check engine CHEVROLET CORVETTE 2008 6.G Workshop Manual

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (l).•
Change clutch hydraulic uid at a
regular maintenance service every
two years.See footnote (m).
Maintenance Footnotes
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chafing, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts or
signs of wear. Inspect power steering lines and hoses
for proper hook-up, binding, leaks, cracks, chafing, etc.
If you have the Z06 or Z51 performance package,
lubricate the outer ends of both rear toe-links.
(c)Visually inspect hoses and have them replaced if
they are cracked, swollen, or deteriorated. Inspect
all pipes, fittings, and clamps; replace with genuine
parts as needed. To help ensure proper operation,a pressure test of the cooling system and pressure
cap and cleaning the outside of the radiator and
air conditioning condenser is recommended at least
once a year.
(d)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and wiper blades,
if contaminated. Replace wiper blades that are worn
or damaged. See Windshield Wiper Blade Replacement
on page 5-55 and Windshield and Wiper Blades on
page 5-93 for more information.
(e)Make sure the safety belt reminder light and safety
belt assemblies are working properly. Look for any
other loose or damaged safety belt system parts. If you
see anything that might keep a safety belt system
from doing its job, have it repaired. Have any torn or
frayed safety belts replaced. Also see Checking
the Restraint Systems on page 1-58.
6-7

(f)Lubricate all key lock cylinders and body door
hinges. Lubricate all hinges and latches, including those
for the hood, rear compartment, console door, and
any folding seat hardware. More frequent lubrication
may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better, and not stick or squeak.
(g)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(h)Change automatic transmission fluid and filter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
Uses such as high performance operation.
(i)Drain, flush, and refill cooling system. This service
can be complex; you should have your dealer/retailer
perform this service. See Engine Coolant on page 5-28
for what to use. Inspect hoses. Clean radiator,
condenser, pressure cap, and filler neck. Pressure
test the cooling system and pressure cap.(j)If you drive regularly under dusty conditions, the filter
may require replacement more often.
(k)If you drive regularly under dusty conditions, inspect
the filter at each engine oil change.
(l)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
(m)Drain, flush, and refill clutch hydraulic system at a
regular service interval (IorII) every two years.
This service can be complex; you should have your
dealer/retailer perform this service. See Hydraulic Clutch
on page 5-27.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure vehicle safety,
dependability, and emission control performance. Your
dealer/retailer can assist with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to the
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
6-8

At Each Fuel Fill
It is important to perform these underhood checks at
each fuel fill.
Engine Oil Level Check
Notice:It is important to check the engine oil
regularly and keep it at the proper level. Failure to
keep the engine oil at the proper level can cause
damage to the engine not covered by the vehicle
warranty.
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-17.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-28.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
At Least Once a Month
Tire Inspection and Ination Check
Inspect the vehicle’s tires for wear and make sure
they are inated to the correct pressures.
SeeInflation - Tire Pressure on page 5-66.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-32.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
6-9

3. On automatic transmission vehicles, try to start the
engine in each gear. The vehicle should start only
in PARK (P) or NEUTRAL (N). If the vehicle
starts in any other position, contact your
dealer/retailer for service.
On manual transmission vehicles, put the shift lever
in NEUTRAL, push the clutch pedal down halfway,
and try to start the engine. The vehicle should
start only when the clutch pedal is pushed down all
the way to the oor. If the vehicle starts when
the clutch pedal is not pushed all the way down,
contact your dealer/retailer for service.Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
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. SeeParking Brake
on page 2-32.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off and 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), contact your dealer/retailer for service.
6-10

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.
Contact your dealer/retailer if service is required.
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

Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins give additional 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.
Owner Information
Owner publications are written specically for owners
and intended to provide basic operational information
about the vehicle. The owner manual includes the
Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00 (U.S.) plus processing fee
Without Portfolio: Owner Manual only.
RETAIL SELL PRICE: $25.00 (U.S.) plus processing fee
Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc.
on the World Wide Web at: helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
7-17

Audio System.................................................3-84
Audio Steering Wheel Controls....................3-103
Diversity Antenna System............................3-105
Navigation/Radio System, see Navigation
Manual.................................................3-103
Radio Reception........................................3-104
Setting the Clock.........................................3-85
Theft-Deterrent Feature...............................3-103
XM™ Satellite Radio Antenna System...........3-105
Audio System(s).............................................3-85
Automatic Door Lock.......................................2-12
Automatic Transmission
Fluid..........................................................5-27
Operation...................................................2-26
B
Battery..........................................................5-45
Exterior Lighting Battery Saver......................3-19
Run-Down Protection...................................3-20
Brake
Emergencies................................................ 4-5
Brakes..........................................................5-42
System Warning Light..................................3-41
Braking........................................................... 4-4
Braking in Emergencies..................................... 4-5
Break-In, New Vehicle.....................................2-21Bulb Replacement...........................................5-52
Halogen Bulbs............................................5-52
Headlamp Aiming........................................5-51
Headlamps, Front Turn Signal, and
Parking Lamps.........................................5-53
High Intensity Discharge (HID) Lighting...........5-52
Replacement Bulbs......................................5-55
Taillamps, Turn Signal, and Stoplamps............5-54
Buying New Tires...........................................5-74
C
Calibration.............................................2-37, 2-39
California Fuel.................................................. 5-6
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications..........................5-107
Carbon Monoxide...........................2-13, 2-35, 4-19
Care of
Safety Belts................................................5-90
Cargo Cover..................................................2-56
CD, MP3 .......................................................3-98
Center Console Storage Area...........................2-53
Chains, Tire...................................................5-81
Check
Engine Light...............................................3-45
2

