2003 CHEVROLET IMPALA maintenance reset

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 ªlearnsº 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 in¯ated 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 Ð but it doesn't replace normal tire maintenance.
See
Tires on page 5-61.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, see
If a Tire Goes
Flat on page 5-71.) Also check the tire pressure in all
four tires as soon as you can. SeeIn¯ation -- Tire
Pressure on page 5-62.
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.
Any time you adjust a tire's pressure, rotate your tires,
or have one or more tires repaired or replaced, you'll
need to reset (calibrate) the tire pressure monitor
system. You'll also need to reset the system whenever
you buy new tires and whenever the vehicle's battery
has been disconnected.
To reset (calibrate) the system: The tire pressure
monitor system can be reset two ways. With the ignition
position at ON, pull the interior lamps control to the
ON and OFF settings three times.
5-63

Tire Inspection and Rotation
Tires should be rotated every 7,500 miles (12 500 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. See
When It Is Time
for New Tires on page 5-66andWheel Replacement
on page 5-69for 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. See ªPart A: Scheduled
Maintenance Services,º in Section 6, for 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 in¯ation pressures as shown on the Tire-Loading
Information label.
Reset the Tire In¯ation Monitor System. See
Tire
Pressure Monitor System on page 5-63.
Make certain that all wheel nuts are properly tightened.
See ªWheel Nut Torqueº under
Capacities and
Speci®cations on page 5-103.
{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 ªChanging a Flat
Tireº in the Index.
5-65

Scheduled Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of
this vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of
this vehicle.
See
Part B: Owner Checks and Services on page 6-10andPart C: Periodic MaintenanceInspections on
page 6-14.
Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle 's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
Whenever the tires are rotated, the Tire In¯ation Monitor
System (if equipped) must be reset.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-15.
6-5

Engine Oil Scheduled Maintenance
Change engine oil and ®lter as indicated by the GM
Oil Life System (or every 12 months, whichever
occurs ®rst). Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and ®lter. This is
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A CHANGE ENGINE OIL message will
come on. Change your oil as soon as possible within
the next two times you stop for fuel. It is possible that, if
you are driving under the best conditions, the oil life
system may not indicate that an oil change 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 dealer has GM-trained
service people who will perform this work using
genuine GM parts and reset the system.It is also important to check your oil regularly and keep
it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed. See
Engine Oil on
page 5-16for information on resetting the system.
An Emission Control Service.
See the mileage intervals following for additional
services that may be performed with an engine oil
change. After the services are performed, record the
date, odometer reading and who performed the service
on the maintenance record pages in Part E of this
schedule.
6-6

Mirrors..........................................................2-35
Automatic Dimming Rearview with OnStarž.....2-35
Automatic Dimming Rearview........................2-34
Manual Rearview Mirror with OnStar
ž.............2-33
Manual Rearview Mirror................................2-33
Outside Convex Mirror.................................2-36
Outside Power Mirrors..................................2-36
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-18
Normal Maintenance Replacement Parts...........5-105
O
Odometer......................................................3-31
Off-Road Recovery..........................................4-12
OIL LIFE (GM Oil Life System Reset)................2-46
Oil ................................................................5-16
Engine.......................................................5-16
Pressure Message.......................................3-43
Older Children, Restraints................................1-31
Online Owner Center........................................ 7-3
OnStar
žPersonal Calling.................................2-38
OnStaržServices............................................2-37
OnStaržSystem.............................................2-37
OnStaržVirtual Advisor....................................2-38
Operation Tips................................................3-26ORIG. SET (Return to the Original Settings).......2-52
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-25
Outside.........................................................2-36
Convex Mirror.............................................2-36
Power Mirrors.............................................2-36
Overheated Engine Protection Operating Mode . . . 5-30
Overseas ± Customer Assistance........................ 7-4
Owners, Canadian............................................... ii
Owner's Information........................................7-11
P
Parade Dimming.............................................3-18
Park (P)........................................................2-30
Shifting Out of............................................2-30
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check...........................6-13
Parking on Hills..............................................4-39
Parking.........................................................2-27
Brake........................................................2-27
Over Things That Burn.................................2-31
Park(P).........................................................2-27
Shifting Into................................................2-27
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-10
Part C - Periodic MaintenanceInspections..........6-14
Part D - Recommended Fluids and Lubricants....6-16
Part E - Maintenance Record...........................6-17
10

Reclining Seatbacks.......................................... 1-4
Recreational Vehicle Towing.............................4-31
Remote Keyless Entry System, Operation............ 2-4
Remote Keyless Entry System............................ 2-3
Remote Trunk Release....................................2-11
Removing the Flat Tire and Installing the Spare
Tire ...........................................................5-76
Removing the Spare Tire and Tools...................5-73
Removing the Wheel Covers and the
Wheel Nut Caps..........................................5-75
Replacement Bulbs.........................................5-59
Replacing Brake System Parts..........................5-48
Replacing Restraint System Parts After a Crash . . 1-62
Reporting Safety Defects.................................7-10
Canadian Government..................................7-10
General Motors...........................................7-10
United States Government............................7-10
Reprogramming a Single HomeLink
žButton.......2-42
Resetting Defaults...........................................2-42
Resetting the Trip Computer.............................3-52
Restraint System Check...................................6-11
Checking Your Restraint Systems...................1-61
Replacing Restraint System Parts
After a Crash..........................................1-62
Restraint Systems...........................................1-61
Checking....................................................1-61
Replacing Parts...........................................1-62
Resynchronization............................................. 2-7Retained Accessory Power (RAP)......................2-19
Right Front Passenger Position, Safety Belts......1-23
Roadside......................................................... 7-5
Assistance Program....................................... 7-5
Rocking Your Vehicle To Get It Out...................4-30
Running Your Engine While You Are Parked.......2-32
S
Safety Belt.....................................................3-32
Reminder Light............................................3-32
Safety Belts...................................................5-88
Care of......................................................5-88
Center Front Passenger Position....................1-23
Driver Position............................................1-15
How to Wear Safety Belts Properly................1-14
Questions and Answers About Safety Belts.....1-13
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-28
Rear Seat Passengers.................................1-25
Right Front Passenger Position......................1-23
Safety Belt Extender....................................1-30
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone......................... 1-9
Safety Chains.................................................4-37
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-5
12