2004 CHEVROLET IMPALA maintenance reset

Low Engine Oil Level Message
Your vehicle may be equipped with a low engine oil
level message.
This message is displayed for 60 seconds at the start of
each ignition cycle when the engine oil level is low.
Four chimes will also sound.
When the ignition is turned off, this message will be
displayed again for three seconds to remind you
that your engine oil level is low. Be sure to have your
vehicle serviced right away.
SeeEngine Oil on page 5-18on how to check the oil
level and for what type of oil to add.
Change Engine Oil Message
When this message comes on, it means that service is
required for your vehicle. It will appear for 60 seconds.
SeeScheduled Maintenance on page 6-4and
Engine Oil on page 5-18for more information.
Once the engine oil has been changed, the CHANGE
ENGINE OIL message must be reset. Until it is
reset, this message will be displayed for 60 seconds
each time you start the engine. For more information on
resetting the system, see “How to Reset the Change
Engine Oil Message” underEngine Oil on page 5-18. United States
CanadaUnited StatesCanada
3-47

Tire Pressure Monitor System
If your vehicle has the tire pressure monitor system,
it can alert you to a large change in the pressure of one
tire. The system “learns” the pressure at each tire
throughout the operating speed range of your vehicle.
The system normally takes between 45 and 90 minutes
of driving to learn the tire pressures. This time may
be longer depending on your individual driving habits.
Learning need not be accumulated during a single
trip. Once learned, the system will remember the tire
pressures until the system is recalibrated.
After the system has learned tire pressures with
properly inated tires, the LOW TIRE PRESSURE
message will come on if the pressure in one tire
becomes 12 psi (83 kPa) lower than the other three
tires. The tire pressure monitor system won’t alert you
if the pressure in more than one tire is low, if the system
is not properly calibrated, or if the vehicle is moving
faster than 70 mph (110 km/h).The tire pressure monitor system detects differences in
tire rotation speeds that are caused by changes in
tire pressure. The system can alert you about a low
tire — but it doesn’t replace normal tire maintenance.
SeeTires on page 5-64.
When the LOW TIRE PRESSURE message comes on,
you should stop as soon as you can and check all
your tires for damage. (If a tire is at, seeIf a Tire Goes
Flat on page 5-81.) Also check the tire pressure in all
four tires as soon as you can. SeeInation - Tire
Pressure on page 5-72.
The LOW TIRE PRESSURE message will also be
displayed (while the ignition is on) until you reset
(calibrate) the system.
Don’t reset the tire pressure monitor system without rst
correcting the cause of the problem and checking
and adjusting the pressure in all four tires. If you reset
the system when the tire pressures are incorrect,
the system will not work properly and may not alert you
when a tire is low.
5-73

Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
Any time you notice unusual wear, rotate your tires as
soon as possible and check wheel alignment. Also check
for damaged tires or wheels. SeeWhen It Is Time for
New Tires on page 5-76andWheel Replacement on
page 5-79for more information.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The rst rotation
is the most important. SeeScheduled Maintenance
on page 6-4for scheduled rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.
Don’t include the compact spare tire in your tire rotation.After the tires have been rotated, adjust the front and
rear ination pressures as shown on the Tire and
Loading Information label.
Reset the Tire Ination Monitor System. SeeTire
Pressure Monitor System on page 5-73.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” underCapacities and
Specications on page 5-110.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if you need to,
to get all the rust or dirt off. See “Changing a
Flat Tire” in the Index.
5-75

Scheduled Maintenance
When the CHANGE ENGINE OIL message comes on, it
means that service is required for your vehicle. Have your
vehicle serviced as soon as possible within the next
600 miles (1 000 km). It is possible that, if you are driving
under the best conditions, the engine oil life system may
not indicate that vehicle service is necessary for over a
year. However, your engine oil and lter must be changed
at least once a year and at this time the system must be
reset. Your GM Goodwrench dealer has GM-trained
service technicians who will perform this work using
genuine GM parts and reset the system.
If the engine oil life system is ever reset accidentally,
you must service your vehicle within 3,000 miles
(5 000 km) since your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil on page 5-18for information on the Engine
Oil Life System and resetting the system.When the change engine oil message appears, certain
services, checks and inspections are required.
Required services are described in the following for
“MaintenanceI” and “MaintenanceII.” Generally,
it is recommended that your rst service be
MaintenanceI, your second service be MaintenanceII
and that you alternate MaintenanceIand MaintenanceII
thereafter. However, in some cases, MaintenanceII
may be required more often.
MaintenanceI— Use MaintenanceIif the change
engine oil message comes on within ten months since
vehicle was purchased or MaintenanceIIwas
performed.
MaintenanceII— Use MaintenanceIIif the previous
service performed was MaintenanceI. Always use
MaintenanceIIwhenever the message comes on ten
months or more since the last service or if the message
has not come on at all for one year.
6-4

