check engine CHEVROLET CORVETTE 2003 5.G Workshop Manual

Starter Switch Check
{CAUTION:
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. See
Parking Brake on page 2-30if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. On automatic transmission vehicles, try to start the
engine in each gear. The starter should work only
in PARK (P) or NEUTRAL (N). If the starter works in
any other position, your vehicle needs service.
On manual transmission vehicles, put the shift lever
in NEUTRAL (N), push the clutch down halfway
and try to start the engine. The starter should work
only when the clutch is pushed down all the way
to the ¯oor. If the starter works when the clutch isn't
pushed all the way down, your vehicle needs
service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. See
Parking Brake
on page 2-30if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the ON position,
but don't start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), your vehicle needs service.
6-10

Ignition Automatic Transmission
Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to OFF in each shift lever position.
The key should turn to OFF only when the shift lever is
in PARK (P).
On all vehicles, the key should come out only in OFF.
Parking Brake and Automatic
Transmission Park (P)
Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
·To check the parking brake's holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
·To check the PARK (P) mechanism's holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Underbody Flushing Service
At least every spring, use plain water to ¯ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-11

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 7-10.
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.
Tire and Wheel Inspection
Inspect the tires for uneven wear or damage. If there is
irregular or premature wear, check the wheel
alignment. Inspect for damaged wheels.
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 2-35.
6-12

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Rear Axle Service
Check the gear lubricant level in the rear axle and add if
needed. SeeRear Axle on page 5-46. A ¯uid loss
may indicate a problem. Check the axle and repair it if
needed.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-13

Audio System(s) (cont.)
Understanding Radio Reception.....................3-77
Automatic Transmission Check........................... 6-9
Automatic Transmission Shift Lock Control
System Check.............................................6-10
Automatic Transmission...................................2-21
Fluid..........................................................5-20
Operation...................................................2-24
B
Battery Replacement......................................... 2-8
Battery Run-Down Protection............................3-17
Battery..........................................................5-40
Before Leaving on a Long Trip.........................4-24
Body Lubrication Service................................... 6-9
Brake Fluid....................................................5-37
Brake Wear...................................................5-39
Brake............................................................2-30
Parking......................................................2-30
System Inspection.......................................6-13
System Warning Light..................................3-35
Brakes..........................................................5-37
Braking in Emergencies..................................... 4-8
Braking........................................................... 4-6
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-47
Back-Up Lamps...........................................5-51
Halogen Bulbs............................................5-47Bulb Replacement (cont.)
Headlamps.................................................5-47
Replacement Bulbs......................................5-51
Taillamps and Turn Signal Lamps..................5-49
Buying New Tires...........................................5-59
C
California Fuel.................................................. 5-5
Canada ± Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations............................5-92
Carbon Monoxide...................4-27, 4-35, 2-11, 2-35
Care of.........................................................5-77
Safety Belts................................................5-77
Your Cassette Tape Player............................3-78
Your CD Player...........................................3-79
Your CDs ...................................................3-79
Cargo Cover..................................................2-42
Cassette Tape Messages.................................3-66
Cassette Tape Player Service............................. 6-8
CD Adapter Kits.............................................3-66
CD Changer, Trunk-Mounted............................3-71
Center Console Storage Area...........................2-39
Chains, Tires..................................................5-64
Check Engine Light.........................................3-38
Checking Coolant............................................5-25
Checking Engine Oil........................................5-13
2

Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-48
Check...........................................................3-38
Engine Light...............................................3-38
Gages Warning Light...................................3-42
Chemical Paint Spotting...................................5-81
Child Restraints..............................................1-26
Child Restraint Systems...............................1-26
Infants and Young Children...........................1-23
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-31
Older Children.............................................1-21
Securing a Child Restraint Designed for
the LATCH System...................................1-33
Securing a Child Restraint in the Passenger
Seat Position...........................................1-34
Top Strap Anchor Location............................1-31
Top Strap...................................................1-30
Cigarette Lighter.............................................3-21
Cleaning Aluminum Wheels..............................5-80
Cleaning Coated Moldings................................5-76
Cleaning Exterior Lamps/Lenses.......................5-78
Cleaning Fabric/Carpet....................................5-75
Cleaning Glass Surfaces..................................5-77
Cleaning Interior Plastic Components.................5-77
Cleaning Leather............................................5-76
Cleaning Removable Roof Panel.......................5-79
Cleaning the Convertible Top............................5-80
Cleaning the Security Shade and
Convenience Net.........................................5-77Cleaning the Top of the Instrument Panel...........5-76
Cleaning Tires................................................5-80
Cleaning Windshield and Wiper Blades..............5-79
Cleaning........................................................5-81
Fiberglass Springs.......................................5-81
Inside of Your Vehicle..................................5-75
Outside of Your Vehicle................................5-78
Titanium Exhaust System..............................5-81
Underbody Maintenance...............................5-81
Weatherstrips..............................................5-77
Climate Control System...................................3-22
Dual Automatic............................................3-22
Outlet Adjustment........................................3-28
Clutch, Hydraulic.............................................5-22
Compact Disc Messages..........................3-70, 3-75
Competitive Driving Mode................................4-11
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-42
Convertible Top..............................................2-49
Lowering the Convertible Top........................2-50
Raising the Convertible Top..........................2-53
Coolant.........................................................3-38
Engine Temperature Gage............................3-38
Heater, Engine............................................2-23
Surge Tank Pressure Cap.............................5-26
Cooling System..............................................5-29
Courtesy Lamps.............................................3-16
Cruise Control.................................................. 3-9
Cupholder(s)..................................................2-39
Current and Past Model Order Forms................7-11
3

Electrical System (cont.)
Power Windows and Other Power Options......5-85
Windshield Wiper Fuses...............................5-85
Emergency Trunk Release Handle
(Convertible Only)........................................2-13
Emissions Inspection and Maintenance
Programs...................................................3-40
Engine Accessory Drive Belt Routing.................5-95
Engine Compartment Fuse Block......................5-89
Engine Coolant Level Check.............................. 6-8
Engine Oil Additives........................................5-16
Engine Oil Level Check..................................... 6-8
Engine Oil Scheduled Maintenance..................... 6-5
Engine..........................................................5-18
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-40
Check and Service Engine Soon Light............3-38
Compartment Overview................................5-12
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-38
Coolant......................................................5-23
Cooling System Inspection............................6-13
Exhaust.....................................................2-35
Oil Pressure Gage.......................................3-41
Oil .............................................................5-13
Overheating................................................5-26
Starting......................................................2-21
Exit/Entry Lighting...........................................3-16
Express-Down Window....................................2-15Extended Mobility Tires....................................5-54
Extender, Safety Belt.......................................1-20
Exterior Lamps...............................................3-12
F
Filter.............................................................5-18
Engine Air Cleaner......................................5-18
Finding a Station....................................3-63, 3-67
Finish Care....................................................5-78
Finish Damage...............................................5-81
Fixed Mast Antenna........................................3-79
Flash-to-Pass................................................... 3-7
Flat Tire........................................................5-68
Floor Mats.....................................................2-40
Fluid.............................................................5-20
Automatic Transmission................................5-20
Manual Transmission....................................5-20
Power Steering...........................................5-35
Windshield Washer......................................5-36
FM ...............................................................3-77
Fog Lamps....................................................3-14
Footnotes........................................................ 6-5
Front Air Dam................................................2-19
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
5

Fuel (cont.)
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-42
Gasoline Octane........................................... 5-4
Gasoline Speci®cations.................................. 5-5
System Inspection.......................................6-13
Fuses...........................................................5-86
Fuses and Circuit Breakers...........................5-86
Windshield Wiper.........................................5-85
G
Gage............................................................3-42
Check Gages Warning Light..........................3-42
Engine Coolant Temperature.........................3-38
Engine Oil Pressure.....................................3-41
Fuel..........................................................3-42
Speedometer..............................................3-31
Tachometer.................................................3-31
Voltmeter Gage...........................................3-34
Gasoline......................................................... 5-4
Octane........................................................ 5-4
Speci®cations............................................... 5-5
Glove Box.....................................................2-39
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hatch/Trunk Lid Release..................................2-12
Hatch/Trunk...................................................2-11
Hazard Warning Flashers................................... 3-4
Headlamp High/Low-Beam Changer.................... 3-7
Headlamp Wiring............................................5-85
Headlamps Doors...........................................3-12
Headlamps on Reminder................................... 3-7
Headlamps....................................................5-47
Bulb Replacement.......................................5-47
Halogen Bulbs............................................5-47
Head-Up Display (HUD)...................................3-17
Highway Hypnosis...........................................4-25
Hill and Mountain Roads..................................4-25
Hood............................................................5-10
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-5
How to Add Coolant to the Coolant
Surge Tank.................................................5-31
How to Add Fluid............................................5-22
How to Check and Add Fluid............................5-23
How to Check Lubricant...................................5-46
How to Check Power Steering Fluid..................5-35
How to Check................................5-20, 5-21, 5-56
How to Remove and Replace the
Floor Mats..................................................2-40
How to Use This Manual...................................... ii
6