Checking Things Under the Hood......................5-12
Chemical Paint Spotting...................................5-96
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-30
Lower Anchors and Tethers for
Children..........................................1-36, 1-39
Older Children.............................................1-26
Securing a Child Restraint in the
Right Front Seat Position..........................1-39
Cigarette Lighter.............................................3-25
Cleaning
Aluminum or Chrome-Plated Wheels..............5-94
Cargo Cover and Convenience Net................5-90
Coated Moldings.........................................5-89
Convertible Top...........................................5-94
Exterior Lamps/Lenses.................................5-91
Fabric/Carpet..............................................5-88
Fiberglass Springs.......................................5-96
Finish Care.................................................5-92
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-90
Interior.......................................................5-87
Leather......................................................5-89
Removable Roof Panel.................................5-93
Tires..........................................................5-95
Underbody Maintenance...............................5-96Cleaning (cont.)
Washing Your Vehicle...................................5-91
Weatherstrips..............................................5-91
Windshield and Wiper Blades........................5-93
Climate Control System
Air Filter, Passenger Compartment.................3-32
Dual Automatic............................................3-26
Outlet Adjustment........................................3-32
Clock, Setting.................................................3-85
Clutch, Hydraulic.............................................5-27
Collision Damage Repair..................................7-12
Compass
...............................................2-37, 2-39
Competitive Driving, Racing or Other.................4-15
Control of a Vehicle.......................................... 4-3
Convenience Net............................................2-55
Convertible Top......................................2-62, 2-68
Coolant
Engine.......................................................5-28
Engine Temperature Gage............................3-44
Surge Tank Pressure Cap.............................5-31
Cooling System..............................................5-34
Courtesy Lamps.............................................3-19
Cruise Control................................................3-11
Cupholders....................................................2-53
Customer Assistance Information
Courtesy Transportation................................7-11
Customer Assistance for Text
Telephone (TTY) Users............................... 7-6
Customer Assistance Offices........................... 7-6
3

Engine
Air Cleaner/Filter.........................................5-25
Check and Service Engine Soon Light............3-45
Coolant......................................................5-28
Coolant Temperature Gage...........................3-44
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-14
Exhaust.....................................................2-35
Oil .............................................................5-17
Oil Life System...........................................5-23
Oil Pressure Gage.......................................3-48
Overheated Protection Operating Mode...........5-33
Overheating................................................5-31
Starting......................................................2-23
Entry/Exit Lighting...........................................3-19
Event Data Recorders.....................................7-18
Extender, Safety Belt.......................................1-26
Exterior Lamps...............................................3-15
Exterior Lighting Battery Saver..........................3-19
F
Filter
Engine Air Cleaner......................................5-25
Finish Damage...............................................5-95
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass.................................................3-10Flat Tire........................................................5-86
Floor Mats.....................................................2-54
Fluid.............................................................5-27
Automatic Transmission................................5-27
Power Steering...........................................5-39
Windshield Washer......................................5-41
Fog Lamp
Fog ...........................................................3-17
Fog Lamp Light..............................................3-49
Front Air Dam................................................2-21
Fuel............................................................... 5-5
Additives...................................................... 5-7
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-11
Filling the Tank............................................. 5-8
Fuels in Foreign Countries.............................. 5-8
Gage .........................................................3-50
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-6
Running Out of...........................................2-36
Fuses
Engine Compartment Fuse Block.................5-104
Fuses and Circuit Breakers.........................5-100
Instrument Panel Fuse Block.......................5-100
Windshield Wiper.........................................5-99
5

G
Gage
Engine Coolant Temperature.........................3-44
Engine Oil Pressure.....................................3-48
Fuel..........................................................3-50
Speedometer..............................................3-36
Tachometer.................................................3-36
Voltmeter Gage...........................................3-40
Garage Door Opener.......................................2-46
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-53
GM Mobility Reimbursement Program.................. 7-7
H
Hatch/Trunk...................................................2-13
Hazard Warning Flashers................................... 3-6
Headlamp
Aiming .......................................................5-51
Headlamp Wiring............................................5-99
Headlamps
Bulb Replacement.......................................5-52
Daytime Running Lamps...............................3-16
Exterior Lamps............................................3-15
Flash-to-Pass..............................................3-10Headlamps (cont.)
Halogen Bulbs............................................5-52
Headlamps, Front Turn Signal, and
Parking Lamps.........................................5-53
High Intensity Discharge (HID) Lighting...........5-52
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-16
Wiper Activated...........................................3-16
Head-Up Display (HUD)...................................3-20
Heated Seats................................................... 1-4
Heater...........................................................3-26
Highbeam On Light.........................................3-50
High-Speed Operation, Tires.............................5-68
Highway Hypnosis...........................................4-18
Hill and Mountain Roads..................................4-18
Hood
Checking Things Under................................5-12
Release.....................................................5-13
Horn ............................................................... 3-7
How to Wear Safety Belts Properly...................1-14
Hydraulic Clutch.............................................5-27
I
Ignition Positions.............................................2-22
Immobilizer....................................................2-20
Immobilizer Operation......................................2-20
Infants and Young Children, Restraints...............1-30
6