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. Reset oil life system. SeeEngine Oil on
page 5-18.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (k).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 5-25.An Emission Control Service. See footnote †.••
Rotate tires and check ination pressures and wear. SeeTires on page 5-64.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transaxle uid level and add uid as needed.•
Replace passenger compartment air lter (if equipped).See footnote (g).•
Inspect throttle system.See footnote (j).•
6-5

Message (cont.)
Service Traction System Warning...................3-43
Service Vehicle Soon...................................3-51
Traction Active............................................3-44
Trunk Ajar Warning......................................3-49
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) – Customer Assistance....................... 7-5
Mirrors
Automatic Dimming Rearview........................2-34
Automatic Dimming Rearview with OnStar
®.....2-34
Manual Rearview Mirror................................2-33
Manual Rearview Mirror with OnStar
®.............2-33
Outside Convex Mirror.................................2-36
Outside Power Mirrors..................................2-35
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-17
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-30
Off-Road Recovery..........................................4-12Oil
Engine.......................................................5-18
Pressure Message.......................................3-46
Supercharger, Engine...................................5-24
OIL LIFE (GM Oil Life System Reset)................2-45
Older Children, Restraints................................1-31
Online Owner Center........................................ 7-3
OnStar
®Personal Calling.................................2-37
OnStar®Services............................................2-37
OnStar®System.............................................2-36
OnStar®Virtual Advisor....................................2-37
Operation Tips................................................3-24
ORIG. SET (Return to the Original Settings).......2-51
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-24
Outside
Convex Mirror.............................................2-36
Power Mirrors.............................................2-35
Overheated Engine Protection Operating Mode . . . 5-32
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
Owner’s Information........................................7-13
10

Safety Belts (cont.)
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone......................... 1-9
Safety Chains.................................................4-40
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Head Restraints............................................ 1-6
Heated Seats............................................... 1-4
Manual........................................................ 1-2
Manual Lumbar............................................. 1-3
Reclining Seatbacks...................................... 1-4
Six-Way Power Seats.................................... 1-3
Split Folding Rear Seat.................................. 1-6
Securing a Child Restraint
Designed for the LATCH System...................1-46
Rear Seat Position......................................1-46
Right Front Seat Position..............................1-49
Security While You Travel.................................. 7-6
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-37
Message....................................................3-49
Publications Ordering Information...................7-12
Traction System Warning Message.................3-43
Vehicle Soon Message.................................3-51Service Bulletins.............................................7-12
Service Manuals.............................................7-12
Setting Preset Stations....................3-59, 3-70, 3-81
Setting the Time.............................................3-56
Setting the Tone (Bass/Treble)..........3-59, 3-70, 3-81
SETTINGS (Display Current Settings)................2-45
Sheet Metal Damage.......................................5-99
Shifting Into Park (P).......................................2-27
Shifting Out of Park (P)...................................2-30
Shoulder Belt Height Adjuster...........................1-17
Skidding........................................................4-14
Some Other Rainy Weather Tips.......................4-19
Special Fabric Cleaning Problems.....................5-95
Specications, Capacities...............................5-110
Speedometer..................................................3-30
Split Folding Rear Seat..................................... 1-6
Starting Your 3400 V6 Engine...........................2-18
Starting Your 3800 Series II V6 Engine..............2-19
Starting Your Engine.......................................2-18
Steering........................................................4-10
Steering Column Shift Lever.............................2-27
Steering in Emergencies..................................4-11
Steering Tips..................................................4-10
Steering Wheel Controls, Audio.........................3-93
Steering Wheel, Tilt Wheel................................. 3-7
Storage Areas
Center Console Storage Area........................2-42
Convenience Net.........................................2-42
13