service indicator CHEVROLET AVALANCHE 2003 1.G User Guide

When It Is Time for New Tires
One way to tell when it's
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining. Some
commercial truck tires may
not have treadwear
indicators.
You need a new tire if any of the following statements
are true:
·You can see the indicators at three or more places
around the tire.
·You can see cord or fabric showing through the
tire's rubber.
·The tread or sidewall is cracked, cut or snagged
deep enough to show cord or fabric.
·The tire has a bump, bulge or split.
·The tire has a puncture, cut or other damage that
can't be repaired well because of the size or
location of the damage.
Buying New Tires
To ®nd out what kind and size of tires you need, look at
the Certi®cation/Tire label.
The tires installed on your vehicle when it was new had
a Tire Performance Criteria Speci®cations (TPC
Spec) number on each tire's sidewall. When you get
new tires, get ones with that same TPC Spec number.
That way your vehicle will continue to have tires
that are designed to give proper endurance, handling,
speed rating, traction, ride and other things during
normal service on your vehicle. If your tires have an
all-season tread design, the TPC number will be
followed by an ªMSº (for mud and snow).
5-64

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 5-15for information on resetting the system.
An Emission Control Service.
Lubricate chassis components with each engine oil
and ®lter change.
Lubricate the front suspension, ball joints, steering
linkage, transmission shift linkage and parking brake
cable guides. Ball joints should not be lubricated unless
their temperature is 10ÉF (-12ÉC) or higher, or they
could be damaged.
See the mileage intervals following for additional
services that may be performed with an engine oil
change and chassis lubrication. 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.
7,500 Miles (12 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
15,000 Miles (25 000 km)
qInspect engine air cleaner ®lter or change indicator (if
equipped). If necessary, replace the ®lter. If vehicle is
driven in dusty/dirty conditions, inspect ®lter or
change indicator (if equipped) at every engine oil
change. See
Engine Air Cleaner/Filter on page 5-20for more information.An Emission Control Service.
(See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
22,500 Miles (37 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
30,000 Miles (50 000 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
6-6

qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
qReplace fuel ®lter.An Emission Control Service. (See
footnote ².)
qReplace engine air cleaner ®lter on vehicles without
a restriction indicator. If equipped with a change
indicator, inspect the indicator. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect the change indicator (if equipped) at every
engine oil change. See
Engine Air Cleaner/Filter on
page 5-20for more information.An Emission
Control Service. (See footnote ².)
37,500 Miles (62 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
45,000 Miles (75 000 km)
qInspect engine air cleaner ®lter or change indicator (if
equipped). If necessary, replace the ®lter. If vehicle is
driven in dusty/dirty conditions, inspect ®lter or
change indicator (if equipped) at every engine oilchange. See
Engine Air Cleaner/Filter on page 5-20for more information.An Emission Control Service.
(See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
50,000 Miles (83 000 km)
qChange automatic transmission ¯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.
If you do not use your vehicle under any of these
conditions, change the ¯uid and ®lter at 100,000 miles
(166 000 km).
qChange transfer case ¯uid.
6-7

52,500 Miles (87 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
60,000 Miles (100 000 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
qReplace fuel ®lter.An Emission Control Service. (See
footnote ².)
qReplace engine air cleaner ®lter on vehicles without
a restriction indicator. If equipped with a change
indicator, inspect the indicator. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect the change indicator (if equipped) at every
engine oil change. See
Engine Air Cleaner/Filter on
page 5-20for more information.An Emission
Control Service. (See footnote ².)
qInspect Evaporative Control System. Check all fuel
and vapor lines and hoses for proper hook-up,
routing and condition. Check that the purge valve
works properly, if equipped. Replace as needed.
An
Emission Control Service. (See footnote ².)
67,500 Miles (112 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
75,000 Miles (125 000 km)
qInspect engine air cleaner ®lter or change indicator (if
equipped). If necessary, replace the ®lter. If vehicle is
driven in dusty/dirty conditions, inspect ®lter or
change indicator (if equipped) at every engine oil
change. See
Engine Air Cleaner/Filter on page 5-20for more information.An Emission Control Service.
(See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
6-8

82,500 Miles (137 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
90,000 Miles (150 000 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qReplace fuel ®lter.
An Emission Control Service. (See
footnote ².)
qReplace engine air cleaner ®lter on vehicles without
a restriction indicator. If equipped with a change
indicator, inspect the indicator. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect the change indicator (if equipped) at every
engine oil change. See
Engine Air Cleaner/Filter on
page 5-20for more information.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote +.)
97,500 Miles (162 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for 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 transmission ¯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 transmission ¯uid, change
both the ¯uid and ®lter.
6-9

