service CHEVROLET CORVETTE 2013 6.G Owner's Manual

Black plate (18,1)Chevrolet Corvette Owner Manual - 2013 - crc2 - 11/8/12
5-18 Instruments and Controls
{WARNING
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. SeeAirbag Readiness
Light on page 5‑16 for more
information, including important
safety information.
Malfunction
Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors the operation
of the vehicle to ensure emissions
are at acceptable levels, helping to
maintain a clean environment. The
malfunction indicator lamp comes
on when the vehicle is placed in
Service Only Mode, as a check to
show it is working. If it does not, have the vehicle serviced by your
dealer. See
Ignition Positions on
page 9‑18 for more information.
If the malfunction indicator lamp
comes on while the engine is
running, this indicates that the OBD
II system has detected a problem
and diagnosis and service might be
required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system also
assists the service technician in
correctly diagnosing any
malfunction. Notice:
If the vehicle is
continually driven with this light
on, the emission controls might
not work as well, the vehicle fuel
economy might not be as good,
and the engine might not run as
smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty.
Notice: Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of the
original tires with other than
those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by the
vehicle warranty. This could also
result in a failure to pass a
required Emission Inspection/
Maintenance test. See
Accessories and Modifications on
page 10‑3.

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Instruments and Controls 5-19
This light comes on during a
malfunction in one of two ways:
Light Flashing:A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
The following can prevent more
serious damage to the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
If the light continues to flash, find a
safe place to stop and park the
vehicle. Turn the vehicle off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer for service as soon as
possible.
Light On Steady: An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required. The following may correct an
emission control system
malfunction:
.Check that the fuel cap is fully
installed. See
Filling the Tank on
page 9‑47. The diagnostic
system can determine if the fuel
cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn the
light off.
.Check that good quality fuel is
used. Poor fuel quality causes
the engine not to run as
efficiently as designed and may
cause: stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up. If one or more of these conditions
occurs, change the fuel brand used.
It may require at least one full tank
of the proper fuel to turn the light off.
See
Recommended Fuel on
page 9‑45.
If none of the above have made the
light turn off, your dealer can check
the vehicle. The dealer has the
proper test equipment and
diagnostic tools to fix any
mechanical or electrical problems
that might have developed.Emissions Inspection and
Maintenance Programs
Depending on where you live, your
vehicle may be required to
participate in an emission control
system inspection and maintenance
program. For the inspection, the
emission system test equipment will
likely connect to the vehicle's Data
Link Connector (DLC).

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5-20 Instruments and Controls
The DLC is under the instrument
panel to the left of the steering
wheel. See your dealer if assistance
is needed.
The vehicle may not pass
inspection if:
.The malfunction indicator lamp is
on with the engine running, or if
the vehicle is placed in Service
Only Mode and the malfunction
indicator lamp does not come
on. See your dealer for
assistance in verifying proper
operation of the malfunction
indicator lamp.
.The OBD II (On-Board
Diagnostics) system determines
that critical emission control
systems have not been
completely diagnosed. The
vehicle would be considered notready for inspection. This can
happen if the 12-volt battery has
recently been replaced or run
down. The diagnostic system is
designed to evaluate critical
emission control systems during
normal driving. This can take
several days of routine driving.
If this has been done and the
vehicle still does not pass the
inspection for lack of OBD II
system readiness, your dealer
can prepare the vehicle for
inspection.
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
MetricEnglish
This light comes on briefly while
starting the engine. If it does not
come on, have it fixed so it is ready
to warn if there is a problem.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.

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Instruments and Controls 5-21
If this warning light stays on after
the engine is started, the parking
brake may still be set or there could
be a brake problem. Refer to
Parking Brake on page 9‑33to see
if it is set. If the parking brake is not
set, have the brake system
inspected right away.
If the light comes on while driving
and a CHECK BRAKE FLUID
message shows on the DIC, pull off
the road and stop carefully. The
pedal may be harder to push or the
pedal may go closer to the floor.
It may take longer to stop. If the
light is still on, have the vehicle
towed for service. See Towing the
Vehicle on page 10‑79 andBrake
System Messages on page 5‑35 for
more information.Antilock Brake System
(ABS) Warning Light
For vehicles with the Antilock Brake
System (ABS), this light comes on
briefly when the engine is started.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light then goes off.
If the ABS light stays on, turn the
ignition off. If the light comes on
while driving, stop as soon as it is
safely possible and turn the ignition
off. Then start the engine again to
reset the system. If the ABS light
stays on, or comes on again while
driving, the vehicle needs service.
If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes. If the regular brake system warning
light is also on, the vehicle does not
have antilock brakes and there is a
problem with the regular brakes.
See
Brake System Warning Light on
page 5‑20.
One-to-Four Shift Light
(Manual Transmission)
When this light comes on, the
vehicle can only be shifted from
1 (First) to 4 (Fourth) instead of
1 (First) to 2 (Second).
The shift must be completed into
4 (Fourth) to turn off this feature.
This helps the vehicle get the best
possible fuel economy.
After shifting to 4 (Fourth), the
vehicle can be downshifted to a
lower gear.

