GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Chevy Suburban - 4WD 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Poor Fuel Fill Quality

Problem

Causes

DEFINITION: Difficulty when refueling the vehicle.

Difficult to fill
    • If the vehicle is equipped with dual fuel tanks and a single filler neck the flow of the fuel into the tanks may exceed the ability of the system to compensate, the fill nozzle will automatically shut off. The system will require 10-20 seconds to equalize pressure before filling can resume. Refer to Fuel System Description .
    • The check valve is stuck closed.
    • The fill limiter vent valve is stuck closed. Refer to Fuel Tank Replacement .
    • The evaporative emission (EVAP) canister is restricted. Refer to Evaporative Emission Canister Replacement .
    • The EVAP canister vent solenoid is stuck closed. Refer to Evaporative Emission Canister Vent Solenoid Valve Replacement .
    • Restricted EVAP pipes--Refer to Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank .
    • High Reid vapor pressure
    • High fuel temperature
    • The fuel filler hose/pipe is pinched, kinked or blocked. Refer to Filler Tube Replacement .
    • The fuel feed hose, or crossover hose, is pinched, kinked or blocked. Refer to Fuel Injection Fuel Rail Assembly Replacement .
    • The ignition switch is ON.

Over fill
    • The pressure relief valve in the fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .
    • The pressure relief valve in the fill limiter vent is valve leaking. Refer to Fuel Tank Replacement .
    • The fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .
    • The fill limiter vent valve is leaking. Refer to Fuel Tank Replacement .

Premature shut-off of the fuel dispensing nozzle
    • The fill limiter vent valve is stuck closed. Refer to Fuel Tank Replacement .
    • The EVAP canister is restricted. Refer to Evaporative Emission Canister Replacement .
    • The EVAP canister vent solenoid is stuck closed. Refer to Evaporative Emission Canister Vent Solenoid Valve Replacement .
    • Restricted EVAP pipes--Refer to Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank .
    • High Reid vapor pressure
    • High fuel temperature
    • The fuel filler hose/pipe is pinched, kinked or blocked. Refer to Filler Tube Replacement .
    • The fuel feed hose, or crossover hose, is pinched, kinked or blocked. Refer to Fuel Injection Fuel Rail Assembly Replacement .
    • The ignition switch is ON.

Fuel spit back
    • The check valve is stuck open.
    • The check valve is stuck closed.
    • The check valve is leaking.
    • High Reid vapor pressure
    • High fuel temperature

Liquid fuel in the EVAP canister
    • The fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .
    • The fill limiter vent valve is leaking. Refer to Fuel Tank Replacement .

Liquid fuel leak
    • The pressure relief valve in the fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .
    • The pressure relief valve in the fill limiter vent valve is leaking. Refer to Fuel Tank Replacement .
    • The fuel filler hose is loose or torn. Refer to Filler Tube Replacement .
    • The fuel feed hose, or crossover hose, is loose or torn. Refer to Fuel Injection Fuel Rail Assembly Replacement .
    • The fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .

Fuel odor
    • The pressure relief valve in the fill limiter vent valve is stuck open. Refer to Fuel Tank Replacement .
    • The pressure relief valve in the fill limiter vent valve is leaking. Refer to Fuel Tank Replacement .
    • The EVAP canister is saturated. Refer to Evaporative Emission Canister Replacement .