2004 PONTIAC GRAND PRIX cooling

How to Add Coolant to the Radiator
Notice:Your engine has a speci®c radiator ®ll
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
The radiator pressure cap is located on the passenger's
side of the vehicle in the front of the engine
compartment, near the battery and the diagonal cross
brace. See
Engine Compartment Overview on page 5-12for more information on location.You can remove the radiator pressure cap when the
cooling system, including the radiator pressure cap and
upper radiator hose, is no longer hot.
1. Turn the pressure cap slowly counterclockwise until
it ®rst stops. Don't press down while turning the
pressure cap.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.
5-37

10. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fans.
11. By this time, the coolant level inside the radiator
®ller neck may be lower. If the level is lower, add
more of the proper DEX-COOL
žcoolant mixture
through the ®ller neck until the level reaches
the base of the ®ller neck.12. Then replace the radiator pressure cap. At any time
during this procedure if coolant begins to ¯ow out of
the ®ller neck, reinstall the pressure cap. Be sure
the arrow on the pressure cap lines up like this.
13. Check the coolant in the recovery tank. The level in
the coolant recovery tank should be at the HOT
mark when the engine is hot or at the COLD mark
when the engine is cold.
5-41

Each new wheel should have the same load-carrying
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.
{CAUTION:
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 5-78for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can't know how it's been
used or how far it's been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
5-76

Capacities and Speci®cations
Please refer toPart D: Recommended Fluids and Lubricants on page 6-16for more information.
Capacities and Speci®cations
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a 2.4 lbs 1.1 kg
Automatic Transaxle
Pan Removal and Replacement
After Complete Overhaul7.4 quarts
10.0 quarts7.0 L
9.5 L
When draining/replacing converter or auxiliary cooler, more ¯uid may be needed.
Cooling System Including Reservoir
3800 V6 (Code K)
3800 V6 Supercharged (Code 1)11.2 quarts
11.2 quarts10.6 L
10.6 L
Engine Oil with Filter
3800 V6 (Code K)
3800 V6 Supercharged (Code 1)4.3 quarts
4.3 quarts4.1 L
4.1 L
Fuel Tank 17.0 gallons 64.0 L
Wheel Nut Torque 100 ft lb 140Y
All capacities are approximate. When adding ¯uid, be sure to ®ll to the appropriate level, as recommended in this
manual. Recheck ¯uid level after ®lling. See
Part D: Recommended Fluids and Lubricants on page 6-16for more
information.
5-104

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Maintenance Requirements..............................6-2
Your Vehicle and the Environment....................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-5
Part B: Owner Checks and Services................6-10
At Each Fuel Fill..........................................6-10
At Least Once a Month.................................6-10
At Least Twice a Year...................................6-11At Least Once a Year...................................6-11
Part C: Periodic Maintenance Inspections.........6-14
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection............................6-14
Exhaust System Inspection............................6-14
Fuel System Inspection..................................6-14
Engine Cooling System Inspection...................6-15
Throttle System Inspection.............................6-15
Brake System Inspection................................6-15
Part D: Recommended Fluids and Lubricants. . . .6-16
Part E: Maintenance Record...........................6-17
Section 6 Maintenance Schedule
6-1

90,000 Miles (150 000 km)
qReplace engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-22for more information.An Emission Control Service.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-16.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +.)
qReplace passenger compartment air ®lter. If you
drive regularly under dusty conditions, the ®lter
may require replacement more often.
97,500 Miles (162 500 km)
qRotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +.)
100,000 Miles (166 000 km)
qInspect spark plug wires.An Emission Control
Service.
qReplace spark plugs.An Emission Control Service.
qChange automatic transaxle ¯uid and ®lter if the
vehicle is mainly driven under one or more of
these conditions:
þ In heavy city traffic where the outside
temperature regularly reaches 90ÉF (32ÉC) or
higher.
þ In hilly or mountainous terrain.
þ When doing frequent trailer towing.
þ Uses such as found in taxi, police or delivery
service.
qIf you haven't used your vehicle under severe service
conditions listed previously and, therefore, haven't
changed your automatic transaxle ¯uid, change both
the ¯uid and ®lter.
150,000 Miles (240 000 km)
qDrain, ¯ush and re®ll cooling system (or every
60 months since last service, whichever occurs ®rst).
See
Engine Coolant on page 5-26for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.
An Emission Control Service.
qInspect engine accessory drive belt.An Emission
Control Service.
6-9

Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the throttle pedal system for interference or
binding, and for damaged or missing parts. Replace
parts as needed. Replace any components that
have high effort or excessive wear.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. Check parking
brake adjustment. You may need to have your brakes
inspected more often if your driving habits or
conditions result in frequent braking.
6-15

Center High-Mounted Stoplamp (CHMSL)...........5-64
Chains, Tires..................................................5-77
CHANGE OIL SOON.......................................3-66
CHARGING SYSTEM FAILURE........................3-67
Check
Engine Light...............................................3-40
Check Engine Light.........................................3-40
CHECK GAS CAP..........................................3-67
CHECK TIRE PRESSURE...............................3-68
Checking Coolant............................................5-28
Checking Engine Oil........................................5-16
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-56
Chemical Paint Spotting...................................5-96
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-41
Older Children.............................................1-29
Securing a Child Restraint Designed for
the LATCH System...................................1-43
Securing a Child Restraint in a Rear
Seat Position...........................................1-43
Securing a Child Restraint in the Right
Front Seat Position...................................1-45
Top Strap...................................................1-39
Top Strap Anchor Location............................1-40
Where to Put the Restraint...........................1-38Cigarette Lighter.............................................3-24
Cleaning
Inside of Your Vehicle..................................5-90
Outside of Your Vehicle................................5-93
Underbody Maintenance...............................5-96
Weatherstrips..............................................5-93
Cleaning Aluminum Wheels..............................5-95
Cleaning Exterior Lamps/Lenses.......................5-94
Cleaning Fabric/Carpet....................................5-90
Cleaning Glass Surfaces..................................5-92
Cleaning Interior Plastic Components.................5-92
Cleaning Leather............................................5-92
Cleaning the Top of the Instrument Panel...........5-92
Cleaning Tires................................................5-95
Cleaning Vinyl................................................5-92
Cleaning Windshield and Wiper Blades..............5-94
Climate Control System...................................3-25
Outlet Adjustment........................................3-29
Compact Disc Messages..............3-99, 3-113, 3-128
Compact Spare Tire................................5-88, 5-89
Content Theft-Deferrent....................................2-14
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-38
Coolant
Engine Temperature Gage............................3-39
Engine Temperature Warning Light.................3-39
Heater, Engine............................................2-20
Cooling System..............................................5-32
Courtesy Lamps.............................................3-17
3