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. Disconnect the negative battery cable.
  2. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
  3. Loosen the fuel tank filler pipe cap.
  4. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
  5. Use a hand operated fuel pump device in order to drain the fuel through the fuel sender access panel.
  6. Install the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
  7. Add fuel and tighten the fuel tank filler pipe cap.
  8. Reconnect the negative battery cable.
  9. Inspect for leaks.
  10. 9.1. Inspect turn the ignition switch to the ON position for two seconds.
    9.2. Turn the ignition switch to the OFF for ten seconds.
    9.3. Turn the ignition switch to the ON position again.
    9.4. Visually inspect the fuel system for fuel leaks.