2011 CHEVROLET CORVETTE check engine

Black plate (49,1)Chevrolet Corvette Owner Manual - 2011
Driving and Operating 9-49
If the vehicle has the 6.2L V8 engine
(VIN Code T) or the 7.0L V8 engine
(VIN Code E), use premium
unleaded gasoline with a posted
octane rating of 91 or higher.
For best performance, use premium
unleaded gasoline with a posted
octane rating of 93. In an
emergency, you can use regular
unleaded gasoline with an octane
rating of 87 or higher. If 87 octane
fuel is used, do not perform any
aggressive driving maneuvers such
as wide open throttle applications.
You might also hear audible spark
knock during acceleration. Refill the
tank with premium fuel as soon as
possible to avoid damaging the
engine. If heavy knocking is heard
when using gasoline rated at
91 octane or higher, the engine
needs service.Gasoline Specifications
At a minimum, gasoline
should meet ASTM specification
D 4814 in the United States or
CAN/CGSB‐3.5 or 3.511 in Canada.
Some gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. SeeFuel Additives
on page 9‑50 for additional
information.
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards,
it is designed to operate on fuels
that meet California specifications.
See the underhood emission control
label. If this fuel is not available in
states adopting California emissions
standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance might be affected. The malfunction
indicator lamp could turn on and the
vehicle might fail a smog‐check test.
See
Malfunction Indicator Lamp on
page 5‑18. If this occurs, return to
your authorized dealer for diagnosis.
If it is determined that the condition
is caused by the type of fuel used,
repairs might not be covered by the
vehicle warranty.
Fuels in Foreign
Countries
If you plan on driving in another
country outside the United States or
Canada, the proper fuel might be
hard to find. Never use leaded
gasoline or any other fuel not
recommended in the previous text
on fuel. Costly repairs caused by
use of improper fuel would not be
covered by the vehicle warranty.
To check the fuel availability, ask
an auto club, or contact a major oil
company that does business in the
country where you will be driving.

Black plate (1,1)Chevrolet Corvette Owner Manual - 2011
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-3
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-4
Lifting the Vehicle . . . . . . . . . . . . 10-5
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . . . . . . . 10-8
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Engine Compartment Overview . . . . . . . . . . . . . . . . . . 10-10
Engine Oil . . . . . . . . . . . . . . . . . . 10-15
Engine Oil Life System . . . . . 10-22
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-23 Manual Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . 10-23
Hydraulic Clutch . . . . . . . . . . . . 10-24
Engine Air Cleaner/Filter . . . . 10-24
Cooling System (Engine) . . . 10-28
Cooling System (Intercooler) . . . . . . . . . . . . . . . 10-29
Engine Coolant . . . . . . . . . . . . . 10-29
Engine Overheating . . . . . . . . 10-34
Overheated Engine Protection
Operating Mode . . . . . . . . . . . 10-35
Power Steering Fluid . . . . . . . 10-36
Washer Fluid . . . . . . . . . . . . . . . 10-37
Brakes . . . . . . . . . . . . . . . . . . . . . 10-38
Brake Fluid . . . . . . . . . . . . . . . . . 10-41
Battery . . . . . . . . . . . . . . . . . . . . . 10-43
Rear Axle . . . . . . . . . . . . . . . . . . 10-44
Starter Switch Check . . . . . . . 10-44
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-45 Park Brake and P (Park)
Mechanism Check . . . . . . . . 10-45
Wiper Blade Replacement . . . . . . . . . . . . . . 10-46
Windshield Replacement . . . 10-47
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-48
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-48
Halogen Bulbs . . . . . . . . . . . . . . 10-48
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . 10-48
Headlamps, Front Turn Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-49
Taillamps, Turn Signal, and Stoplamps . . . . . . . . . . . . . . . . 10-50
Replacement Bulbs . . . . . . . . . 10-50

Black plate (11,1)Chevrolet Corvette Owner Manual - 2011
Vehicle Care 10-11
A. Clutch Master CylinderReservoir (If Equipped).
See Hydraulic Clutch on
page 10‑24.
B. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10‑37.
C. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 10‑38.
D. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑29.
E. Engine Air Cleaner/Filter on
page 10‑24.
F. Power Steering Fluid Reservoir. See Power Steering Fluid on
page 10‑36. G. Engine Oil Fill Cap. See
“When
to Add Engine Oil” underBrake
Fluid on page 10‑41.
H. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil on page 10‑15.
I. Engine Compartment Fuse
Block on page 10‑52.
J. Passenger Compartment Air Filter (Out of View). See
Passenger Compartment Air
Filter on page 8‑7.
K. Battery on page 10‑43.
If the vehicle has the 6.2 L LS3
V8 engine (without the dry sump
engine oil tank) and you are facing
the front of the vehicle.

