engine coolant PONTIAC GTO 2004 Owners Manual

Shift Speeds
{CAUTION:
If you skip a gear when you downshift, you
could lose control of your vehicle. You could
injure yourself or others. Don’t shift down
more than one gear at a time when you
downshift.
This chart shows when to shift to the next gear for the
best fuel economy.
Manual Transmission Recommended
Shift Speeds
1to2 2to3 3to4 4to5 5to6
16 mph
(25 km/h)22 mph
(35 km/h)30 mph
(48 km/h)40 mph
(65 km/h)50 mph
(80 km/h)
If your speed drops below 20 mph (32 km/h), or if the
engine is not running smoothly, you should downshift to
the next lower gear.
One to Four Shift Light
(Manual Transmission)
When this light comes on,
you can only shift from
FIRST (1) to FOURTH (4)
instead of FIRST (1) to
SECOND (2).
You must complete the shift into FOURTH (4) to turn off
this feature. This helps you get the best possible fuel
economy.
After shifting to FOURTH (4), you may downshift to a
lower gear if you prefer.
Notice:Forcing the shift lever into any gear except
FOURTH (4) when the 1 TO 4 SHIFT light comes
on may damage the transmission. Shift only from
FIRST (1) to FOURTH (4) when the light comes on.
This light will come on when:
•The engine coolant temperature is higher than
169°F (76°C),
•you are going 15 to 19 mph (24 to 31 km/h) and
•you are 21 percent throttle or less.
2-22

Instrument Panel Overview...............................3-2
Hazard Warning Flashers................................3-4
Other Warning Devices...................................3-4
Horn.............................................................3-4
Tilt Wheel.....................................................3-5
Turn Signal/Multifunction Lever.........................3-5
Exterior Lamps.............................................3-12
Interior Lamps..............................................3-15
Accessory Power Outlets...............................3-17
Ashtrays and Cigarette Lighter........................3-18
Climate Controls............................................3-19
Climate Control System.................................3-19
Outlet Adjustment.........................................3-22
Warning Lights, Gages, and Indicators............3-23
Instrument Panel Cluster................................3-24
Speedometer...............................................3-25
Tachometer.................................................3-25
Safety Belt Reminder Light.............................3-25
Air Bag Readiness Light................................3-26
Charging System Light..................................3-27
Brake System Warning Light..........................3-27Anti-Lock Brake System Warning Light.............3-28
Engine Coolant Temperature Gage..................3-28
Malfunction Indicator Lamp.............................3-29
Oil Pressure Light.........................................3-32
Change Engine Oil Light................................3-33
Security Light...............................................3-33
Fog Lamp Light............................................3-33
Highbeam On Light.......................................3-33
Daytime Running Lamps Indicator Light...........3-34
Service Vehicle Soon Light............................3-34
Fuel Gage...................................................3-35
Trip Computer................................................3-36
Audio System(s).............................................3-42
Setting the Time...........................................3-42
Radio with Six-Disc CD.................................3-43
Theft-Deterrent Feature..................................3-52
Audio Steering Wheel Controls.......................3-53
Radio Reception...........................................3-54
Care of Your CDs.........................................3-54
Care of Your CD Player................................3-54
Backglass Antenna.......................................3-55
Section 3 Instrument Panel
3-1

Anti-Lock Brake System
Warning Light
To ensure that the warning
light is working, the symbol
is displayed for a short
time when the ignition is
turned to ON.
If the light doesn’t come on then, have it fixed so it will
be ready to warn you if there is a problem.
If there is a malfunction of the anti-lock brake system,
the symbol will illuminate and ABS Fault will appear
on the trip computer display. See your dealer for service.
The car’s brake system will still operate conventionally,
only the anti-lock operation is impaired.
The ABS Fault message will remain until the MODE
button on the trip computer is pressed, but the symbol
will remain until the problem is fixed.
Engine Coolant Temperature Gage
The temperature gage
shows the engine coolant
temperature when the
ignition is on.
If the gage pointer moves into the red area, the light
comes on and you hear a chime, your engine is too hot!
It means that your engine coolant has overheated.
If you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
3-28

