Owner's Manual

Scheduled Maintenance
When the change engine oil light or CHANGE OIL
SOON DIC 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,
the 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 the last service.
Remember to reset the oil life system whenever
the oil is changed. See Engine Oil Life System on
page 356 for information on the Engine Oil Life
System and resetting the system.
When the light or 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 the first service
be Maintenance I, the 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.
Maintenance I — Use Maintenance I if the light
or message comes on within 10 months since
the vehicle was purchased or Maintenance II
was performed.
Maintenance II — Use Maintenance II if the
previous service performed was Maintenance I.
Always use Maintenance II whenever the light
or message comes on 10 months or more since
the last service or if the light or message has
not come on at all for one year.
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