Filling A Portable Fuel Container - Chevrolet GMC Duramax 2023 Manual

For models with dual fuel tanks, the fuel
gauge shows an average of both tanks.
When refueling, refuel the primary front
tank first, then add fuel to the auxiliary
rear tank.
Warning
Overfilling the fuel tank by more than
three clicks of a standard fill nozzle may
cause:
Vehicle performance issues, including
engine stalling and damage to the fuel
system.
Fuel spills.
Under certain conditions, fuel fires.
Diesel fuel can foam when filling the tank.
The automatic pump nozzle may shut off,
even if the tank is not full. Wait for the
foaming to stop, and then fill the tank more
slowly. Be careful not to spill fuel. Wait
five seconds after pumping before removing
the fill nozzle. Clean fuel from painted
surfaces as soon as possible. See Exterior
Care 0 59.
Reinstall the cap by turning it clockwise
until it clicks. Push the fuel door closed.
Warning
If a fire starts while you are refueling, do
not remove the fill nozzle. Shut off the
flow of fuel by shutting off the pump or
by notifying the station attendant. Leave
the area immediately.
Caution
If a new fuel cap is needed, be sure to
get the right type of cap from your
dealer. The wrong type of fuel cap may
not fit properly and could damage the
fuel system.
Accidental Refueling with Gasoline
Caution
If the vehicle is accidentally refueled with
gasoline, do not continue driving the
vehicle except to get to a location where
it can be stopped safely. Driving the
vehicle will damage the engine. Tow the
vehicle for service. Have the gasoline
removed from the tank and fuel system.
Driving and Operating

Filling a Portable Fuel Container

Warning
Never fill a portable fuel container while
it is in the vehicle. Static electricity
discharge from the container can ignite
the fuel vapor. You or others could be
badly burned and the vehicle could be
damaged. To help avoid injury to you
and others:
Dispense fuel only into approved
containers.
Do not fill a container while it is
inside a vehicle, in a vehicle's trunk, in
a pickup bed, or on any surface other
than the ground.
Bring the fill nozzle in contact with
the inside of the fill opening before
operating the nozzle. Maintain contact
until filling is complete.
Keep sparks, flames, and smoking
materials away from fuel.
Avoid using electronic devices while
pumping fuel.
29