engine overheat CHEVROLET CORVETTE C6 2012 Owners Manual

Black plate (16,1)Chevrolet Corvette Owner Manual - 2012
5-16 Instruments and Controls
Engine Coolant
Temperature Gauge
Metric
English
This gauge shows the engine
coolant temperature. If the gauge
pointer moves into the shaded area,
the engine is too hot.
This means that the engine coolant
has overheated. If the vehicle has
been operating under normal driving
conditions, pull off the road, stop the
vehicle and turn off the engine as
soon as possible.
See Engine Overheating on
page 10‑30 for more information.
Voltmeter Gauge
Base and Z06
The voltmeter shows the voltage
output of the battery. It shows the
voltage output of the charging
system while the engine is running.
The reading changes as the rate of
charge changes (with engine speed,
for example), but if the voltmeter
reads at 9 volts or below, the
instrument panel cluster and other
systems may shut down. The Driver
Information Center (DIC) reads
BATTERY VOLTAGE LOW when
the vehicle is at 10 volts or below.

Black plate (39,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-39
HATCH AJAR (Coupe)
This message displays when the
hatch is not closed completely.
Make sure that the hatch is closed
completely. SeeHatch on page 2‑11
for more information.
PASSENGER DOOR AJAR
This message displays if the
passenger door is not closed
properly. Make sure that the door is
closed completely.
TONNEAU AJAR (Convertible)
This message displays when the
convertible top is not closed
completely. Make sure that the
top is closed completely. See
Convertible Top on page 2‑24 for
more information.
TRUNK AJAR (Convertible)
This message displays when the
trunk is not closed completely.
Make sure that the trunk is closed
completely. See Hatch on page 2‑11
for more information.
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
the instrument panel cluster. See
Engine Overheating on
page 10‑30, Driver Information
Center (DIC) on page 5‑26, and
Engine Coolant Temperature Gauge
on page 5‑16.
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 10‑30.

Black plate (40,1)Chevrolet Corvette Owner Manual - 2012
5-40 Instruments and Controls
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, seeEngine
Overheating on page 10‑30.
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 5‑26.
Multiple chimes sound when
this message is displayed. This
message remains displayed and
active until the issue is resolved.
HOT ENGINE AIR
CONDITIONING OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature. To avoid added strain on a hot
engine, the air conditioning
compressor is automatically turned
off. When the coolant temperature
returns to normal, the A/C operation
automatically resumes. You can
continue to drive the vehicle. If this
message continues to appear, have
the system repaired by your dealer
as soon as possible to avoid
compressor damage.
Engine Oil Messages
CHANGE ENGINE OIL
This message displays when the
life of the engine oil has expired.
See
Maintenance Schedule on
page 11‑3. After an oil change, the
engine oil life system must be reset.
See “Engine Oil Life” underDriver
Information Center (DIC) on
page 5‑26. Also, see Engine Oil on
page 10‑14 andEngine Oil Life
System on page 10‑19 for more
information.
CHECK OIL LEVEL
On some vehicles, this message
displays and two chimes sound if
the oil level in the vehicle is low.
Once the vehicle senses a change
in the engine oil level, the light
remains off.
If this message appears after
starting the engine, the engine oil
level may be too low. You may need
to add oil. See Engine Overheating
on page 10‑30.
To acknowledge the message, press
the RESET button. The message
reappears every 10 minutes until
this condition changes.
LOW OIL PRESSURE
This message displays if low oil
pressure levels occur. If this
message appears while the engine
is running, stop the engine and do
not operate it until the cause of low
oil pressure is corrected. Severe
damage to the engine can result.

