2004 PONTIAC GRAND PRIX check engine

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
·The key should turn to LOCK only when the
shift lever is in PARK (P).
·The key should come out only in LOCK.
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
·To check the parking brake's holding ability: With
the engine running and transaxle in NEUTRAL
(N), slowly remove foot pressure from the regular
brake pedal. Do this until the vehicle is held by the
parking brake only.
·To check the PARK (P) mechanism's holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Underbody Flushing Service
At least every spring, use plain water to ¯ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-13

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

E
Electrical System
Add-On Equipment......................................5-99
Fuses and Circuit Breakers...........................5-99
Headlamp Wiring.........................................5-99
Power Windows and Other Power Options......5-99
Windshield Wiper Fuses...............................5-99
Emergency Trunk Release Handle.....................2-11
Emissions Inspection and
Maintenance Programs.................................3-42
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-48
Check and Service Engine Soon Light............3-40
Coolant Heater............................................2-20
Coolant Temperature Gage...........................3-39
Coolant Temperature Warning Light................3-39
Coolant......................................................5-26
Cooling System Inspection............................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-31
Oil .............................................................5-16
Overheating................................................5-29
Starting......................................................2-19
Supercharger Oil.........................................5-21
Engine Coolant Level Check.............................6-10
Engine Cooling When Trailer Towing..................4-44
Engine Oil Additives........................................5-19Engine Oil Level Check...................................6-10
Engine Oil Scheduled Maintenance..................... 6-5
Enhanced Traction System (ETS)......................4-11
Warning Light.............................................3-38
Entry Lighting.................................................3-17
Express-Down Window....................................2-13
Extender, Safety Belt.......................................1-28
Exterior Lamp Control Lever.............................3-12
Exterior Lamps...............................................3-12
Exterior Lighting Battery Saver..........................3-16
F
Fan ..............................................................3-25
Filter
Engine Air Cleaner......................................5-22
Finding a PTY Station
(RDS and XMŸ).....................3-93, 3-104, 3-118
Finding a Station.........................3-91, 3-102, 3-116
Finish Care....................................................5-94
Finish Damage...............................................5-95
Flash-To-Pass Feature.....................................3-14
Flat Tire........................................................5-78
Flat Tire, Changing.........................................5-78
Fluid
Automatic Transaxle.....................................5-24
Power Steering...........................................5-42
Windshield Washer......................................5-43
FM Stereo....................................................3-130
Fog Lamp Light..............................................3-44
5

Folding Rear Seat............................................ 1-8
Following Distance..........................................4-41
Footnotes........................................................ 6-5
Front Reading Lamps......................................3-18
Front Seat Storage Net....................................2-37
Front Turn Signal, Parking and Fog Lamps.........5-62
Fuel
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-44
Gasoline Octane........................................... 5-4
Gasoline Speci®cations.................................. 5-5
System Inspection.......................................6-14
Fuses
Fuses and Circuit Breakers...........................5-99
Windshield Wiper.........................................5-99
G
Gage
Engine Coolant Temperature.........................3-39
Fuel..........................................................3-44
Speedometer..............................................3-33
Tachometer.................................................3-33
Gasoline......................................................... 5-4
Octane........................................................ 5-4
Speci®cations............................................... 5-5Glove Box.....................................................2-36
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-7
Headlamp
Aiming.......................................................5-56
Headlamp Wiring............................................5-99
Headlamps
Bulb Replacement.......................................5-59
Front Turn Signal, Parking and Fog Lamps.....5-62
Halogen Bulbs............................................5-59
Headlamps and Sidemarker Lamps................5-60
HEADLAMPS SUGGESTED.............................3-70
Head-Up Display (HUD)...................................3-19
Heated Seats................................................... 1-5
Highbeam On Light.........................................3-44
Highway Hypnosis...........................................4-26
Hill and Mountain Roads..................................4-26
Hitches..........................................................4-40
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-5
HOT COOLANT..............................................3-70
HOT ENGINE OIL. REDUCE SPEED................3-71
6

