Pontiac 2005 GTO - Manual (Page 280)

Scheduled Maintenance
When the Service Engine Oil light on the trip computer
display comes on, it means that service is required
for your vehicle. See Trip Computer on page 3-33. 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 your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil Life System on page 5-16 for information on
the Engine Oil Life System and resetting the system.
When the Service Engine Oil light 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 light 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 comes on 10 months
or more since the last service or if the light has not
come on at all for one year.
6-4