Scheduled Maintenance; Engine Oil Scheduled Maintenance; Change engine oil and filter as indicated by the - Page 323

Scheduled Maintenance

7-6

Engine Oil Scheduled Maintenance

Change engine oil and filter as indicated by the 
GM Oil Life System

t

 (or every 12 months,

whichever occurs first). Reset the system.

Your vehicle has a computer system that lets you know
when to change the engine oil and filter. This is based 
on engine revolutions and engine temperature, and not
on mileage. Based on driving conditions, the mileage 
at which an oil change will be indicated can vary
considerably. For the oil life system to work properly,
you must reset the system every time the oil is changed.

When the system has calculated that oil life has 
been diminished, it will indicate that an oil change is
necessary. A CHANGE OIL SOON light will come on.
Change your oil as soon as possible within the next two
times you stop for fuel. It is possible that, if you are
driving under the best conditions, the oil life system
may not indicate that an oil change 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. It is also important to check your oil
regularly and keep it at the proper level.

If the system is ever reset accidentally, you must change
your oil at 3,000 miles (5 000 km) since your last oil
change. Remember to reset the oil life system whenever
the oil is changed. See “Oil Life System” in the Index
for information on resetting the system.

An Emission Control Service.