HOT TRANS FLUID........................................3-72
How to Add Coolant to the Coolant
Recovery Tank............................................5-35
How to Add Coolant to the Radiator..................5-37
How to Add Fluid............................................5-26
How to Check and Add Oil...............................5-22
How to Check Power Steering Fluid..................5-42
How to Check........................................5-24, 5-69
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-15
Hydroplaning..................................................4-22
I
If No Steam is Coming From Your Engine..........5-31
If Steam Is Coming From Your Engine...............5-30
If the HUD Image Is Not Clear.........................3-22
If the Light is Flashing.....................................3-41
If the Light Is On Steady.................................3-41
If You Are Stuck in Sand, Mud, Ice or Snow.......4-32
If You Can't See the HUD Image When the
Ignition Is On..............................................3-22
If You Do Decide To Pull A Trailer.....................4-38
If You're Caught in a Blizzard...........................4-30
Ignition Positions.............................................2-18
Ignition Transaxle Lock Check..........................6-13
Infants and Young Children, Restraints...............1-32
In¯ation -- Tire Pressure..................................5-69Inspection
Brake System.............................................6-15
Engine Cooling System................................6-15
Exhaust System..........................................6-14
Fuel System...............................................6-14
Part C - Periodic Maintenance.......................6-14
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-14
Throttle System...........................................6-15
Instrument Panel
Cluster.......................................................3-32
Overview..................................................... 3-2
Interior Lamps................................................3-16
Instrument Panel Brightness.............................3-16
Instrument Panel Fuse Block..........................5-100
J
Jump Starting.................................................5-49
K
KEY FOB BATTERY LOW...............................3-73
KEY IN IGNITION...........................................3-73
Key Lock Cylinders Service..............................6-11
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
7

Maintenance Schedule (cont.)
Brake System Inspection..............................6-15
Engine Cooling System Inspection.................6-15
Exhaust System Inspection...........................6-14
Fuel System Inspection................................6-14
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-10
Part C - Periodic Maintenance Inspections......6-14
Part D - Recommended Fluids
and Lubricants.........................................6-16
Part E - Maintenance Record........................6-17
Scheduled Maintenance................................. 6-5
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-14
Throttle System Inspection............................6-15
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-44
Making Turns.................................................4-42
Malfunction Indicator Light................................3-40
Manual Climate Control System........................3-25
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle................. 2-5
Message
DIC Warnings and Messages........................3-65Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico and
U.S. Virgin Islands) ± Customer Assistance....... 7-5
Mirrors
Manual Rearview Mirror................................2-33
Manual Rearview Mirror with OnStar
ž.............2-33
Outside Convex Mirror.................................2-34
Outside Power Mirrors..................................2-34
Mode............................................................3-25
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-18
Normal Maintenance Replacement Parts...........5-105
O
Odometer......................................................3-33
Off-Road Recovery..........................................4-16
Oil
Engine.......................................................5-16
Pressure Light.............................................3-43
Supercharger, Engine...................................5-21
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-3
OnStar
žPersonal Calling.................................2-36
OnStaržServices............................................2-35
9

OnStaržSystem.............................................2-35
OnStaržVirtual Advisor....................................2-36
Other Warning Devices...................................... 3-5
Outlet Adjustment............................................3-29
Outside
Convex Mirror.............................................2-34
Power Mirrors.............................................2-34
Overhead Console Reading Lamps....................3-18
Overhead Console..........................................2-36
Overheated Engine Protection Operating Mode.....5-30
Overseas ± Customer Assistance........................ 7-5
Owners, Canadian............................................... ii
Owner's Information........................................7-11
P
PARK LAMPS ON..........................................3-78
Park (P)
Shifting Into................................................2-28
Shifting Out of............................................2-30
Parking
Brake........................................................2-27
Over Things That Burn.................................2-30
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check...........................6-13
PARKING BRAKE ON.....................................3-78
Parking on Hills..............................................4-43Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-10
Part C - Periodic Maintenance Inspections..........6-14
Part D - Recommended Fluids and Lubricants....6-16
Part E - Maintenance Record...........................6-17
Passing.................................................4-16, 4-41
PASS-Key
žIII ................................................2-15
PASS-KeyžIII Operation..................................2-16
Performance Shifting with TAP-ShiftŸ................2-25
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape................................3-109
Playing a Compact Disc...............3-98, 3-111, 3-123
Playing a Speci®c Loaded
Compact Disc............................................3-124
Playing the Radio........................3-90, 3-101, 3-115
Power
Accessory Outlets........................................3-23
Door Locks.................................................. 2-8
Electrical System.........................................5-99
Lumbar Controls........................................... 1-5
Seat............................................................ 1-4
Steering Fluid.............................................5-42
Windows....................................................2-13
Power Steering...............................................4-14
Pretensioners, Safety Belt................................1-28
Programmable Automatic Door Locks.................. 2-9
10