Page 257 of 356
6-11
When you open the hood of the 5.7L V8 engine, you'll see:
A. Engine Coolant Reservoir
B. Battery
C. Radiator Pressure Cap
D. Engine Oil Dipstick
E. Engine Oil Fill CapF. Windshield Washer
Fluid Reservoir
G. Engine Cooling Fans
H. Automatic Transmission Fluid
Dipstick (If Equipped)I. Engine Air Cleaner/Filter
J. Power Steering Fluid Reservoir
K. Brake Master Cylinder Reservoir
L. Clutch Master Cylinder
Reservoir (If Equipped)
Before closing the hood, be sure all the filler caps are on.
Then pull the hood down and close it firmly.
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6-12
Engine Oil
If the LOW OIL light
appears on the instrument
cluster, it means you need to
check your engine oil level
right away. For more
information, see ªLow Oil
Lightº in the Index.
You should check your engine oil level regularly; this is
an added reminder.
Checking Engine Oil
It's a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick handle is the yellow loop located
at the rear of the engine compartment. The handle is on
the driver's side of the 3800 V6 engine compartment
and on the passenger's side of the 5.7L V8 engine
compartment. See ªEngine Compartment Overviewº in
the Index for more information on location.
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6-13
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil dipstick
might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
3800 V6 Engine
5.7L V8 Engine
Page 260 of 356

6-14 When to Add Engine Oil
If the oil is at or below the ADD line, then you'll need
to add at least one quart of oil. But you must use the
right kind. This part explains what kind of oil to use.
For engine oil crankcase capacity, see ªCapacities and
Specificationsº in the Index.
NOTICE:
Don't add too much oil. If your engine has so
much oil that the oil level gets above the
cross
-hatched area that shows the proper
operating range, your engine could be damaged.
The oil fill cap is located at the rear of your engine
compartment on the passenger's side of the vehicle. See
ªEngine Compartment Overviewº in the Index for more
information on location.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.
What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the starburst symbol.
This symbol indicates that the oil has been certified by
the American Petroleum Institute (API). Do not use any
oil which does not carry this starburst symbol.
If you change your own oil,
be sure you use oil that has
the starburst symbol on the
front of the oil container. If
you have your oil changed
for you, be sure the oil put
into your engine is
American Petroleum
Institute certified for
gasoline engines.
You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
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6-15
5.7L V8 EngineAs in the chart shown previously, if you have the
5.7L V8 engine, SAE 5W
-30 is best for your vehicle.
However, you can use SAE 10W
-30 if it's going to be
0F (
-18C) or above. These numbers on an oil
container show its viscosity, or thickness. Do not use
other viscosity oils, such as SAE 20W
-50.
As shown in the following chart, if you have the
3800 V6 engine, SAE 10W
-30 is best for your vehicle.
However, you can use SAE 5W
-30 if it's going to be
colder than 60F (16C) before your next oil change.
When it's very cold, you should use SAE 5W
-30.
These numbers on an oil container show its viscosity,
or thickness. Do not use other viscosity oils, such
as SAE 20W
-50.
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6-16
3800 V6 Engine
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
starburst symbol. Failure to use the
recommended oil can result in engine damage not
covered by your warranty.
GM Goodwrench oil meets all the requirements for
your vehicle.
If you are in an area where the temperature falls
below
-20F (-29C), consider using either
an SAE 5W
-30 synthetic oil or an SAE 0W-30 oil.
Both will provide easier cold starting and better
protection for your engine at extremely
low temperatures.
Engine Oil Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for good
performance and engine protection.
Page 263 of 356

6-17 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 OIL CHANGE 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.How to Reset the Oil Change Light
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 OIL
CHANGE light being turned on, reset the system.
After changing the engine oil, the system must be reset.
1. Turn the ignition key to RUN with the engine
turned off.
2. Press the TRIP/OIL RESET button located on the
instrument panel for 12 seconds.
The OIL CHANGE light will start to flash to confirm
that the system is reset. The reset is complete when the
OIL CHANGE light goes out.
Page 264 of 356

6-18 What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Don't 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 throw away 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
filter 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 your used oil, ask your
dealer, a service station or a local recycling center
for help.
Engine Air Cleaner/Filter
The engine air cleaner/filter is located at the front in the
center of the engine compartment. See ªEngine
Compartment Overviewº in the Index for more
information on location.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See ªScheduled Maintenance Servicesº in the Index.