CHEVROLET Tahoe - Manual (Page 579)

Scheduled Maintenance
When the CHANGE ENGINE 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 Engine Oil Life System on
page 462 for information on the Engine Oil Life
System and resetting the system.
When the CHANGE ENGINE 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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