GM Service Manual Online
For 1990-2009 cars only

Problem

Causes

Difficult to fill

    • Valve stuck closed
    • Fill limiter vent valve stuck closed
    • The evaporative emission (EVAP) canister being restricted
    • EVAP vent valve stuck closed
    • Restricted vapor lines
    • High reid vapor pressure or high fuel temperature
    • Fuel filler hose is pinched or kinked
    • Ignition is ON

Over fill

    • Pressure relief valve in fill limiter vent valve is stuck open
    • Pressure relief valve in fill limiter vent valve is leaking
    • Fill limiter vent valve stuck open
    • Fill limiter vent valve is leaking

Pre-mature shut-off of the fuel dispensing nozzle

    • Fill limiter vent valve stuck closed
    • EVAP canister restricted
    • EVAP vent valve stuck closed
    • Restricted vapor lines
    • High reid vapor pressure or high fuel temperature
    • Ignition is ON

Fuel spitback

    • Valve stuck open
    • Valve stuck closed
    • Valve leaking
    • High reid vapor pressure or high fuel temperature

Liquid to EVAP canister

    • Fill limiter vent valve stuck open
    • Fill limiter vent valve leaking

Liquid leak to ground

    • Pressure relief valve in fill limiter vent valve is stuck open, or leaking
    • Fuel filler hose loose or torn
    • Fill limiter vent valve stuck open

Fuel odor

    • Pressure relief in fuel limiter vent valve stuck open, or leaking
    • Saturated EVAP canister