GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Bonneville 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 Throttle Position Sensor Replacement

Removal Procedure

    Object Number: 574138 Size: SH
  1. Remove the idle air control (IAC) electrical connector (1) from the IAC sensor (4).
  2. Remove the manifold absolute pressure (MAP) sensor electrical connector from the MAP sensor.
  3. Remove the water pump belt cover.
  4. Remove the throttle position (TP) sensor retaining screws electrical connector (2) from the TP sensor (3).
  5. Remove the TP sensor electrical connector (2) from the TP sensor (3).

Installation Procedure

    Object Number: 574138 Size: SH
  1. Install the new O-ring on to the TP sensor.
  2. Connect the TP Sensor electrical connector (2) to the TP sensor (3).

    3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the TP sensor (3) on to the throttle body.

    4. Tighten
    Tighten the TP sensor screws to 2.3 N·m (20 lb in).

  4. Connect the idle air control (IAC) electrical connector (1) to the IAC sensor (4).
  5. Connect the MAP sensor electrical connector to the MAP sensor.
  6. Install the water pump belt and tensioner cover.
  7. Perform the TP Sensor learn procedure:
    8. 7.1. Turn the ignition to the RUN/ON position.
    7.2. Wait 1 minute.
    7.3. Turn the ignition to the LOCK/OFF position.
    7.4. Wait 15 seconds.