GMC T-Series 2007, Owner'S Manual

Page: 136 / 356

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. One of these lights will come
on green during DPF regeneration. If the other
light comes on yellow, the vehicle can continue
running, but at a reduced speed and duration.
If the light changes from yellow to red, the DPF
requires an immediate regeneration. If the DPF
is not regenerated, the check engine light will
come on and engine power will be reduced.
See Diesel Particulate Filter on page 87 and
Reduced Engine Power Light on page 133
for more information.
Air Pressure Gage
If your vehicle has air
brakes, this gage shows
the air pressure for
both your front and
rear brake systems.
If the needle on the gage indicates that the air
pressure is below 60 psi (415 kPa), the low
air warning light will come on. An alarm will also
sound if this happens.
The top pointer shows the pressure available
for the front system, while the bottom pointer
shows pressure for the rear. There should be
no more than 4 psi (28 kPa) difference showing
between the systems.
Don’t drive until both pointers are showing at least
120 psi (830 kPa), so you’ll have enough air if
you need to apply your brakes.
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