Buick 2005 LaCrosse - Manual (Page 372)

The proper replacement parts, fluids and lubricants to
use are listed in Recommended Fluids and Lubricants
on page 6-12 and Normal Maintenance Replacement
Parts on page 6-13. When your vehicle is serviced,
make sure these are used. All parts should be replaced
and all necessary repairs done before you or anyone
else drives the vehicle. We recommend the use of
genuine GM parts.
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 5-18 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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