GM Service Manual Online
For 1990-2009 cars only
  1. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement
  2. 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.

  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