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5-22 Instruments and Controls
Notice:Forcing the shift lever
into any gear except 4 (Fourth)
when the 1 TO 4 SHIFT light
comes on may damage the
transmission. Shift only from
1 (First) to 4 (Fourth) when the
light comes on.
This light comes on when:
.The engine coolant temperature
is higher than 76°C (169°F).
.The vehicle is going 24 to
31 km/h (15 to 19 mph).
.The vehicle is at 21 percent
throttle or less.
Traction Off Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your dealer. If the system is working
normally, the indicator light then
turns off.
The traction off light comes on when
the Traction Control System (TCS)
has been turned off by pressing and
releasing the traction control button.
This light and the Active Handling
light come on when Active Handling
is turned off.
If the TCS is off, wheelspin is not
limited. Adjust driving accordingly.
See
Active Handling System on
page 9‑35 andTraction Control
System (TCS) on page 9‑34 for
more information.
StabiliTrak®OFF Light
This light comes on briefly as the
engine is started. If the light does
not, have the vehicle serviced by
your dealer. If the system is working
normally the light goes off.
This light also comes on while the
vehicle is in the Competitive
Driving Mode.
For the ZR1 this light comes on
when Performance Traction mode is
activated, along with DIC messages
for the five traction modes.
This light comes on when the Active
Handling system is turned off.
If Active Handling is off, the Traction
Control System (TCS) is also off.

Black plate (23,1)Chevrolet Corvette Owner Manual - 2013 - crc2 - 11/8/12
Instruments and Controls 5-23
If the TCS is off, the system does
not assist in controlling the vehicle.
Turn on the TCS and the Active
Handling systems and the warning
light turns off.
SeeActive Handling System on
page 9‑35 andTraction Control
System (TCS) on page 9‑34 for
more information.
Active Handling System
Light
The Active Handling System light
comes on briefly while starting the
engine. If it does not, have the
vehicle serviced by your dealer. If the light stays on or comes on
while driving, a chime sounds and a
SERVICE ACTIVE HANDLING
SYSTEM message appears on the
DIC and the vehicle need service.
When the Active Handling System is
turned off, the light comes on, a
chime sounds, and the TRACTION
SYSTEM AND ACTIVE
HANDLING–
OFF message
displays in the DIC. The Traction
Control System is off and the Active
Handling System does not assist
with controlling the vehicle.
When the Active Handling System is
turned back on, the light turns off, a
chime sounds, and the TRACTION
SYSTEM AND ACTIVE
HANDLING– ON message displays
in the DIC.
See Ride Control System Messages
on page 5‑42 for more information.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information
about tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. SeeTire Messages on
page 5‑48. Stop as soon as
possible, and inflate the tires to the
pressure value shown on the Tire
and Loading Information label. See
Tire Pressure on page 10‑60.

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5-24 Instruments and Controls
When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light
will come on at every ignition cycle.
SeeTire Pressure Monitor
Operation on page 10‑64.
Security Light
The security light should come on
briefly as the engine is started. If the
system is working normally, the
indicator light turns off. If it does not
come on, have the vehicle serviced
by your dealer. If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system.
This light is also used to indicate the
status of the anti-theft alarm system
when the ignition is turned off. The
light will flash rapidly if the alarm
system is arming and one or more
of the monitored entry points is not
closed. The light will stay on if the
alarm is arming and all entry points
are closed.
For information regarding this light
and the vehicle's security system,
see
Vehicle Alarm System on
page 2‑12.High-Beam On Light
This light comes on when the
high-beam headlamps are in use.
See Headlamp High/Low-Beam
Changer on page 6‑2.
Front Fog Lamp Light
The front fog lamp light comes on
when the fog lamps are in use.
The light goes out when the fog
lamps are turned off. See Fog
Lamps on page 6‑5.

