GMC C-Series 2001, Owner'S Manual

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Used oil can be a real threat to the environment. If you
change your own oil, be sure to drain all free
-
flowing oil
from the filter before disposal. Don’t ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle it by taking it to a place that collects used oil. If
you have a problem properly disposing of your used oil,
ask your dealer, a service station or a local recycling
center for help.
Engine Oil (Caterpillar
R
Diesel Engines)
See your Caterpillar
R
Operation & Maintenance Manual
for information on oil quality and viscosities as well as
the temperature range chart.
Air Filter Restriction Indicator
(Gasoline Engine)
Your engine has an indicator that lets you know when
the air filter is dirty and needs to be serviced. It is
located in the air intake tube below the air cleaner on the
passenger’s side of the engine.
When the CHANGE
FILTER indicator appears
in the sight glass, it’s time
to service the air filter.
After the air filter is properly serviced, the indicator can
be reset by pushing the button on top of the indicator to
reset it.