Vehicle is Difficult to Fill with Fuel or Filling Station Pump Shuts Off Before Tank is Full (Inspect Fuel Tank Vent Tube Opening and Replace Fuel Tank)

Some customers may comment that their vehicle is difficult to fill with fuel or when filling, the pump continuously shuts off before the tank is full.

This condition may be caused by the fuel filler tank vent opening being collapsed inside the tank, which does not allow fuel vapors to vent sufficiently.

This condition may cause the fuel fill nozzle to shut off prematurely.

Inspect the fuel filler tank vent for blockage and replace the fuel tank if an obstruction is encountered using the procedure listed below.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information in the Service Manual (SI Document ID #928339).
2. Remove the fuel tank vent hose from the fuel tank.
3. Using a plastic tie strap (at least 254 mm (10 in) long), insert the pointed end of the strap into the elbow fitting of the vent and push it beyond the 90 degree elbow in the vent fitting through into the tank. The tie strap should be able to go into the tank at least 203 mm (8 in).
4. If a solid obstruction is encountered, replace the fuel tank. Refer to Fuel Tank Replacement in the Engine Controls sub-section of the Service Manual (SI Document ID #861699).

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use: