GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 DeVille 🢒 Engine 🢒 Engine Controls - 4.0L and 4.6L 🢒 Throttle Position Sensor Replacement

Removal Procedure

    Object Number: 18590 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the Throttle Body Assembly. Refer to Throttle Body Assembly Replacement .

    3. Object Number: 154945 Size: SH
  3. Remove the TP sensor electrical connector (6) from the TP sensor (7).

    4. Object Number: 18398 Size: SH
  4. Remove the TP sensor mounting bolts (3) from the TP sensor (2).
  5. Remove the TP sensor from the throttle body.
  6. Discard the O-ring.

Installation Procedure

    Object Number: 18398 Size: SH
  1. Install the new O-ring on to the TP sensor.

    2. 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.

  2. Install the TP sensor (2) on to the throttle body.

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


    Object Number: 154945 Size: SH
  3. Install the TP sensor electrical connector (6) to the TP sensor (7).

    4. Object Number: 18590 Size: SH
  4. Install the Throttle Body Assembly. Refer to Throttle Body Assembly Replacement .
  5. Install the negative battery cable.