GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 45004 Fuel Tank Drain Hose

Draining Procedure

Warning: Never drain or store fuel in an open container. Always use an approved fuel storage container in order to reduce the chance of fire or explosion.

Warning: Drain the fuel tank to at least 3/4 of a tank before removing the fuel sender retaining ring or fuel sender access panel in order to avoid possible fuel spillage. Failing to follow this procedure could result in personal injury.

Caution: Drain the fuel tank with a hose which has a 13 mm (0.5 in) or smaller diameter in order to prevent the drain hose from getting stuck inside the fuel tank filler neck pipe check valve. Damage to the check valve may result.

Caution: Drain the fuel from the complete system, including injector nozzle(s), the fuel pump, all fuel pipes, and the fuel tank if a vehicle is to be stored for any appreciable length of time. Draining the fuel will prevent the formations of fuel system deposits.

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
  2. Remove the fuel tank filler pipe cap.
  3. Drain the fuel through the fuel tank filler pipe using a hand or air operated fuel pump device and the J 45004 .
  4. Remove the driveline support assembly. Refer to Driveline Support Assembly Replacement.
  5. Remove the crossover tube/hose from the RH fuel tank.
  6. Drain the fuel through the fuel tank crossover connection using a hand or air operated fuel pump device and the J 45004 .