check engine PONTIAC GRAND PRIX 2003 Owner's Guide

Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the coolant recovery tank, but be
careful not to spill it.
If the coolant recovery tank is completely empty, add
coolant to the radiator. See Engine Overheating
on page 5-33.
Turning -.le radiator pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn
you badly.
With the coolant recovery tank,
you will almost never have to add coolant at
the radiator. Never turn the radiator pressure
cap
-- even a little -- when the engine and
radiator are hot. 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.
Occasionally check the coolant level in the radiator.
For information on how to add coolant to the radiator,
see Cooling System
on page 5-36.
5-32

He !r : I r8 r hoses, ar 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.
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. See “Overheated Engine Protection Operating
Mode’’
in the Index for information on driving to a
safe place
in an emergency.
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
(50 000 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
Recovery Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the COLD mark, add a
50/50 mixture of clean,
drinkable water and DEX-COOL@ engine coolant at
the coolant recovery tank. See
Engine Coolant on
page 5-30 for more information.
5-38

Power Steering Fluid
12. Then replace the pressure cap. At any time during
this procedure
if coolant begins to flow out of the
filler 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. The power
steering fluid reservoir is located in the
engine compartment next to the engine coolant recovery
tank. In the 3800 V6 (Code
K) engine and the 3800 V6
Supercharged (Code
I) engine, the power steering
fluid reservoir sits low in the engine compartment. See
Engine Compartment Overview on page
5- 12.
5-46

When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluid
unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
couid indicate a problem. Have the system inspected
and repaired. See Engine Compartment Overview
on page
5-12 for reservoir location.
How to Check Power Steering Fluid
Turn the key off , let the engine compartment cool down,
wipe the cap and the top of the reservoir clean, then
unscrew the cap and wipe the dipstick with a clean rag.
Replace the cap and completely tighten it. Then remove
the cap again and look at the fluid level on the dipstick.
The level should be at the
C (3100 V6 engine)
or
COLD (3800 V6 and
3800 V6 Supercharged
engines) mark.
If
necessary, add only
enough fluid to bring the
level up to the mark.
3800 V6 or 3800 V6 Supercharged Engine
When the engine compartment is hot, the level should
be at the
H (3100 V6 engine) or HOT (3800 V6 and
3800 V6 Supercharged engines) mark.
If the fluid is at
the ADD mark, you should add fluid.
What to Use
To determine what kind of fluid to use, see Part D:
Recommended Fluids and Lubricants on page 6-15.
Always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.
3100 V6 Engine
5-47

Notice: If the other system isn’t a 12-volt system
with a negative ground, both vehicles can be
damaged.
1. Check the other vehicle. It must have a 12-volt
battery with a negative ground system.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren’t touching
each other. If they are, it could cause a ground
connection you don’t want. You wouldn’t be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles involved in
the jump start procedure. Put an automatic
transaxle in PARK
(P) or a manual transaxle in
NEUTRAL before setting the parking brake.
Notice: If you leave your radio on, it could be badly
damaged. The repairs wouldn’t be covered by
your warranty.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or in the accessory power outlet. Turn
off
the radio and all lamps that aren’t needed. This will
avoid sparks and help save both batteries. And it
could save your radio!
4. Open the hoods and locate the batteries. Find the
positive
(+) and negative (-) terminal locations on
each vehicle. You will not need to access your
battery for jump starting. Your vehicle has
a remote
positive
(+) jump starting terminal for that purpose.
The terminal is located in the engine compartment
on the passenger’s side of the vehicle, near
the diagonal cross brace. See Engine Compartment
Ovewiew
on page 5-72 for more information on
location.
5-54

5. Check that the jumper cables don’t have loose or
missing insulation.
If they do, you could get a
shock. The vehicles could be damaged too. Don’t connect positive
(+) to
negative (-), or you’ll get a
short that would damage the battery and maybe
other parts, too. And don’t connect the negative
(-)
cable to the negative (-) terminal on the dead battery
because this can cause sparks.
Before you connect the cables, here are some basic
things you should know. Positive
(+) will go to
positive
(+) or to a remote positive (+) terminal if the
vehicle has one. Negative will go to a heavy, unpainted
metal engine part or to a remote negative
(-) terminal
if the vehicle has one.
6. Connect the red positive (+) cable to the positive (+)
terminal location on the vehicle with the dead battery.
Use a remote positive
(+) terminal if the vehicle
has one.
5-56

