GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Monte Carlo 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Fuel Tank Pressure Sensor Replacement

Removal Procedure

    Object Number: 50636 Size: SH
  1. Relieve the system fuel pressure. Refer to Fuel Sender Assembly Replacement
  2. Drain fuel tank. Refer to Fuel Tank Draining
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in general information.
  4. Remove the fuel tank. Refer to Fuel Tank Replacement
  5. Disconnect the electrical connector from the fuel tank vapor pressure sensor.
  6. Remove the fuel tank vapor pressure sensor (7) from modular fuel sender.

Installation Procedure

    Object Number: 50636 Size: SH
  1. Install the new fuel tank vapor pressure sensor (7) to modular fuel sender.
  2. Connect the electrical connector to fuel tank vapor pressure sensor
  3. Reinstall the fuel tank. Refer to Fuel Tank Replacement
  4. Lower the vehicle.
  5. Refill tank and reinstall the fuel fill cap.
  6. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.
    7. 6.1. Turn the ignition switch ON for 2 seconds.
    6.2. Turn the ignition switch OFF for 10 seconds.
    6.3. Turn the ignition switch ON.
    6.4. Check for fuel leaks.
  7. Reinstall the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement in engine mechanical.