Black plate (41,1)Chevrolet Corvette Owner Manual - 2012
Instruments and Controls 5-41
A sound will be heard when this
message is displayed. SeeEngine
Oil on page 10‑14.
Engine Power Messages
ENGINE DRAG CONTROL
ACTIVE
This message displays when engine
drag control is active. When driving
in a lower gear in rainy, snowy,
or icy conditions and then letting up
on the accelerator or downshifting,
the rear wheels may begin to slip
and this message displays.
This message stays on for a few
seconds following the engine drag
control event.
REDUCED ENGINE POWER
If this message displays and the
check engine light comes on, a
noticeable reduction in the vehicle's
performance may occur. If the
REDUCED ENGINE POWER
message is displayed, but there is
no reduction in performance, proceed to your destination.
The performance may be reduced
the next time the vehicle is driven.
The vehicle may be driven at a
reduced speed while the REDUCED
ENGINE POWER message is
displayed, but acceleration and
speed may be reduced. Anytime the
check engine light stays on, the
vehicle should be taken to your
dealer as soon as possible for
diagnosis and repair. See
Malfunction Indicator Lamp on
page 5‑19
for more information.
Multiple chimes sound when this
message is displayed.
To acknowledge the message, press
the RESET button. The message
reappears every five minutes until
this condition changes.
If the REDUCED ENGINE
POWER message is displayed in
combination with the COOLANT
OVER TEMPERATURE message,
see Engine Overheating on
page 10‑30.
Fuel System Messages
CHECK GAS CAP
This message displays if the fuel
cap has not been fully tightened.
Check the fuel cap to make sure
that it is on properly. Once
tightened, it takes at least one
overnight park to reset or clear this
message. If both the CHECK GAS
CAP message and the malfunction
indicator lamp in the instrument
panel cluster are on, you may need
to see your dealer for service.
See Malfunction Indicator Lamp on
page 5‑19 for more information.
LOW FUEL
This message displays when the
fuel tank is less than 10 percent
full and the display is turned off.
A sound will be heard when this
message is displayed. Refill the fuel
tank as soon as possible. See Fuel
Gauge on page 5‑12.

Black plate (52,1)Chevrolet Corvette Owner Manual - 2012
5-52 Instruments and Controls
SeeRun-Flat Tires on page 10‑56,
Vehicle Load Limits on page 9‑14,
Tire Pressure on page 10‑62, and
Tire Pressure Monitor System on
page 10‑64. The DIC also shows
the tire pressure values. See Driver
Information Center (DIC) on
page 5‑26.
To acknowledge the message, press
the RESET button. A message
reappears every 10 minutes until the
condition is corrected.
Transmission Messages
SERVICE TRANSMISSION
This message displays when there
is a problem with the transmission.
See your dealer for service.
SHIFT TO PARK
If the vehicle has an automatic
transmission, this message displays
if the vehicle is not in P (Park) when
the engine is being turned off. The vehicle will be in ACCESSORY.
Once the shift lever is moved to
P (Park), the vehicle will turn off.
The vehicle will remain in
ACCESSORY, without the 20 minute
time-out period, until the shift lever
is moved to P (Park) or until the
driver presses the pushbutton to
restart the vehicle. See
Ignition
Positions on page 9‑20 for more
information.
TRANSMISSION HOT IDLE
ENGINE
This message displays and four
chimes sound if the transmission
fluid temperature rises above
132°C (270°F) or rises rapidly.
The transmission may shift gears
or apply the torque converter clutch
to reduce the fluid temperature.
Driving aggressively or driving
on long hills can cause the
transmission fluid temperature to be
higher than normal. If this message
appears, you may continue to drive at a slower speed. Monitor the
transmission fluid temperature and
allow it to cool to at least 110°C
(230°F). The transmission fluid
temperature can be monitored with
the gauges button on the DIC.
See
“DIC Operation and Displays”
under Driver Information Center
(DIC) on page 5‑26 andAutomatic
Transmission Fluid on page 10‑20.
Also check the engine coolant
temperature. If it is also hot, see
Engine Overheating on page 10‑30.
If this message is displayed during
normal vehicle operation on flat
roads, the vehicle may need
service. See your dealer for an
inspection.
If driving in a performance or
competitive manner, the use of
(S) Sport Automatic Mode or
(S) Sport Manual Paddle Shift
gear selection is recommended.
See Automatic Transmission on
page 9‑27 for more information.

