GM Service Manual Online
For 1990-2009 cars only

Concern

Causes

DEFINITION: Difficulty when refueling the vehicle.

Difficult to fill

    • The check valve is stuck closed
    • The fill limiter vent valve is stuck closed
    • The EVAP canister is restricted
    • The EVAP canister vent valve is stuck closed
    • Any restricted vapor lines
    • A fuel with high Reid Vapor Pressure characteristics
    • A high fuel temperature
    • The fuel filler hose/pipe is pinched, kinked, or blocked

Over fill

    • The pressure relief valve in the fill limiter vent valve is stuck open.
    • The pressure relief valve in the fill limiter vent valve is leaking.
    • The fill limiter vent valve is stuck open.
    • The fill limiter vent valve is leaking.

Pre-mature shut-off of the fuel dispensing nozzle

    • The fill limiter vent valve is stuck closed
    • The EVAP canister is restricted
    • The EVAP canister vent solenoid is stuck closed
    • Any restricted fuel vapor lines
    • A fuel with high Reid Vapor Pressure characteristics
    • A high fuel temperature

Fuel Spitback

    • The check valve is stuck open
    • The check valve is stuck closed
    • The check valve is leaking
    • A fuel with high Reid Vapor Pressure characteristics
    • A high fuel temperature

Liquid fuel in the EVAP canister.

    • The fill limiter vent valve is stuck open.
    • The fill limiter vent valve is leaking.

Liquid fuel leak

    • The pressure relief valve in the fill limiter vent valve is stuck open.
    • The pressure relief valve in the fill limiter vent valve is leaking.
    • The fuel filler hose is loose or torn.
    • The fill limiter vent valve is stuck open.

Fuel Odor

    • The pressure relief valve in the fuel limiter vent valve is stuck open.
    • The pressure relief valve in the fill limiter vent valve is leaking.
    • The EVAP canister is saturated with fuel.