Scheduled Maintenance
When the CHANGE OIL SOON message comes
on, it means that service is required for your
vehicle. Have your vehicle serviced as soon as
possible within the next 600 miles (1 000 km). It is
possible that, if you are driving under the best
conditions, the engine oil life system may
not indicate that vehicle service is necessary for
over a year. However, your engine oil and
filter must be changed at least once a year and at
this time the system must be reset. Your GM
Goodwrench
®
dealer has GM-trained service
technicians who will perform this work using
genuine GM parts and reset the system.
If the engine oil life system is ever reset
accidentally, you must service your vehicle within
3,000 miles (5 000 km) since your last service.
Remember to reset the oil life system whenever
the oil is changed. See
page 414
for information on the Engine Oil Life
System and resetting the system.
When the CHANGE OIL SOON message appears,
certain services, checks, and inspections are
required. Required services are described in the
following for “Maintenance
I
” and “Maintenance
II
.”
Generally, it is recommended that your first
service be Maintenance
I
, your second service be
Maintenance
II
, and that you alternate
Maintenance
I
and Maintenance
II
thereafter.
However, in some cases, Maintenance
II
may be
required more often.
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