cooling PONTIAC GRAND AM 2003 User Guide

Heater and radiator hoses, and other engine
parts, can be very hot. Don't touch them. If you
do, you can be burned.
Don't run the engine
if there is a leak. If you
run
the engine, it could lose all coolant. That
could cause an engine fire, and you could be
burned. Get any leak fixed before you drive
the
vehicle.
The coolant level should
be at or above the FULL
COLD mark. If it isn't, you may have a leak at the
pressure cap or in the radiator hoses, heater hoses,
radiator, water pump or somewhere else in the cooling
system.
If there seems to be no leak, with the engine on, check
to see
if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running.
If they aren't, your vehicle needs service.
Notice: Engine damage from running your engine
without coolant
isn't covered by your warranty.
5-30

Notice: When adding coolant, it is important that
you use only
DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL
is added to
the system, premature engine, heater core or
radiator corrosion may result.
In addition, the engine
coolant will require change sooner
- at 30,000 miles
(50 888 km) or 24 months, whichever occurs first.
Damage caused by the use of coolant other
than DEX-COOL@ is not covered by your new vehicle
warranty.
How to Add Coolant to the Coolant
Surge Tank
Nofice: This vehicle has a specific coolant fill
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
If you haven’t found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level isn’t at or above the
FULL
COLD mark, add a 50/50 mixture of clean, drinkable
water
and DEX-COOL@ coolant at the coolant
surge tank, but be sure the cooling system, including
the coolant surge tank pressure cap, is cool before
you
do it. See Engine Coolant on page 5-23 for more
information.
5-31

If no coolant is visible in the surge tank, add coolant as
follows:
Steam and scalding liquids from a hot cooling
system can
blow out and burn you badly. They
are under pressure, and
if you turn the radiator
pressure cap
-- even a little -- they can come
out at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap to cool if you ever have
to turn the pressure cap.
5-32

1 L% 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 wouldn’t get the overheat warning.
Your engine could catch fire and you or others
could be burned. Use a
50/50 mixture of clean,
drinkable water and DEX
COOL@ coolant.
Notice: In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts. Use the recommended coolant and the proper
coolant xture.
-
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and
it will burn if the engine parts are hot
enough. Don’t spill coolant on a hot engine.
5-33

Park the vehicle on a level surface.
You can remove the coolant surge tank pressure
cap when the cooling system, including the coolant
surge tank pressure cap and upper radiator
hose, is no longer hot. Turn the pressure cap slowly
counterclockwise (left) about two
or two and
one-half turns.
If you hear a hiss, wait for that to
stop. This will allow any pressure still left to
be vented out the discharge hose.
2. Then keep turning the
pressure cap slowly, and remove
it.
5-34

3. Then fill the coolant surge tank with the proper
mixture, to the hash mark on the label. Wait
about five minutes, then check to see
if the level is
below the hash mark. If the level is below the
hash mark, add additional coolant to bring the level
up to the hash mark. Repeat this procedure until
the level remains constant at the hash mark
for at least five minutes.
4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the
engine cooling fans.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level
is lower than
the FULL
COLD mark, add more of the proper
mixture to the coolant surge tank until the
level reaches the FULL COLD mark.
5-35

Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory
to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However,
if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset.
If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer
if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new ~hppl shnulc! hae the qqme inauj-carryin~
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new
GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle. Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous.
It could affect the braking and
handling
of your vehicle, make your tires lose
air and make you lose control. You could have a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice: The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
See
Changing a flat Tire on page 5-62 for more
information.
5-59

Engine Compartment Fuse Block
The engine compartment fuse block is located on the
driver’s side
of the engine compartment, near the
battery.
.
Fuse
1
2
Usage
Ignition Switch
Right Electrical Center-Fog Lamps,
Radio, Body Function Control
Module, Interior Lamps Fuse
3
4
5
6
7
8
Relays
9
10
11
12
13
14
15 Usage
Left Electrical Center-Stop Lamps,
Hazard Lamps, Body Function
Control Module, Cluster, Climate
Control System
Anti-Lock Brakes
Left Electrical Center-Power Seats,
Power Mirrors, Door Locks, Trunk
Release, Audio Amplifier, Remote
Keyless Entry
Not Used Ignition Switch
Cooling Fan
#I
Usage
Rear Defog
Not Used
Starter
Cooling Fan #1
HVAC Blower (Climate Control)
Cooling Fan #2
Cooling Fan
5-84

Relays 16
17
18
19
20
21 22
Fuses 23-32
33
34
35
36
37
3e
39
40 Usage
Air Conditioning Compressor
Not Used
Fuel Pump
Automatic Headlamp System
Automatic Headlamp System
Horn
Daytime Running Lamps (DRL)
Usage
Spare Fuse Holder
Rear Defog
Accessory Power Outlets,
Cigarette Lighter
Generator
Not Used
Air Conditioning Compressor, Body
Function Control Module
Powertrain Control Module (PCM)
Anti-Lock Brakes (ABS)
At Itnmatir- TrQncQvlo , l,..."l, IULIV I I UI I"cIt\I"
Fuses
41
42
43
44
45 46
47
48 49 50
51 52
53
54
55 56
57 Usage
Ignition
System
Back-up Lamps, Brake Transaxle
Shift Interlock
Horn PCM Parking Lamps
Climate Control System,
Air Conditioning
Canister Vent Valve, Exhaust
Oxygen Sensors
Fuel Pump, injectors
Not Used
Right Headlamp
Left Headlamp
Cooling Fan
#2
HVAC Blower (Climate Control)
Crank
Coolina Fan #2 Ground
Fuse Puller for Mini Fuses
Not Used
5-85

Capacities and Specifications
All capacities are approximate. When adding, be sure to fill to the appropriate level or as recommended in
this manual.
Capacities
I Capacities
Application
0.6 kg 1.4
Ibs.
Metric
English
Air Conditioning Refrigerant R134a
Use Refrigerant Oil, R134a Systems
Automatic Transaxle
Complete Overhaul
9.0 L
9.5 quarts
Cooling System
2.2L
L4 t Engine
3400 V6 Engine 8.6 quarts
13.6 quarts 8.2
L
12.9 L
Engine Oil with Filter
2.2L L4
t Engine
3400 V6 Engine 5.0 quarts
4.5 quarts 4.8 L
4.3 L
Fuel Tank
53.4 L 14.1
gallons
5-86