolt with a knock sensor 2 wire facing between the 9 and 10 o'clock position.

    4. Tighten
    Tighten the knock sensor bolt to 20 N·m (15 lb ft).

  4. Lower the vehicle.
  5. Attach the knock sensor wire to the attachment clip located about 6 inches below the attachment clip on the camshaft position sensor.
  6. Attach the knock sensor wire to the attachment clip located on the camshaft position sensor.
  7. Connect the knock sensor 2 harness connector. Push the connector in until the lock position is felt, then pull back to confirm engagement.
  8. Install the power steering pump pulley and snug down the attachment bolts.

    9. Object Number: 898882 Size: SH
  9. Install the accessory drive belt.
  10. Tighten the power steering pump pulley bolts.

    11. Tighten
    Tighten the power steering pulley bolt to 20 N·m (15 lb ft).