Page 289 of 448

A. Windshield Washer Fluid. See “Adding Washer
Fluid” underWindshield Washer Fluid on page 6-38.
B. Engine Coolant Recovery Tank. SeeEngine
Coolant on page 6-29.
C.Engine Air Cleaner/Filter on page 6-20.
D. Power Steering Fluid Reservoir (low in engine
compartment). SeePower Steering Fluid on
page 6-37.
E. Automatic Transmission Fluid Dipstick (If Equipped).
See “Checking the Fluid Level” underAutomatic
Transmission Fluid on page 6-21.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-15.
G. Radiator Pressure Cap. SeeCooling System on
page 6-27.H. Remote Negative (−) Terminal (GND). SeeJump
Starting on page 6-43.
I. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-15.
J. Remote Positive (+) Terminal. SeeJump Starting on
page 6-43.
K. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 6-39.
L.Engine Compartment Fuse Block on page 6-112.
M.Battery on page 0-0.
N. Hydraulic Clutch Fluid Reservoir (If Equipped).
SeeHydraulic Clutch on page 6-26.
6-13
Page 290 of 448
When you open the hood on the 5.3L engine, you will see the following:
6-14
Page 291 of 448

A.Engine Air Cleaner/Filter on page 6-20.
B. Air Filter Restriction Indicator (If Equipped).
SeeEngine Air Cleaner/Filter on page 6-20.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 6-38.
D. Engine Coolant Recovery Tank. SeeEngine Coolant
on page 6-29.
E. Automatic Transmission Fluid Dipstick (If Equipped).
See “Checking the Fluid Level” underAutomatic
Transmission Fluid on page 6-21.
F. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-15.
G. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-15.
H. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 6-39.
I.Battery on page 0-0.
J. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 6-37.
K.Engine Compartment Fuse Block on page 6-112.
L. Radiator Pressure Cap. SeeCooling System on
page 6-27.Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil level at each
fuel fill. 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 6-12
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 this is not done, 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.
6-15
Page 292 of 448
When to Add Engine Oil
If the oil is below the cross-hatched area (L), add at least
one quart/liter of the recommended oil. This section
explains what kind of oil to use. For engine oil crankcase
capacity, seeCapacities and Speci cations on page 6-118.Notice:Do not add too much oil. If the engine
has so much oil that the oil level gets above the
cross-hatched area that shows the proper operating
range, the engine could be damaged.
SeeEngine Compartment
Overview on page 6-12
for the location of the
engine oil fill cap.
Add enough oil to put the level somewhere in the proper
operating range. Push the dipstick all the way back in
when through. L4 and L5 Engines
V8 Engine
6-16
Page 293 of 448

What Kind of Engine Oil to Use
Look for three things:
•GM6094M
Use only an oil that meets GM Standard GM6094M.
•SAE 5W-30
SAE 5W-30 is best for the vehicle. These numbers
on an oil container show its viscosity, or thickness.
Do not use other viscosity oils such as SAE 20W-50.
•American Petroleum Institute (API) starburst symbol
Oils meeting these
requirements should have
the starburst symbol on
the container. This symbol
indicates that the oil has
been certified by the
American Petroleum
Institute (API).
Notice:Use only engine oil identi ed as meeting
GM 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
the vehicle warranty.
Cold Temperature Operation
If in an area of extreme cold, where the temperature
falls below−20°F (−29°C), use either an SAE 5W-30
synthetic oil or an SAE 0W-30 engine oil. Both provide
easier cold starting for the engine at extremely low
temperatures. Always use an oil that meets the required
specification, GM6094M. See “What Kind of Engine
Oil to Use” for more information.
6-17
Page 294 of 448

Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM Standard
GM6094M are all that is needed for good performance
and engine protection.
Engine oil system flushes are not recommended and
could cause engine damage not covered by the vehicle
warranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that indicates 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 is indicated can vary considerably.
For the oil life system to work properly, the system
must be reset every time the oil is changed.When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE OIL message comes on. SeeDIC Warnings
and Messages on page 4-37. Change the oil as soon
as possible within the next 600 miles (1 000 km). It is
possible that, if 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 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, the oil must be
changed at 3,000 miles (5 000 km) since the last oil
change. Remember to reset the oil life system whenever
the oil is changed.
6-18
Page 295 of 448

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 the oil is changed prior to a CHANGE OIL
message being turned on, reset the system.
To reset the Engine Oil Life system:
1. With the engine off, turn the ignition to ON/RUN.
2. Press and release the stem in the lower center
of the instrument cluster until the OIL LIFE
message is displayed.
3. Once the alternating OIL LIFE and RESET
messages appear, press and hold the stem
until several beeps sound. This confirms that
the oil life system has been reset.
4. Turn the key to LOCK/OFF.
If the CHANGE OIL message comes back on when the
vehicle is started, the engine oil life system has not
reset. Repeat the procedure. SeeDIC Warnings
and Messages on page 4-37.
What to Do with Used Oil
Used engine oil contains certain elements that can be
unhealthy for your skin and could even cause cancer.
Do not 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 dispose of 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. Recycle it by taking it to a
place that collects used oil.
6-19
Page 296 of 448

Engine Air Cleaner/Filter
The engine air cleaner/filter is located in the engine
compartment on the passenger’s side of the vehicle.
SeeEngine Compartment Overview on page 6-12
for more information on location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the MaintenanceII
intervals and replace it at the first oil change after
each 50,000 mile (80 000 km) interval. SeeScheduled
Maintenance on page 7-3for more information.
If you are driving in dusty/dirty conditions, inspect
the filter at each engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect or replace the engine air cleaner/filter, do the
following:
1. Unfasten the clips that hold the cover on and
remove the cover.
2. Lift out the engine air cleaner/filter.
3. Inspect or replace the air filter. SeeMaintenance
Replacement Parts on page 7-12to determine
which filter to use.
4. Reinstall the engine air cleaner/filter cover. Fasten
the clips to hold the cover in place.
6-20