2003 CHEVROLET TRAIL BLAZER service indicator

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.
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 5-55for 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 5-55for 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 5-55for proper rotation pattern and additional
information.(See footnote +.)
6-6

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.
qRotate tires. See
Tire Inspection and Rotation on
page 5-55for 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 5-55for 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
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 5-55for proper rotation pattern and additional
information.(See footnote +.)
6-7

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).
qAutomatic Transfer Case Only: Change transfer
case ¯uid.
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 5-55for 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 5-55for 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.)
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 5-55for proper rotation pattern and additional
information.(See footnote +.)
6-8

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 5-55for proper rotation pattern and additional
information.(See footnote +.)
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 5-55for 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 5-55for proper rotation pattern and additional
information.(See footnote +.)
6-9

Instrument Panel Brightness.............................3-18
Instrument Panel.............................................3-36
Cluster.......................................................3-36
Overview..................................................... 3-4
Interior Lamps................................................3-18
J
Jump Starting.................................................5-42
K
Key Lock Cylinders Service..............................6-13
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Lamps On Reminder.......................................3-16
Lamps...........................................................3-15
Exterior......................................................3-15
Interior.......................................................3-18
Lap-Shoulder Belt...................................1-14, 1-22
LATCH System...............................................1-40
Child Restraints...........................................1-40
Securing a Child Restraint Designed for the
LATCH System........................................1-42LATCH System (cont.)
Leaving Your Vehicle With the Engine
Running.....................................................2-30
Leaving Your Vehicle.......................................2-12
LEFT REAR DOOR AJAR................................3-63
Liftgate Rack System......................................2-47
Table.........................................................2-47
Liftgate Release..............................................2-13
Liftgate/Liftglass..............................................2-13
Liftglass/Liftgate..............................................2-13
Lighted Visor Vanity Mirror...............................2-16
Light.............................................................3-38
Air Bag Readiness.......................................3-38
Anti-Lock Brake System Warning...................3-42
Brake System Warning.................................3-41
Change Engine Oil......................................3-47
Charging System.........................................3-39
Check Gages Warning.................................3-49
Cruise Control.............................................3-48
Gate Ajar...................................................3-50
Low Fuel Warning.......................................3-51
Malfunction Indicator....................................3-43
Reduced Engine Power................................3-48
Safety Belt Reminder...................................3-38
Security.....................................................3-47
Service Four-Wheel-Drive Warning Light.........3-49
Loading Your Vehicle for Off-Road Driving..........4-16
Loading Your Vehicle.......................................4-48
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-12
8

Locks............................................................. 2-9
Delayed Locking........................................... 2-9
Door........................................................... 2-8
Leaving Your Vehicle....................................2-12
Lockout Protection.......................................2-12
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-14
Low Fuel Warning Light...................................3-51
Luggage Carrier..............................................2-47
Lumbar........................................................... 1-3
Manual Controls............................................ 1-3
Power Controls............................................. 1-3
M
Maintenance, Normal Replacement Parts..........5-102
Maintenance Schedule.....................................6-11
At Each Fuel Fill.........................................6-11
At Least Once a Month................................6-11
At Least Once a Year..................................6-13
At Least Twice a Year..................................6-12
Brake System Inspection..............................6-17
Engine Cooling System Inspection.................6-16
Exhaust System Inspection...........................6-16
Fuel System Inspection................................6-16
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2Maintenance Schedule (cont.)
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-11
Part C - Periodic MaintenanceInspections......6-16
Part D - Recommended Fluids and
Lubricants...............................................6-18
Part E - Maintenance Record........................6-20
Scheduled Maintenance................................. 6-5
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-16
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection....................6-17
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-59
Making Turns.................................................4-57
Malfunction Indicator Light................................3-43
Manual Lumbar Controls.................................... 1-3
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-6
Memory Seat.................................................2-50
Message.......................................................3-61
DIC Warnings and Messages........................3-61
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) ± Customer Assistance....................... 7-4
Mirror Operation.............................................2-34
Mirrors..........................................................2-34
9