2005 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Poor Fuel Fill Quality

Poor Fuel Fill Quality

Problem 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 evaporative emission (EVAP) canister is restricted.
  • The EVAP canister vent solenoid is stuck closed.
  • Restricted EVAP pipes
  • High Reid vapor pressure
  • High fuel temperature
  • The fuel filler hose/pipe is pinched, kinked or blocked.
  • The fuel feed hose, or crossover hose, is pinched, kinked or blocked.
  • The ignition switch is ON.
Over fill
  • The pressure relief valve in the fill limiter vent valve is stuck open.
  • The pressure relief valve in the fill limiter vent is valve leaking.
  • The fill limiter vent valve is stuck open.
  • The fill limiter vent valve is leaking.
Premature shut-off of the fuel dispensing nozzle
  • The check valve is stuck closed.
  • The fill limiter vent valve is stuck closed.
  • The EVAP canister is restricted.
  • The EVAP canister vent solenoid is stuck closed.
  • Restricted EVAP pipes
  • High Reid vapor pressure
  • High fuel temperature
  • The fuel filler hose/pipe is pinched, kinked or blocked.
  • The fuel feed hose, or crossover hose, is pinched, kinked or blocked.
  • 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.
  • 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 fuel feed hose, or crossover hose, is loose or torn.
  • The fill limiter vent valve is stuck open.
Fuel odor
  • 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 EVAP canister is saturated.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.