GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Engine 🢒 Engine Controls - 4.0L and 4.6L 🢒 Fuel Tank Pressure Sensor Replacement

Removal Procedure

Tools Required

J 34730 Fuel Pressure Gauge

Caution: Fuel Vapors can collect while servicing fuel system parts in enclosed areas such as a trunk. To reduce the risk of fire and increased exposure to vapors:

   • Use forced air ventilation such as a fan set outside of the trunk.
   • Plug or cap any fuel system openings in order to reduce fuel vapor formation.
   • Clean up any spilled fuel immediately.
   • Avoid sparks and any source of ignition.
   • Use signs to alert others in the work area that fuel system work is in process.

Notice: Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:

   • The fuel pipe connections
   • The hose connections
   • The areas surrounding the connections


    Object Number: 153237 Size: SH
  1. Relieve the fuel system fuel pressure. Refer to the Fuel Pressure Relief .
  2. Remove the spare tire cover, the jack, and the spare tire.
  3. Remove the rear compartment trim panel (1). Refer to Rear Compartment Trim Panel Replacement in Instrument Panel, Gauges and Console.

    4. Object Number: 153219 Size: SH
  4. Remove the bolts from the fuel sender access panel.

    5. Object Number: 188361 Size: SH
  5. Disconnect the fuel tank pressure sensor (1) electrical sensor connector.
  6. Remove the fuel tank pressure sensor clip.
  7. Remove the fuel tank pressure sensor (1) from the modular fuel sender (6).

Installation Procedure

    Object Number: 188361 Size: SH
  1. Install the new fuel tank pressure sensor (1) on to the modular fuel sender.
  2. Connect the fuel tank pressure sensor (1) electrical sensor connector to the fuel tank pressure sensor.
  3. Reinstall the fuel tank pressure sensor clip.

    4. 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.


    Object Number: 153219 Size: SH
  4. Install the fuel sender access panel bolts.

    5. Tighten
    Tighten the bolts to 2 N·m (18 lb in).


    Object Number: 153237 Size: SH
  5. Install the rear compartment floor trim (1). Refer to Rear Compartment Trim Panel Replacement in Instrument Panel, Gauges and Console.
  6. Reinstall the spare tire cover, the jack, and the spare tire.
  7. Tighten the fuel tank filler pipe cap.
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  9. Reinstall the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
  10. Install the intake manifold sight shield.

    11. Tighten
    Tighten the nuts to 3 N·m (27 lb in).