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Engine Oil Life System
When to Change Engine Oil (Vehicles
With Driver Information Center)
If your vehicle has a Driver Information Center
(DIC), it has the Engine Oil Life System, a
computer system that lets you know when to
change the engine oil and lter. 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 message
will come on. SeeDIC Warnings and Messages on
page 148. Change the oil 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 oil life system may not indicate that an oil
change is necessary for over a year.However, the engine oil and lter must be changed
at least once a year and at this time the system
must be reset. Your dealer has GM-trained service
people who will perform this work using genuine
GM parts and reset the system. 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 the oil at 3,000 miles (5 000 km) since
the last oil change. Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to
change your engine oil and lter based on vehicle
use. Anytime your oil is changed, reset the
system so it can calculate when the next oil
change is required. If a situation occurs where you
change your oil prior to a CHANGE OIL SOON
message being turned on, reset the system.
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After changing the engine oil, the system must be
reset as follows:
1. Turn the ignition to RUN, with the engine off.
2. Press the information and reset buttons
on the DIC at the same time to enter the
personalization menu. SeeDIC Vehicle
Personalization on page 152.
3. Press the information button to scroll through
the available personalization menu modes
until the DIC display shows OIL-LIFE RESET.
4. Press and hold the reset button until the DIC
display shows ACKNOWLEDGED. This will
tell you the system has been reset.
5. Turn the key to LOCK.
If the CHANGE OIL SOON message comes back
on when you start your vehicle, the engine oil
life system has not reset. Repeat the reset
procedure.What to Do with Used Oil
Used engine oil contains certain elements that
may be unhealthy for your skin and could
even cause cancer. Do not let used oil stay on
your skin for very long. Clean your skin and nails
with soap and water, or a good hand cleaner.
Wash or properly dispose of clothing or rags
containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil
products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from
the lter before disposal. Never dispose of oil by
putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle it by taking it to a place that collects used
oil. If you have a problem properly disposing of
used oil, ask your dealer, a service station, or a
local recycling center for help.
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Scheduled Maintenance
The services shown in this schedule up to
100,000 miles (160 000 km) should be repeated
after 100,000 miles (160 000 km) at the same
intervals for the life of this vehicle. The services
shown at 150,000 miles (240 000 km) should
be repeated at the same interval after
150,000 miles (240 000 km) for the life of
this vehicle.
SeePart B: Owner Checks and Services on
page 346andPart C: Periodic Maintenance
Inspections on page 351.
Footnotes
†The U.S. Environmental Protection Agency or
the California Air Resources Board has determined
that the failure to perform this maintenance item
will not nullify the emission warranty or limit
recall liability prior to the completion of the
vehicle’s useful life. We, however, urge that all
recommended maintenance services be performed
at the indicated intervals and the maintenance
be recorded.*If your vehicle has a Driver Information Center
(DIC), it also has the GM Oil Life System, a
computer system that lets you know when to
change the oil and lter. 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 message
on the Driver Information Center (DIC) will
come on. See DIC Warnings and Messages on
page 148. Change your oil as soon as possible
within the next two times you stop for fuel.
See Engine Oil on page 247. 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 lter 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.
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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
Engine Oil Life System on page 252 for information
on resetting the system.
+A good time to check your brakes is during
tire rotation. See Brake System Inspection
on page 352.
5,000 Miles (8 000 km)
❑Vehicles with Driver Information Center (DIC):
The Engine Oil Life System will tell you when
to change the engine oil and lter. See
Engine Oil Life System on page 252.An
Emission Control Service. (See footnote *)
❑Vehicles without Driver Information Center:
Change engine oil and lter (or every
3 months, whichever occurs rst).An Emission
Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 293for proper rotation pattern and
additional information.(See footnote +.)
10,000 Miles (16 000 km)
❑Vehicles with Driver Information Center (DIC):
The Engine Oil Life System will tell you when
to change the engine oil and lter. See
Engine Oil Life System on page 252.An
Emission Control Service. (See footnote *)
❑Vehicles without Driver Information Center:
Change engine oil and lter (or every
3 months, whichever occurs rst).An Emission
Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 293for proper rotation pattern and
additional information.(See footnote +.)
15,000 Miles (24 000 km)
❑Vehicles with Driver Information Center (DIC):
The Engine Oil Life System will tell you when
to change the engine oil and lter. See
Engine Oil Life System on page 252.An
Emission Control Service. (See footnote *)
❑Vehicles without Driver Information Center:
Change engine oil and lter (or every
3 months, whichever occurs rst).An Emission
Control Service.
338