GMC 2010 T-Series, Owner'S Manual

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Here are four concerns of some operators. None of
these shows a problem with your fuel gage:
. The gage moves a little when you turn a corner or
speed up.
. The gage doesn't go back to empty when you turn
off the ignition.
. At the gas station, the pump shuts off before the
gage reads full.
. It takes a little more or less fuel to fill up than the
gage indicated.
Water in Fuel Warning Light
If your vehicle is equipped
with a diesel engine, this
light will come on to warn
you that there is water in
the fuel system.
For more information on how this light works, see Water
in Fuel on page 5 ‑ 10 .
Diesel Particulate Filter Warning
Light
Your vehicle may have
two Diesel Particulate
Filter (DPF) Warning
lights.
These lights will come on briefly when the ignition is
turned to ON/RUN. One of these lights will come on
green during DPF regeneration. If the other light comes
on yellow, perform a manual regeneration or drive the
vehicle for automatic regeneration. If the light changes
from yellow to red, the DPF requires an immediate
regeneration. If the DPF is not regenerated, the service
engine soon light will come on and engine power will be
reduced.
See Diesel Particulate Filter on page 2 ‑ 28 and
Reduced Engine Power Light on page 3 ‑ 36 for more
information.
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