Scheduled Maintenance - Chevrolet 2004 Corvette Owner's Manual

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 Engine Oil on page 5-13 for information on
the Engine Oil Life System and resetting the system.
6-4
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.
Maintenance I — Use Maintenance I if the message
comes on within ten months since 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 message comes on ten
months or more since the last service or if the message
has not come on at all for one year.