GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Knock Sensor Replacement

Removal Procedure

    Object Number: 54608 Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
  2. Gently pry up the rubber covers.
  3. Disconnect the knock sensor electrical connectors.

    4. Object Number: 309864 Size: SH
  4. Remove the knock sensors.

Installation Procedure

    Notice: Refer to Component Fastener Tightening Notice in the Preface section.


    Object Number: 309864 Size: SH
  1. Install the knock sensors.

    2. Tighten
    Tighten the sensors to 20 N·m (15 lb ft).


    Object Number: 832149 Size: SH
  2. Connect the knock sensor electrical connectors.
  3. insure the rubber covers are securely in place.
  4. Install the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical - 4.8L, 5.3L, and 6.0L.