Black plate (13,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-13
To save fuel, run the engine for only
short periods as needed to warm
the vehicle and then shut the engine
off and close the window most of
the way to save heat. Repeat this
until help arrives but only when you
feel really uncomfortable from the
cold. Moving about to keep warm
also helps.
If it takes some time for help to
arrive, now and then when you run
the engine, push the accelerator
pedal slightly so the engine runs
faster than the idle speed. This
keeps the battery charged to restart
the vehicle and to signal for help
with the headlamps. Do this as little
as possible to save fuel.If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
If stuck too severely for the traction
system to free the vehicle, turn the
traction system off and use the
rocking method.
{WARNING
If the vehicle's tires spin at high
speed, they can explode, and
you or others could be injured.
The vehicle can overheat,
causing an engine compartment
fire or other damage. Spin the
wheels as little as possible and
avoid going above 55 km/h
(35 mph).
For information about using tire
chains on the vehicle, see Tire
Chains on page 10‑76.
Rocking the Vehicle to
Get it Out
Turn the steering wheel left and
right to clear the area around the
front wheels. Turn off any traction
system. Shift back and forth
between R (Reverse) and a forward
gear, or with a manual transmission,
between 1 (First) or 2 (Second) and
R (Reverse), spinning the wheels
as little as possible. To prevent
transmission wear, wait until the
wheels stop spinning before shifting
gears. Release the accelerator
pedal while shifting, and press
lightly on the accelerator pedal
when the transmission is in gear.
Slowly spinning the wheels in the
forward and reverse directions
causes a rocking motion that could
free the vehicle. If that does not
get the vehicle out after a few tries,
it might need to be towed out.
If the vehicle does need to be towed
out, see Towing the Vehicle on
page 10‑82.

Black plate (23,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-23
too much gasoline. Try pushing
the accelerator pedal all the way
to the floor while cranking for up
to 15 seconds maximum. Wait at
least 15 seconds between each
try, to allow the cranking motor
to cool down. When the engine
starts, let go of the accelerator.
If the vehicle starts briefly but
then stops again, repeat these
steps. This clears the extra
gasoline from the engine.
Notice: Cranking the engine for
long periods of time, by pressing
the START button immediately
after cranking has ended, can
overheat and damage the
cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to allow the
cranking motor to cool down. The vehicle has a Computer-
Controlled Cranking System.
This feature assists in starting the
engine and protects components.
Once cranking has been initiated,
the engine continues cranking for a
few seconds or until the vehicle
starts. If the engine does not start,
cranking automatically stops after
15 seconds to prevent cranking
motor damage. To prevent gear
damage, this system also prevents
cranking if the engine is already
running.
Notice:
The engine is designed
to work with the electronics in
the vehicle. If electrical parts or
accessories are added, you
could change the way the engine
operates. Before adding electrical
equipment, check with your
dealer. If you do not, the engine
might not perform properly.
Any resulting damage would
not be covered by the vehicle
warranty.Stopping the Engine
If the vehicle has an automatic
transmission, move the shift lever
to P (Park) and press and hold the
Acc. (Off/Accessory) button, located
on the instrument panel, until the
engine shuts off. If the shift lever is
not in P (Park), the engine shuts off
and the vehicle goes into the
accessory mode. The DIC displays
SHIFT TO PARK. Once the shifter is
moved to P (Park), the vehicle turns
off. If the vehicle has a manual
transmission, it is recommended
that you move the shift lever to
R (Reverse) and set the parking
brake after you turn off the engine
by pressing and holding the Acc.
(Off/Accessory) button.
If the RKE transmitter is not
detected inside the vehicle when it
is turned to off, the DIC displays
NO FOB –OFF OR RUN?.
See Key and Lock Messages on
page 5‑42 for more information.

Black plate (24,1)Chevrolet Corvette Owner Manual - 2012
9-24 Driving and Operating
Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
.Audio System
.Power Windows
These features continue to work up
to 10 minutes after the engine is
turned off or until either door is
opened. If a door is opened, the
power windows and audio system
will shut off.
Shifting Into Park
(Automatic Transmission)
{WARNING
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking (Continued)
WARNING (Continued)
brake firmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow.
1. Hold the brake pedal down and set the parking brake.
See Parking Brake on page 9‑36
for more information.
2. Move the shift lever into P (Park) by holding in the button on the
lever and pushing the lever all
the way toward the front of the
vehicle.
3. Press the Acc. button (ignition switch) to turn the engine off.
Leaving the Vehicle with
the Engine Running
(Automatic Transmission)
{WARNING
It can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
firmly set. And, if you leave the
vehicle with the engine running,
it could overheat and even catch
fire. You or others could be
injured. Do not leave the vehicle
with the engine running.
If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the
parking brake is firmly set before
you leave it. After you have moved
the shift lever into P (Park), hold
down the regular brake pedal.

