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A. Engine Coolant Recovery Tank. SeeCooling System
on page 5-29.
B. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-21.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-36.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-16.
E. Automatic Transmission Fluid Dipstick. See
“Checking the Fluid Level” underAutomatic
Transmission Fluid on page 5-22.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-16.G. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-27.
H. Remote Negative (−) Terminal (Marked GND).
SeeJump Starting on page 5-41.
I. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-35.
J. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-37.
K. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 5-99.
L. Battery. SeeBattery on page 5-40.
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Engine Oil
Checking Engine Oil
It is 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 a yellow loop. See
Engine Compartment Overview on page 5-12for the
location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If you do not do this,
the oil dipstick might not show the actual level.
2. 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.
When to Add Engine Oil
L6 Engine
V8 Engine
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If the oil is below the cross-hatched area (L) for the
L6 engine or below the cross-hatched area at the tip of
the dipstick for the V8 engine, you will need to add at
least one quart/liter of oil. But you must use the right kind.
This section explains what kind of oil to use. For engine
oil crankcase capacity, seeCapacities and Speci cations
on page 5-108.
Notice:Do not add too much oil. If your engine
has so much oil that the oil level gets above the
cross-hatched area (F) that shows the proper
operating range for the L6 engine or above the
cross-hatched area for the V8 engine, your engine
could be damaged.SeeEngine Compartment
Overview on page 5-12for
the location of the engine
oil ll cap.
Be sure to add enough oil to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you are through.
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What Kind of Engine Oil to Use
Look for two things:
GM6094M
Your vehicle’s engine requires oil meeting standard
GM6094M. You should look for and use only an oil
that meets standard GM6094M.
SAE 5W-30
As shown in the viscosity chart, SAE 5W-30 is best
for your vehicle.These numbers on an oil container show its
viscosity, or thickness. Do not use other viscosity
oils such as SAE 20W-50.
Oils meeting these
requirements should
also have the starburst
symbol on the container.
This symbol indicates that
the oil has been certi ed
by the American Petroleum
Institute (API).
You should look for this information on the oil container,
and useonlythose oils that are identi ed as meeting
standard GM6094M and have the starburst symbol
on the front of the oil container.
Notice:Use only engine oil identi ed as meeting
standard GM6094M and showing the American
Petroleum Institute Certi ed For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
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If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use 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
Do not add anything to your oil. The recommended oils
with the starburst symbol that meet standard GM6094M
are all you will 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 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 ENGINE OIL message will come on in the
Driver Information Center (DIC). SeeDIC Warnings and
Messages on page 3-47. 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 trained
service people who will perform this work 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
your 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.
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