GM Service Manual Online
For 1990-2009 cars only

Draining Procedure

Caution: Do not drain the fuel into an open container. Never store the fuel in an open container due to the possibility of a fire or an explosion.

Notice: Do not drain fuel through the fuel tank filler pipe in order to prevent damage to the fuel tank filler pipe check-ball.

  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
  2. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement
  3. Use a hand operated fuel pump device in order to drain the fuel through the fuel sender access panel.
  4. Install the fuel sender assembly. Refer to Fuel Sender Assembly Replacement
  5. Remove the fuel fill cap.
  6. Add fuel and reinstall the fuel tank filler pipe cap.
  7. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.
  8. Inspect for leaks.
  9. 8.1. Turn the ignition switch ON for 2 seconds.
    8.2. Turn the ignition switch OFF for 10 seconds.
    8.3. Turn the ignition switch ON.
    8.4. Check for fuel leaks.
  10. Reinstall the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.