Chevrolet VENTURE 2004 Specifications download pdf (Page 369)

100

101

When to Change Engine Oil

(GM Oil Life 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 ENGINE OIL message 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. Your dealer has GM-trained

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 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.

How to Reset the Change Engine Oil

Message

The GM Oil Life System calculates when to change

your engine oil and ﬁlter 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 ENGINE OIL message being turned on, reset

the system.

1. With the ignition key in RUN but the engine off,

repeatedly push the trip/reset button until OIL is

displayed on the Driver Information Center (DIC).

2. Once OIL is displayed, push and hold the trip/reset

button for ﬁve seconds. The number will disappear

and be replaced by 100 (indicating 100% oil life

remaining).

3. Turn the key to OFF.

If the CHANGE ENGINE OIL message comes back on

when you start your vehicle, the engine oil life system

has not reset. Repeat the procedure.

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Chevrolet VENTURE 2004 Specifications Page 369

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