2003 CHEVROLET SUBURBAN suspension

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 5-18for 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, transfer case 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 5-69for 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 5-23for 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 5-69for 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 5-69for proper rotation pattern and additional
information.(See footnote +.)
6-6

Part C: Periodic
MaintenanceInspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).
You should let your dealer's
service department do these jobs. Make sure any
necessary repairs are completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-11.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, cha®ng, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the ¯oor pan or could let
exhaust fumes into the vehicle. See
Engine Exhaust
on page 2-43.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
6-16

In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE: $120.00
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and speci®cations for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General Motors cars
and trucks. Each bulletin contains instructions to
assist in the diagnosis and service of your vehicle.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
7-11

Hill and Mountain Roads..................................4-49
Hitches..........................................................4-72
HomeLink Transmitter, Programming..................2-58
HomeLink
žTransmitter....................................2-57
Hood............................................................5-12
Checking Things Under................................5-12
Release.....................................................5-12
Horn............................................................... 3-7
How to Add Coolant to the Coolant Surge Tank . . 5-38
How to Add Fluid............................................5-29
How to Check Lubricant...................................5-56
How to Check Power Steering Fluid..................5-44
How to Check........................................5-26, 5-68
How to Inspect...............................................5-24
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-29
Hydroplaning..................................................4-43
I
If No Steam Is Coming From Your Engine..........5-35
If Steam Is Coming From Your Engine...............5-34
If the Light is Flashing.....................................3-48
If the Light Is On Steady.................................3-49
If You Are Stuck in Sand, Mud, Ice or Snow.......4-56If You Do Decide To Pull A Trailer.....................4-66
If You're Caught in a Blizzard...........................4-54
Ignition Positions.............................................2-22
Ignition Transmission Lock Check......................6-14
Infants and Young Children, Restraints...............1-49
In¯ation -- Tire Pressure..................................5-68
Inspection......................................................6-17
Brake System.............................................6-17
Engine Cooling System................................6-17
Exhaust System..........................................6-16
Fuel System...............................................6-16
Part C - Periodic Maintenance.......................6-16
Steering and Suspension..............................6-16
Transfer Case and Front Axle
(Four-Wheel Drive)...................................6-17
Instrument Panel Brightness.............................3-17
Instrument Panel Fuse Block..........................5-109
Instrument Panel.............................................3-37
Cluster.......................................................3-37
Overview..................................................... 3-4
Interior Lamps................................................3-17
J
Jump Starting.................................................5-49
9

M
Maintenance, Normal Replacement Parts..........5-121
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.................6-17
Exhaust System Inspection...........................6-16
Fuel System Inspection................................6-16
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.............6-11
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 and Suspension 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.....................4-77
Making Turns.................................................4-75Malfunction Indicator Light................................3-47
Manual Seats................................................... 1-3
Manual Windows............................................2-16
Matching Transmitter(s) to Your Vehicle............... 2-6
Memory Seat.................................................2-66
Message.......................................................3-64
DIC Warnings and Messages........................3-64
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) ± Customer Assistance....................... 7-5
Mirrors..........................................................2-49
Automatic Dimming Rearview with Compass
and Temperature Display...........................2-49
Automatic Dimming Rearview with OnStar
ž,
Compass and Temperature Display.............2-45
Manual Rearview Mirror................................2-45
Outside Automatic Dimming Mirror.................2-53
Outside Camper-Type Mirrors........................2-52
Outside Convex Mirror.................................2-54
Outside Curb View Assist Mirrors...................2-54
Outside Heated Mirrors................................2-54
Outside Manual Mirrors................................2-51
Outside Power Camper-Type.........................2-53
Outside Power Foldaway Mirrors....................2-53
Outside Power Mirrors..................................2-52
Model Reference................................................ vi
MyGMLink.com................................................ 7-4
11

Steering and Suspension Inspection..................6-16
Steering in Emergencies..................................4-16
Steering Tips..................................................4-15
Steering Wheel Controls, Audio.......................3-126
Steering........................................................4-15
Step-Bumper Pad...........................................4-81
Stereo RCA Jacks.........................................3-120
Storage Areas................................................2-62
Center Console Storage Area........................2-62
Convenience Net.........................................2-64
Cupholder(s)...............................................2-61
Front Storage Area......................................2-61
Glove Box..................................................2-61
Luggage Carrier..........................................2-62
Rear Storage Area.......................................2-63
Storing a Flat or Spare Tire, Jack and Tools.......5-90
Stuck in Sand, Mud, Ice or Snow......................4-56
Sun Visors.....................................................2-18
Sunroof.........................................................2-65
Supplemental Brake Assist System...................... 4-9
T
Tachometer....................................................3-38
Taillamps.......................................................5-64
Temperature and Compass Display....................2-46
Temperature Display........................................2-49Testing the Alarm............................................2-20
Theft-Deterrent, Radio....................................3-125
Theft-Deterrent Systems...................................2-18
Content Theft-Deterrent................................2-18
Passlock
ž...................................................2-20
Third Row......................................................1-67
Throttle, Adjustable..........................................2-24
TIGHTEN FUEL CAP......................................3-70
Tilt Wheel........................................................ 3-7
Tilting the 50/50 Split Bench Seat.....................1-12
Tilting the Bench Seat.....................................1-17
Tire In¯ation Check.........................................6-11
Tires.............................................................5-67
Buying New Tires........................................5-71
Chains.......................................................5-76
Changing a Flat Tire....................................5-77
If a Tire Goes Flat.......................................5-76
In¯ation -- Tire Pressure...............................5-68
Inspection and Rotation................................5-69
Spare Tire..................................................5-98
Uniform Tire Quality Grading.........................5-72
Wheel Alignment and Tire Balance.................5-74
Wheel Replacement.....................................5-74
When It Is Time for New Tires......................5-70
To Use the Engine Coolant Heater....................2-25
Top Strap Anchor Location...............................1-59
Top Strap......................................................1-57
17