Light (cont.)
Low Fuel Warning.......................................3-45
Malfunction Indicator....................................3-41
Passenger Air Bag Status Indicator................3-34
Safety Belt Reminder...................................3-33
Security.....................................................3-44
Tow/Haul Mode...........................................3-45
Traction Off................................................3-38
Listening to a DVD.........................................3-89
Loading Your Vehicle for Off-Road Driving..........4-20
Loading Your Vehicle.......................................4-51
Locking Rear Axle...........................................4-11
Lockout Protection..........................................2-12
Locks............................................................. 2-8
Delayed Locking........................................... 2-8
Door........................................................... 2-7
Lockout Protection.......................................2-12
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-11
Loss of Control...............................................4-18
LOW COOLANT LEVEL..................................3-58
Low Fuel Warning Light...................................3-45
Luggage Carrier..............................................2-60
Lumbar........................................................... 1-3
Power Controls............................................. 1-3M
Maintenance and Cleaning...............................2-73
Maintenance, Normal Replacement Parts..........5-108
Maintenance Schedule.....................................6-10
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-11
At Least Once a Year..................................6-12
At Least Twice a Year..................................6-11
Brake System Inspection..............................6-16
Engine Cooling System Inspection.................6-16
Exhaust System Inspection...........................6-15
Fuel System Inspection................................6-15
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 MaintenanceInspections......6-15
Part D - Recommended Fluids and Lubricants....6-17
Part E - Maintenance Record........................6-19
Scheduled Maintenance................................. 6-5
Steering and Suspension Inspection...............6-15
Transfer Case and Front Axle (Four-Wheel
Drive) Inspection......................................6-16
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-67
Making Turns.................................................4-65
Malfunction Indicator Light................................3-41
9

P
Park (P)........................................................2-40
Shifting Into................................................2-40
Shifting Out of............................................2-42
Parking Brake and Automatic Transmission
Park (P) Mechanism Check...........................6-14
Parking on Hills..............................................4-66
Parking.........................................................2-39
Brake........................................................2-39
Over Things That Burn.................................2-43
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-10
Part C - Periodic MaintenanceInspections..........6-15
Part D - Recommended Fluids and Lubricants....6-17
Part E - Maintenance Record...........................6-19
Passenger Air Bag Indicator.....................2-48, 2-51
Passenger Air Bag Status Indicator...................3-34
PASSENGER DOOR AJAR..............................3-62
Passenger Sensing System..............................1-62
Passing.................................................4-16, 4-65
Passlock
ž......................................................2-26
Personalization Button.....................................3-50
Personalization, Climate Controls......................3-29
Plan Ahead When Possible................................ 7-8
Playing a Compact Disc..........................3-74, 3-85
Playing a Speci®c Loaded Compact Disc............3-86
Playing the Radio...................................3-66, 3-77
Power Steering...............................................4-14
Power...........................................................3-19Accessory Outlets........................................3-19
Door Locks.................................................. 2-8
Electrical System.........................................5-97
Lumbar Controls........................................... 1-3
Seat............................................................ 1-2
Steering Fluid.............................................5-36
Windows....................................................2-24
Programmable Automatic Door Locks.................. 2-8
Programming the HomeLink
žTransmitter...........2-56
Puddle Lamps................................................3-15
Q
Questions and Answers About Safety Belts.........1-14
R
Radio Data System (RDS).......................3-65, 3-76
Radio Messages.............................................3-71
Radios..........................................................3-64
Care of Your CD and DVD Player................3-103
Care of Your CDs and DVDs.......................3-103
Radio with CD............................................3-65
Radio with Six-Disc CD................................3-76
Rear Seat Audio..........................................3-99
Setting the Time..........................................3-64
Theft-Deterrent..........................................3-101
Understanding Reception............................3-102
RDS Messages......................................3-70, 3-82
11

Using Cleaner on Fabric..................................5-89
Using HomeLinkž...........................................2-58
Using Song List Mode.....................................3-88
Using the Recovery Hooks...............................4-47
V
Vehicle Identi®cation........................................5-96
Number (VIN).............................................5-96
Service Parts Identi®cation Label...................5-96
Vehicle Personalization....................................2-85
Memory Seat..............................................2-85
Vehicle Storage..............................................5-42
Vehicle............................................................ 4-6
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-51
Symbols......................................................... iv
Vehicles with Gray Body-Side Cladding.....5-52, 5-55
Vehicles with Gray Body-Side Cladding..............5-58
Vehicles with no Body±Side Cladding........5-54, 5-56
Ventilation Adjustment......................................3-28
Video Screen.................................................3-93
Visors...........................................................2-24
Voltmeter Gage..............................................3-36
W
Warning Lights, Gages and Indicators................3-30
Warnings.......................................................3-57
DIC Warnings and Messages........................3-57
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle......................................5-91
Weatherstrip Lubrication...................................6-12
Weight of the Trailer Tongue.............................4-62
Weight of the Trailer........................................4-61
What Kind of Engine Oil to Use........................5-17
What to Add..................................................5-40
What to Do with Used Oil................................5-19
What to Use..........................5-25, 5-37, 5-38, 5-49
Wheels..........................................................5-67
Alignment and Tire Balance..........................5-67
Replacement...............................................5-67
When to Add Engine Oil..................................5-16
When to Change Engine Oil (GM Oil Life
System).....................................................5-18
When to Check and Change............................5-22
When to Check Lubricant.................................5-49
When to Check Power Steering Fluid................5-37
16