Capacities and Specifications (cont’d)
T
Application
Engine Oil with Filter
31 00 V6 (Code J)
3800 V6 (Code K)
3800 V6 Supercharged (Code 1)
Capacities
English
4.3 quarts
4.3 quarts
4.3 quarts
Metric
4.1 L
4.1 L
4.1 L
Fuel Tank
All capacities are approximate. When adding fluid, be sure to fill to the appropriate level, as recommended in this
manual. Recheck fluid level after filling. See
Pad D: Recommended Nuids and Lubricants on page 6-75 for more
information.
I 17.2 gallons 65 L
Engine Specifications
Wheel Nut
Engine Torque
Firing Order
Spark
Plug Gap VIN Code
3100 V6 J .060 inch 100 ft Ib
191
CID (3.1L LG8) (1.52mm) 1-2-3-4-5-6
(140 Nmm )
1-6-5-4-3-2
5-1 03

Section 6 Maintenance Schedule
Maintenance Schedule ...................................... 6-2
Introduction
................................................... 6-2
Your Vehicle and the Environment
.................... 6-2
Maintenance Requirements
.............................. 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
.... ..... 6.9
At Each Fuel Fill
........................................ 6-9
At Least Once a Month
................................... 6.9
At Least Twice a Year
................................... 6.10 At
Least Once a Year
................................... 6.10
Pari C: Periodic
Maintenance inspections ......... 6.13
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection
............................ 6-13
Exhaust System Inspection
............................ 6.13
Fuel System Inspection
.................................. 6.13
Engine Cooling System Inspection
................... 6.13
Throttle System Inspection
............................ -6-14
Brake System Inspection
................................ 6.14
Part D: Recommended Fluids and Lubricants
.... 6-15
Part
E: Maintenance Record ........................... 6.16
6- 1

Maintenance Schedule
Introduction
IMPORTANT:
KEEP ENGINE. OIL AT
THE PROPER
LEVEL AND CHANGE AS RECOMMENDED
I
n
Protection
Have you purchased the GM Protection Plan?
The Plan supplements your new vehicle warranties.
See your Warranty and Owner Assistance booklet
or your dealer for details.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment.
All recommended maintenance procedures
are important. Improper vehicle maintenance can
even affect the quality of the air we breathe. Improper
fluid levels or the wrong tire inflation can increase
the level of emissions from your vehicle.
To help protect
our environment, and to keep your vehicle in good
condition, please maintain your vehicle properly.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended fluids and lubricants as prescribed in
this manual are necessary to keep your vehicle in good
working condition. Any damage caused by failure to
follow recommended maintenance may not be covered
by warranty.
6-2

Part A: Scheduled Maintenance
Services
This part contains engine oil scheduled maintenance
which explains the engine oil life system and how
it indicates when to change the engine oil and filter.
Also, listed are scheduled maintenance services which
are to be performed at the mileage intervals specified.
Using Your Maintenance Schedule
We at General Motors want to keep your vehicle in good
working condition. But we don’t know exactly how
you’ll drive it. You may drive short distances only a few
times a week. Or you may drive long distances all
the time in very hot, dusty weather. You may use your
vehicle
in making deliveries. Or you may drive it to
work, to do errands or in many other ways.
Because of the different ways people use their vehicles,
maintenance needs may vary. You may need more
frequent checks and replacements.
So please read the
following and note how you drive.
If you have
questions on how to keep your vehicle in good condition,
see your dealer. This part tells
you the maintenance services you
should have done and when you should schedule them.
When you go to your dealer for your service needs,
you’ll know that GM-trained and supported service
people will perform the work using genuine GM parts.
The proper fluids and lubricants to use are listed in
Part D. Make sure whoever services your vehicle uses
these.
All parts should be replaced and all necessary
repairs done before you or anyone else drives the
vehicle.
This schedule is for vehicles that:
carry passengers and cargo within recommended
limits. You will find these on your vehicle’s
Tire-Loading Information label. See Loading
Your
Vehicle on page 4-35.
are driven on reasonable road surfaces within legal
use the recommended fuel. See Gasoline Octane
driving limits.
on page 5-5.
6-4