How to Wear Safety Belts Properly...................1-12
Hydraulic Clutch.............................................5-22
Hydroplaning..................................................4-21
I
If No Steam Is Coming From Your Engine..........5-28
If Steam Is Coming From Your Engine...............5-27
If the Light Is Flashing.....................................3-39
If the Light Is On Steady.................................3-39
If You Are Stuck in Sand, Mud, Ice or Snow.......4-32
If You're Caught in a Blizzard...........................4-30
Ignition Automatic Transmission
Lock Check................................................6-11
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-23
In¯ation -- Tire Pressure..................................5-56
In¯ator Kit, Tire...............................................5-70
Inspection......................................................6-13
Brake System.............................................6-13
Engine Cooling System................................6-13
Exhaust System..........................................6-12
Fuel System...............................................6-13
Part C - Periodic Maintenance.......................6-12
Steering and Suspension..............................6-12
Tire and Wheel...........................................6-12
Installing the Roof Panel..................................2-47
Instrument Panel Brightness.............................3-15
Instrument Panel Fuse Block............................5-86Instrument Panel.............................................3-30
Cluster.......................................................3-30
Overview..................................................... 3-2
Integrated Windshield and Rear Window
Antennas....................................................3-80
Interior Lamps................................................3-15
J
Jump Starting.................................................5-41
K
Key Lock Cylinders Service................................ 6-9
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Lamps...........................................................3-12
Exterior......................................................3-12
Interior.......................................................3-15
Lap Belt Cinch Feature....................................1-14
Lap-Shoulder Belt...........................................1-13
LATCH System...............................................1-31
Child Restraints...........................................1-31
Securing a Child Restraint Designed for the
LATCH System........................................1-33
7

LATCH System (cont.)
Latches, Seatback............................................ 1-5
Leaving Your Vehicle With the Engine Running
(Automatic Transmission)..............................2-32
Leaving Your Vehicle.......................................2-10
Lifting From the Front......................................5-66
Lifting From the Rear......................................5-67
Lifting Your Corvette, Tires...............................5-64
Lighted Visor Vanity Mirrors..............................2-15
Light.............................................................3-37
Active Handling System................................3-37
Air Bag Off .................................................3-33
Air Bag Readiness.......................................3-32
Anti-Lock Brake System Warning...................3-36
Brake System Warning.................................3-35
Check Gages Warning.................................3-42
Malfunction Indicator....................................3-38
Safety Belt Reminder...................................3-31
Security.....................................................3-42
TCS Warning Light......................................3-36
Traction Control System (TCS) Warning..........3-36
Limited-Slip Rear Axle.....................................4-11
Loading Your Vehicle.......................................4-33
Lockout Protection..........................................2-10
Locks............................................................. 2-9
Door........................................................... 2-9
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door................................................2-10Loss of Control...............................................4-17
Lowering the Convertible Top............................2-50
M
Magnesium Wheel Finish.................................5-81
Magnetic Speed Variable Assist Steering............4-13
Maintenance, Normal Replacement Parts............5-94
Maintenance Schedule...................................... 6-8
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-8
At Least Once a Year.................................... 6-9
At Least Twice a Year................................... 6-9
Brake System Inspection..............................6-13
Engine Cooling System Inspection.................6-13
Exhaust System Inspection...........................6-12
Fuel System Inspection................................6-13
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............... 6-8
Part C - Periodic MaintenanceInspections......6-12
Part D - Recommended Fluids and
Lubricants...............................................6-14
Part E - Maintenance Record........................6-16
Rear Axle Service........................................6-13
Scheduled Maintenance................................. 6-4
Steering and Suspension Inspection...............6-12
8