2003 CHEVROLET TRAIL BLAZER Owners Manual

2. Then go to the front of the vehicle and release the
secondary hood release.
3. Lift the hood; release the hood prop from its
retainer and put the hood prop into the slot in
the hood.
Before closing the hood, be sure all ®ller caps are on
properly. Then lift the hood to relieve pressure on
the hood prop. Remove the hood prop from its slot in
the hood and return the prop to its retainer. Then pull the
hood down ®rmly to close. It will latch when dropped
from 6 to 8 inches (15 to 20 cm) without pressing on
the hood.
5-11

Engine Compartment Overview
When you open the hood on the L6 engine, you'll see the following:
5-12

A. Coolant Recovery Tank. SeeEngine Coolant on
page 5-24.
B. Engine Air Cleaner/Filter. See
Engine Air
Cleaner/Filter on page 5-20.
C. Windshield Washer Fluid Reservoir. See
Windshield
Washer Fluid on page 5-37.
D. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-36.
E. Automatic Transmission Dipstick. See
Automatic
Transmission Fluid on page 5-22.
F. Engine Oil Dipstick. See
Engine Oil on page 5-16.G. Radiator Pressure Cap. See
Radiator Pressure Cap
on page 5-26.
H. Engine Oil Fill Cap. See
Engine Oil on page 5-16.
I. Remote Negative (-) Terminal Marked GND.
See
Jump Starting on page 5-42.
J. Brake Master Cylinder. See
Brakes on page 5-38.
K. Battery. See
Battery on page 5-41.
L. Engine Compartment Fuse Block. See ªEngine
Compartment Fuse Blockº under
Fuses and Circuit
Breakers on page 5-89.
5-13

When you open the hood on the V8 engine, you'll see the following:
5-14

A. Coolant Recovery Tank. SeeEngine Coolant on
page 5-24.
B. Engine Air Cleaner/Filter. See
Engine Air
Cleaner/Filter on page 5-20.
C. Windshield Washer Fluid Reservoir. See
Windshield
Washer Fluid on page 5-37.
D. Engine Oil Dipstick. See
Engine Oil on page 5-16.
E. Automatic Transmission Dipstick. See
Automatic
Transmission Fluid on page 5-22.
F. Engine Oil Fill Cap. See
Engine Oil on page 5-16.G. Radiator Pressure Cap. See
Radiator Pressure Cap
on page 5-26.
H. Remote Negative (-) Terminal Marked GND.
See
Jump Starting on page 5-42.
I. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-36.
J. Brake Master Cylinder. See
Brakes on page 5-38.
K. Engine Compartment Fuse Block. See ªEngine
Compartment Fuse blockº under
Fuses and Circuit
Breakers on page 5-89.
L. Battery. See
Battery on page 5-41.
5-15

Engine Oil
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 a yellow ring
located in the engine
compartment toward the
passenger's side of
the vehicle. See
Engine
Compartment Overview on
page 5-12
for more
information on location.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.
L6 Engine
V8 Engine
5-16

When to Add Engine Oil
If the oil is at or below the L mark for the L6 engine or
the cross-hatched area at the tip of the dipstick for
the V8 engine, 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
Capacities and Speci®cations on
page 5-100.
Notice:Don't add too much oil. If your engine has
so much oil that the oil level gets above the F
mark 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.The engine oil ®ll cap is
located in the engine
compartment toward the
passenger's side of
the vehicle. See
Engine
Compartment Overview on
page 5-12
for more
information on location.
Be sure to ®ll it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.
5-17

What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identi®ed by
looking for the starburst symbol.
This symbol indicates that the oil has been certi®ed by
the American Petroleum Institute (API). Do not use
any oil which does not carry this starburst symbol.
If you choose to perform
the engine oil change
service yourself, be sure
the oil you use 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 certi®ed
for gasoline engines.
You should also use the proper viscosity oil for your
vehicle, as shown in the viscosity chart.
5-18