2012 CHEVROLET CORVETTE C6 check engine light

Black plate (15,1)Chevrolet Corvette Owner Manual - 2012
Keys, Doors, and Windows 2-15
5. Reach through the open windowand manually pull the release
lever on the floor.
6. Press the unlock button on the transmitter to turn off the alarm.
If the alarm does not sound, check
to see if the horn works. The horn
fuse may be blown. See Fuses and
Circuit Breakers on page 10‑47.
If the horn works, but the alarm
does not go off, see your dealer.
Disarming the System
Press the unlock button on the RKE
transmitter or squeeze the door
handle sensor while the transmitter
is near the vehicle to unlock a door.
Unlocking a door any other way sets
off the alarm. If the alarm sounds,
press the unlock button on the RKE
transmitter to disarm it.
Do not leave the key or device
that disarms or deactivates the
theft-deterrent system in the vehicle.
Immobilizer
See Radio Frequency Statement on
page 13‑21 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
rules and Industry Canada
Standards RSS-GEN/210/220/310.
Immobilizer Operation
The vehicle has a passive
theft-deterrent system.
The system is automatically armed
when the ignition is turned off.
The immobilization system is
disarmed when the ignition is turned
to OFF/ACCESSORY or START and
a valid transmitter is found in the
vehicle.
You do not have to manually arm or
disarm the system.
The security light comes on if there
is a problem with arming or
disarming the theft-deterrent
system. The system has one or more RKE
transmitters that are matched to an
immobilizer control unit in the
vehicle. Only a correctly matched
RKE transmitter starts the vehicle.
The vehicle may not start if the RKE
transmitter is damaged.
If the engine does not start and the
security light comes on, there may
be a problem with the immobilizer
system. Press the START button
again.
If the vehicle does not start and
the RKE transmitter appears to
be undamaged, try another
RKE transmitter. Or, place the
transmitter in the transmitter pocket.
See
“NO FOBS DETECTED”
under Key and Lock Messages on
page 5‑42 for additional information.
Check the fuse. See Fuses and
Circuit Breakers on page 10‑47.

Black plate (8,1)Chevrolet Corvette Owner Manual - 2012
5-8 Instruments and Controls
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Warning lights come on when there
could be a problem with a vehicle
function. Some warning lights come
on briefly when the engine is started
to indicate they are working.Gauges can indicate when there
could be a problem with a vehicle
function. Often gauges and warning
lights work together to indicate a
problem with the vehicle.
When one of the warning lights
comes on and stays on while
driving, or when one of the gauges
shows there may be a problem,
check the section that explains what
to do. Follow this manual's advice.
Waiting to do repairs can be costly
and even dangerous.

Black plate (17,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-17
Have it checked right away.
Driving with the voltmeter reading at
10 volts or below could drain the
battery and disable the vehicle.
Safety Belt Reminders
Safety Belt Reminder Light
When the engine is started, a chime
sounds for several seconds to
remind a driver to fasten the safety
belt, unless the driver safety belt is
already buckled.
The safety belt light comes on and
stays on for several seconds, then
flashes for several more.
This chime and light are repeated if
the driver remains unbuckled and
the vehicle is in motion. If the driver
safety belt is already buckled,
neither the chime nor the light
comes on.
Airbag Readiness Light
The system checks the airbag's
electrical system for possible
malfunctions. If the light stays on,
it indicates there is an electrical
problem. The system check includes
the airbag sensor(s), passenger
sensing system, the pretensioners,
the airbag modules, the wiring, and
the crash sensing and diagnostic
module. For more information on the
airbag system, seeAirbag System
on page 3‑15.
The airbag readiness light flashes
for a few seconds when the engine
is started. If the light does not come
on then, have it fixed immediately.
{WARNING
If the airbag readiness light stays
on after the vehicle is started or
comes on while driving, it means
the airbag system might not be
working properly. The airbags in
the vehicle might not inflate in a
crash, or they could even inflate
without a crash. To help avoid
injury, have the vehicle serviced
right away.
If there is a problem with the airbag
system, an airbag Driver Information
Center (DIC) message can also
come on. See Vehicle Messages on
page 5‑35 for more information.

Black plate (19,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-19
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, to produce
a cleaner environment. This light
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. SeeIgnition
Positions on page 9‑20 for more
information.
If the malfunction indicator lamp
comes on and stays on while the
engine is running, this indicates that
there is an OBD II problem and
service is 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 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.
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.

Black plate (20,1)Chevrolet Corvette Owner Manual - 2012
5-20 Instruments and Controls
If the light continues to flash, 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 system malfunction:
.Check that the fuel cap is fully
installed. See Filling the Tank on
page 9‑51. 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 will require at
least one full tank of the proper
fuel to turn the light off.
See Recommended Fuel on
page 9‑48.
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
Some local governments may have
programs to inspect the on-vehicle
emission control equipment.
For the inspection, the emission
system test equipment is
connected to the vehicle’s Data
Link Connector (DLC).
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

Black plate (22,1)Chevrolet Corvette Owner Manual - 2012
5-22 Instruments and Controls
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. SeeTowing the
Vehicle on page 10‑82 andBrake
System Messages on page 5‑36 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 5‑21.
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.
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.

Black plate (31,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-31
Head-Up Display (HUD)
{WARNING
If the HUD image is too bright,
or too high in your field of view, it
may take you more time to see
things you need to see when it is
dark outside. Be sure to keep the
HUD image dim and placed low in
your field of view.
For vehicles with the Head-Up
Display (HUD), you can see some
of the driver information that
appears on the instrument panel
cluster.
The information may be displayed in
English or metric units and appears
as an image focused out toward
the front of the vehicle. The HUD
consists of the following information:
.Speedometer
.Turn Signal Indicators
.High-Beam Indicator Symbol
.Tachometer
.Manual Paddle Shift Gear
Indicator (If Equipped)
These displays on the HUD are
for use when using the manual
paddle shift controls to shift the
transmission. See “Manual
Paddle Shift” inAutomatic
Transmission on page 9‑27.
.Shift Light
This light is used for
performance driving to
indicate that the vehicle's best
performance level has been
reached to shift the transmission
into the next higher gear.
An arrow pointing up will light
up on the display just prior to
reaching the engine fuel cut-off
mode. This cut-off is about
6,500 rpm for the LS3 engine,
6,600 rpm for the LS9 & ZR1
engines, and 7,000 rpm for the
LS7 engine.
.Check Gauges Warning
.Engine Coolant Temperature
Gauge
.Transmission Fluid Temperature
Gauge, (Automatic Transmission
Vehicles Only)
.Engine Oil Temperature Gauge
.Engine Oil Pressure Gauge
.G-Force Gauge
.Boost Gauge (If Equipped)
.Audio Functions, Street
Mode Only
.Navigation, Only with Navigation
Radio, Turn-by-Turn Guidance.
Street Mode Only

Black plate (33,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-33
Within each mode, the display, can
be further customized by pressing
the PAGE button. Pressing this
button in each mode will turn off and
on the following:
.Street Mode—No tachometer,
circular tachometer, and linear
tachometer.
.Track Modes 1 and 2 —No
minor gauge, coolant
temperature, transmission oil
temperature (Automatic
Transmission only), engine
oil temperature, engine oil
pressure, and boost gauge.
While in Track Mode 1 or 2, the
maximum G value achieved
during the current ignition cycle
can be displayed by pressing
and holding the PAGE button.
The maximum G display will be
shown until the PAGE button is
released. The maximum G value
display will be identical to the
normal G value display, except the maximum G gauge digits
(X.XX G) and corresponding
G gauge bar will overwrite the
current G value.
English
Metric
Be sure to continue scanning the
displays, controls, and driving
environment just as you would in a
vehicle without HUD. If you never
look at the instrument panel cluster, you may miss something important,
such as a warning light. Under
important warning conditions, the
CHECK GAGES warning will
illuminate in the HUD. View your
Driver Information Center (DIC) for
more information.
The HUD controls are located to the
left of the steering wheel.