Black plate (36,1)Chevrolet Corvette Owner Manual - 2012
9-36 Driving and Operating
Parking Brake
The parking brake lever is located
to the right of the center console.
To set the parking brake, hold the
brake pedal down. Pull the parking
brake lever up. If the ignition is on,
the brake system warning light will
come on.
To release the parking brake, hold
the brake pedal down. Then push
the release button in as you move
the parking brake lever all the
way down.
Notice:Driving with the parking
brake on can overheat the brake
system and cause premature
wear or damage to brake system
parts. Make sure that the parking
brake is fully released and the
brake warning light is off before
driving.
Brake Assist
This vehicle has a brake assist
feature designed to assist the driver
in stopping or decreasing vehicle
speed in emergency driving
conditions. This feature uses the
stability system hydraulic brake
control module to supplement the
power brake system under
conditions where the driver has
quickly and forcefully applied the
brake pedal in an attempt to quickly
stop or slow down the vehicle.
The stability system hydraulic brake
control module increases brake
pressure at each corner of the
vehicle until the ABS activates.
Minor brake pedal pulsation or
pedal movement during this time
is normal and the driver should
continue to apply the brake pedal
as the driving situation dictates.
The brake assist feature will
automatically disengage when
the brake pedal is released or
brake pedal pressure is quickly
decreased.
Ride Control Systems
Traction Control
System (TCS)
The vehicle has a Traction Control
System (TCS) that limits wheel spin.
This is especially useful in slippery
road conditions. The system
operates only if it senses that the
rear wheels are spinning too much
or are beginning to lose traction.
When this happens, the system
works the rear brakes and reduces
engine power (by closing the throttle
and managing engine spark) to limit
wheel spin.
The TRACTION SYSTEM ACTIVE
message displays on the Driver
Information Center (DIC) when TCS
is limiting wheel spin. See Ride
Control System Messages on
page 5‑44. The system may be
heard or felt while it is working, but
this is normal.

Black plate (1,1)Chevrolet Corvette Owner Manual - 2012
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Lifting the Vehicle . . . . . . . . . . . . 10-4
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . . . . . . . 10-7
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-7
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil . . . . . . . . . . . . . . . . . . 10-14
Engine Oil Life System . . . . . 10-19
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-20
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-21
Hydraulic Clutch . . . . . . . . . . . . 10-21 Engine Air Cleaner/Filter . . . . 10-22
Cooling System (Engine) . . . 10-25
Cooling System
(Intercooler) . . . . . . . . . . . . . . . 10-26
Engine Coolant . . . . . . . . . . . . . 10-26
Engine Overheating . . . . . . . . 10-30
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-32
Power Steering Fluid . . . . . . . 10-32
Washer Fluid . . . . . . . . . . . . . . . 10-34
Brakes . . . . . . . . . . . . . . . . . . . . . 10-34
Brake Fluid . . . . . . . . . . . . . . . . . 10-38
Battery . . . . . . . . . . . . . . . . . . . . . 10-40
Rear Axle . . . . . . . . . . . . . . . . . . 10-40
Starter Switch Check . . . . . . . 10-41
Automatic Transmission Shift Lock Control
Function Check . . . . . . . . . . . 10-42
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-42
Wiper Blade Replacement . . . . . . . . . . . . . . 10-43
Windshield Replacement . . . 10-43
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-44
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-44
Halogen Bulbs . . . . . . . . . . . . . . 10-44
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-44
Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-45
Taillamps, Turn Signal, and Stoplamps . . . . . . . . . . . . . . . . 10-46
Replacement Bulbs . . . . . . . . . 10-46
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-46
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-47
Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-48
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-51
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-54
Winter Tires . . . . . . . . . . . . . . . . 10-55
Run-Flat Tires . . . . . . . . . . . . . . 10-56
Low-Profile Tires . . . . . . . . . . . 10-57