Trip Computer Warning Messages
Cruise Control
The CRUISE light along
with the Cruise Enabled
message on the trip
computer display will come
on whenever you set
your cruise control.
SeeTurn Signal/Multifunction Lever on page 3-5.
Engine Coolant Temperature Warning:If the Engine
Temp Hot message in the trip computer display
comes on while driving, it indicates that the engine
coolant temperature is dangerously hot. You should stop
the vehicle as soon as it is safe to do so. The Engine
Temp Hot message is displayed until the MODE button
on the trip computer switch is pressed. The message
then reverts to the original trip computer display
with a small over temperature symbol on the left. The
symbol will remain until the problem is fixed. SeeEngine
Overheating on page 5-28.
Low Coolant Warning:If the Low Coolant message in
the trip computer comes on while driving, it indicates
that the engine coolant level is dangerously low.You should check the level as soon as possible, see
Engine Coolant on page 5-25. The Low Coolant
message is displayed until the MODE button on the trip
computer switch is pressed. The message then
reverts to the original trip computer display with a small
low coolant symbol on the left. The symbol will remain
until the problem is fixed.
Low Traction:If the Low Traction message appears in
the trip computer display while driving, it indicates
that the traction control system has sensed that your
vehicle requires help with road grip and that the system
is actively working to stop any wheel spin. The Low
Traction message is displayed for about one second.
The message then reverts to the original trip computer
display with a small low traction symbol on the left.
The symbol will remain as long as the low traction
situation exits. SeeTraction Control System (TCS)
on page 4-8.
Traction Off:If the Traction Ctrl Off message in the trip
computer display comes on while driving, without the
traction control being turned off by the driver, it indicates
the traction control system is not working and you
should see your vehicle dealer. The Traction Ctrl Off
message is displayed for two seconds. The message
then reverts to the original trip computer display
with a small TRAC OFF symbol on the right. The symbol
will remain until the problem is fixed. SeeTraction
Control System (TCS) on page 4-8.
3-41

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
Your Vehicle..............................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specifications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.......................5-9
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Manual Transmission Fluid.............................5-23
Hydraulic Clutch...........................................5-24
Engine Coolant.............................................5-25
Engine Overheating.......................................5-28
Cooling System............................................5-31
Power Steering Fluid.....................................5-36Windshield Washer Fluid................................5-37
Brakes........................................................5-38
Battery........................................................5-41
Jump Starting...............................................5-42
Bulb Replacement..........................................5-47
Halogen Bulbs..............................................5-47
Headlamps..................................................5-47
Front Turn Signal and Parking Lamps..............5-49
Rear Turn Signal, Stoplamps and
Back-Up Lamps........................................5-49
Replacement Bulbs.......................................5-50
Windshield Wiper Blade Replacement..............5-50
Tires..............................................................5-51
Inflation - Tire Pressure.................................5-58
Tire Inspection and Rotation...........................5-62
When It Is Time for New Tires.......................5-64
Buying New Tires.........................................5-65
Uniform Tire Quality Grading..........................5-66
Wheel Alignment and Tire Balance..................5-67
Wheel Replacement......................................5-68
Tire Chains..................................................5-69
If a Tire Goes Flat........................................5-70
Changing a Flat Tire.....................................5-71
Compact Spare Tire......................................5-77
Section 5 Service and Appearance Care
5-1

Checking Things Under
the Hood
{CAUTION:
An electric fan under the hood can start up
and injure you even when the engine is not
running. Keep hands, clothing and tools away
from any underhood electric fan.
{CAUTION:
Things that burn can get on hot engine parts
and start a re. These include liquids like fuel,
oil, coolant, brake uid, windshield washer and
other uids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or spill things that will burn onto a hot engine.
5-10

A. Engine Compartment Fuse Block. See “Engine
Compartment Fuse Block” underFuses and Circuit
Breakers on page 5-87.
B. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-37.
C. Battery. SeeBattery on page 5-41.
D. Engine Oil Dipstick. SeeEngine Oil on page 5-13.
E. Engine Oil Fill Cap. SeeEngine Oil on page 5-13.
F. Automatic Transmission Dipstick (If Equipped).
SeeAutomatic Transmission Fluid on page 5-19.
G. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-36.
H. Brake Fluid Reservoir. SeeBrakes on page 5-38.
I. Hydraulic Clutch Fluid Reservoir (If Equipped). See
Hydraulic Clutch on page 5-24.
J. Engine Coolant Reservoir. SeeEngine Coolant on
page 5-25.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-18.Engine Oil
If the Check Oil message appears on the trip computer
display, it means you need to check your engine oil
level right away.
For more information, seeOil Pressure Light on
page 3-32.
You should check your engine oil level regularly; this is
an added reminder.
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.
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.
5-13

Engine Coolant
The cooling system in your vehicle is filled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-28.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will do the following:
•Give freezing protection down to−34°F (−37°C)
•Give boiling protection up to 265°F (129°C)
•Protect against rust and corrosion
•Help keep the proper engine temperature
•Let the warning lights and gages work as they
should
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-25

What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which won’t damage
aluminum parts. If you use this coolant mixture,
you don’t need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and the proper coolant.Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
5-26

Checking Coolant
The coolant surge tank is located in the engine
compartment on the driver’s side of the vehicle. See
Engine Compartment Overview on page 5-12for more
information on location.
{CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The coolant level should be checked at least weekly, by
looking at the level on the coolant reservoir when the
engine is cold. The vehicle must be on a level surface.
When your engine is cold, the coolant level should
be at or slightly above the COLD FILL mark, at
the center weld joint. The level rises when the engine is
running and drops when the engine cools down. If
the level falls below the weld joint, the coolant should
be added to a little over the mark. Do not overfill,
as coolant requires space to expand when warmed up.
If the Low Coolant message on the trip computer
display comes on and stays on, it means you’re low on
engine coolant. You should check the level as soon
as possible. You may have to check the coolant level
when it is hot. SeeEngine Overheating on page 5-28.
5-27