Engine oil life system, Engine oil life system -16 – GMC 2009 Sierra User Manual

Page 328

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Engine Oil Additives

Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM Standard
GM6094M are all you need for good performance
and engine protection.

Engine Oil Life System

When to Change Engine Oil

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 ENGINE OIL SOON message will come on.
See DIC Warnings and Messages on page 3-59.
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 might not
indicate that an oil change 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 dealer/retailer has trained service people
who will perform this work using genuine parts and
reset the system. It is also important to check the 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 your
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
the engine oil and filter based on vehicle use. Whenever
the oil is changed, reset the system so it can calculate
when the next oil change is required. If a situation occurs
where you change the oil prior to a CHANGE ENGINE
OIL SOON message being turned on, reset the system.

Always reset the engine oil life to 100% after every oil
change. It will not reset itself. To reset the Engine Oil
Life System:

1. Display the OIL LIFE REMAINING on the DIC.
2. Press and hold the SET/RESET button on the

DIC for more than five seconds. The oil life will
change to 100%.

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