Filling The Tank (Pickup Models) - GMC Sierra 2500 HD2022 Owner's Manual

Warning (Continued)
Turn off the engine when refueling.
Keep sparks, flames, and smoking
materials away from fuel.
Do not leave the fuel pump
unattended.
Avoid using electronic devices while
refueling.
Do not re-enter the vehicle while
pumping fuel.
Keep children away from the fuel
pump and never let children
pump fuel.
Before touching the fill nozzle, touch a
metallic object to discharge static
electricity from your body.
Fuel can spray out if the fuel cap is
opened too quickly. This spray can
happen if the tank is nearly full, and is
more likely in hot weather. Open the
fuel cap slowly and wait for any hiss
noise to stop, then unscrew the cap all
the way.
Turn the fuel cap counterclockwise to
remove. Fully insert and latch the fill nozzle,
begin fueling. 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.
Be careful not to spill fuel. Wait five seconds
after you have finished pumping before
removing the fill nozzle. Clean fuel from
painted surfaces as soon as possible. See
Exterior Care 0 380. Reinstall the cap by
turning it clockwise until it clicks.
Driving and Operating
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, get the right
type of cap from your dealer. The wrong
type of fuel cap may not fit properly,
may turn on the malfunction indicator
lamp, and could damage the fuel system
and emissions system. See Malfunction
Indicator Lamp (Check Engine Light) 0 116.

Filling the Tank (Pickup Models)

If the vehicle has a diesel engine, see the
Duramax diesel supplement.
An arrow on the fuel gauge indicates which
side of the vehicle the fuel door is on. See
Fuel Gauge 0 111.
271