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A. Engine Coolant Recovery Tank. SeeCooling System
on page 5-32.
B. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-24.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-39.
D. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-18.
E. Automatic Transmission Fluid Dipstick. See
“Checking the Fluid Level” underAutomatic
Transmission Fluid on page 5-25.
F. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-18.G. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-30.
H. Remote Negative (−) Terminal (Marked GND).
SeeJump Starting on page 5-44.
I. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-38.
J. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-40.
K. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 5-112.
L. Battery. SeeBattery on page 5-43.
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A. Engine Coolant Recovery Tank. SeeCooling System
on page 5-32.
B. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-24.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-39.
D. Engine Oil Fill Cap (Under Engine Cover).
See “When to Add Engine Oil” underEngine
Oil on page 5-18.
E. Engine Oil Dipstick (Out of View). See “Checking
Engine Oil” underEngine Oil on page 5-18.
F. Automatic Transmission Fluid Dipstick.
See “Checking the Fluid Level” underAutomatic
Transmission Fluid on page 5-25.G. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-30.
H. Remote Negative (−) Terminal (Marked GND).
SeeJump Starting on page 5-44.
I. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-38.
J. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-40.
K. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 5-112.
L. Battery. SeeBattery on page 5-43.
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Engine Oil
Checking Engine Oil
It is a good idea to check the 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.
SeeEngine Compartment Overview on page 5-12
for 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
If the oil is below the L mark for the L6 engine or
the cross-hatched area at the tip of the dipstick
for the V8 engine, add at least one quart/liter of the
recommended oil. This section explains what kind of
oil to use. For engine oil crankcase capacity, see
Capacities and Specifications on page 5-122.
Notice:Do not add too much oil. If the 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, the engine
could be damaged.
L6 Engine
V8 Engine
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Substitute Engine Oil: When adding oil to maintain
engine oil level, oil meeting GM Standard GM4718M
may not be available. You can add substitute oil
designated SAE 5W-30 with the starburst symbol at all
temperatures. Substitute oil not meeting GM Standard
GM4718M should not be used for an oil change.
Engine Oil Additives
Do not add anything to the oil. The recommended oils
with the starburst symbol that meet GM standards 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 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 3-48. 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
lter 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 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 the
last oil change. Remember to reset the oil life system
whenever the oil is changed.
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