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5-34 Instruments and Controls
If the ignition is on and the HUD
image cannot be seen, check to
see if:
.Something is covering the
HUD unit.
.The HUD dimmer control is
adjusted properly.
.The HUD image is adjusted to
the proper height.
.Ambient light is low, in the
direction the vehicle is facing.
.A fuse is blown. SeeFuses and
Circuit Breakers on page 10‑45.
Keep in mind that the windshield is
part of the HUD system. See
Windshield Replacement on
page 10‑41.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing the RESET button.
The messages that require
immediate action cannot be cleared
until that action is performed. All
messages should be taken seriously
and clearing the messages does not
correct the problem.
Battery Voltage and
Charging Messages
BATTERY SAVER ACTIVE
This message displays when the
vehicle has detected that the battery
voltage is dropping beyond a
reasonable point. The battery saver system starts reducing certain
features of the vehicle that you may
be able to notice. At the point that
features are disabled, this message
is displayed. It means that the
vehicle is trying to save the charge
in the battery. Turn off unnecessary
accessories to allow the battery to
recharge.
BATTERY VOLTAGE HIGH
See
Voltmeter Gauge on page 5‑16.
BATTERY VOLTAGE LOW
SeeVoltmeter Gauge on page 5‑16.
SERVICE CHARGING SYSTEM
If this message displays while you
are driving, there may be a problem
with the electrical charging system.
It could mean that there is a loose
or broken drive belt or that there is
another electrical problem. Have the
vehicle checked right away by your
dealer. Driving while this message is
on could drain the battery.

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Instruments and Controls 5-35
If you must drive a short distance
with the message on, be certain to
turn off the vehicle's accessories,
such as the radio and air
conditioner.
Multiple chimes sound when this
message is displayed.
To acknowledge the message, press
the RESET button. The message
reappears every 10 minutes until
this condition changes.
Brake System Messages
ABS (Antilock Brake System)
ACTIVE
This message displays when the
Antilock Brake System (ABS) is
adjusting brake pressure to help
avoid a braking skid.
Slippery road conditions may exist if
this message is displayed, so adjust
your driving accordingly. The
message stays on for a few
seconds after the system stopsadjusting brake pressure. See
Antilock Brake System (ABS) on
page 9‑32
for more information.
CHANGE BRAKE PADS
On vehicles with electronic brake
pad wear sensors, this message will
be displayed when the pads are
worn. See your dealer for service.
CHECK BRAKE FLUID
This message displays, a sound will
be heard, and the brake system
warning light on the instrument
panel cluster turns on if the ignition
is on to inform the driver that the
brake fluid level is low. See Brake
System Warning Light on
page 5‑20. Have the brake system
serviced by your dealer as soon as
possible. See Brakes on
page 10‑32.
SERVICE ANTILOCK BRAKES
If this message displays while you
are driving, stop as soon as
possible and turn the ignition off.
Then start the engine again to reset the system. If the message stays
on, or comes back on again while
you are driving, the vehicle is in
need of service. See your dealer.
If the antilock brake system (ABS)
warning light is on and the regular
brake system warning light is not
on, you still have brakes, but do not
have ABS. If the regular brake
system warning light is also on, you
do not have ABS and there is a
problem with the brakes. See
Antilock Brake System (ABS)
Warning Light on page 5‑21
and
Brake System Warning Light on
page 5‑20.
If this message is displayed, the
Traction Control System (TCS) and
the Active Handling System will also
be disabled. The DIC will scroll
three messages: SERVICE
ANTILOCK BRAKES, SERVICE
TRACTION SYSTEM, and
SERVICE ACTIVE HANDLING, and
the instrument panel cluster lights
will come on along with a sound.
When the service message is
displayed, the computer controlled

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5-38 Instruments and Controls
Engine Cooling System
Messages
CHECK COOLANT LEVEL
This message displays when the
engine coolant level is low. Have
the cooling system serviced by your
dealer as soon as possible. See
Engine Coolant on page 10‑26.
COOLANT OVER
TEMPERATURE
This message displays and a sound
will be heard if the engine coolant
exceeds 124°C (255°F). If you have
been operating the vehicle under
normal driving conditions, pull off
the road, stop the vehicle, and turn
off the engine as soon as possible.
You can monitor the coolant
temperature with the gauges button
on the DIC or the engine coolant
temperature gauge on theinstrument panel cluster. See
Engine Overheating on page 10‑29,
Driver Information Center (DIC) on
page 5‑25, and
Engine Coolant
Temperature Gauge on page 5‑15.
To acknowledge the message, press
the RESET button. The message
and sound will come back on until
this condition changes. If you do not
press the RESET button, the
message remains on until the
condition changes.ENGINE OVERHEATED– STOP
ENGINE
This message displays and a sound
will be heard when the engine has
overheated. Stop and turn the
engine off immediately to avoid
severe engine damage. See Engine
Overheating on page 10‑29.
ENGINE PROTECTION
REDUCE ENGINE RPM
This message displays if the engine
oil temperature exceeds 160°C
(320°F). Check the engine coolant
temperature and engine oil level.
If the engine is too hot, see Engine
Overheating on page 10‑29. The
vehicle may need service, so see
your dealer.
You can monitor the oil temperature
with the gauges button on the DIC.
See Driver Information Center (DIC)
on page 5‑25.
Multiple chimes sound when this
message is displayed. This
message remains displayed and
active until the issue is resolved.