Black plate (13,1)Chevrolet Corvette Owner Manual - 2011
Vehicle Care 10-13
A. Intercooler. SeeCooling System
(Engine) on page 10‑28 or
Cooling System (Intercooler) on
page 10‑29.
B. Engine Air Cleaner/Filter on
page 10‑24.
C. Power Steering Fluid Reservoir and Cap. See Power Steering
Fluid on page 10‑36.
D. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑29.
E. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10‑37.
F. Clutch Master Cylinder Reservoir (If Equipped).
See Hydraulic Clutch on
page 10‑24.
G. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 10‑38. H. Passenger Compartment
Air Filter (Out of View).
See Passenger Compartment
Air Filter on page 8‑7.
I. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil on page 10‑15.
J. Dry Sump Engine Oil Tank. See “Changing Engine Oil
and Filter” Brake Fluid on
page 10‑41.
K. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil on page 10‑15.
L. Remote Positive (+) Terminal (Out of View). See Jump
Starting on page 10‑82.
M. Engine Compartment Fuse
Block on page 10‑52.
If the vehicle has the 6.2 L LS9
Supercharged V8 engine and you
are facing the front of the vehicle.

Black plate (15,1)Chevrolet Corvette Owner Manual - 2011
Vehicle Care 10-15
A.Engine Air Cleaner/Filter on
page 10‑24.
B. Power Steering Fluid Reservoir. See Power Steering Fluid on
page 10‑36.
C. Engine Compartment Fuse
Block on page 10‑52.
D. Remote Positive (+) Terminal (Out of View). See Jump
Starting on page 10‑82.
E. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil on page 10‑15.
F. Dry Sump Engine Oil Tank. See “Changing Engine Oil and Filter”
Engine Oil on page 10‑15.
G. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil on page 10‑15. H. Coolant Surge Tank and
Pressure Cap. See Engine
Coolant on page 10‑29.
I. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10‑37.
J. Brake Fluid Reservoir. See “Brake Fluid” under
Brake Fluid on page 10‑41.
K. Clutch Master Cylinder Reservoir. See Hydraulic
Clutch on page 10‑24.
If the vehicle has the 6.2 L LS3
V8 engine with the manual
transmission (with the dry sump
engine oil tank) or the 7.0 L LS7
V8 engine and you are facing the
driver side of the vehicle.Engine Oil
To ensure proper engine
performance and long life,
careful attention must be paid
to engine oil. Following these
simple, but important steps will
help protect your investment:
.Always use engine oil approved
to the proper specification and
of the proper viscosity grade.
See “Selecting the Right
Engine Oil.”
.Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil.”
.Change the engine oil at the
appropriate time. See Engine Oil
Life System on page 10‑22.
.Always dispose of engine oil
properly. See “What to Do With
Used Oil.”

Black plate (16,1)Chevrolet Corvette Owner Manual - 2011
10-16 Vehicle Care
Checking Engine Oil (Except
ZO6, ZR1, and Grand Sport)
If the CHECK OIL LEVEL message
displays on the Driver Information
Center (DIC), check the engine
oil level right away. For more
information, seeEngine Oil
Messages on page 5‑40. Check
the engine oil level regularly;
this is an added reminder.
It is a good idea to check the engine
oil level at each fuel fill. In order
to get an accurate reading, the
vehicle must be on level ground.
The engine oil dipstick handle
is a yellow loop. See Engine
Compartment Overview on
page 10‑10 for the location
of the engine oil dipstick. Obtaining an accurate oil level
reading is essential:
1. If the engine has been running
recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking your oil level too soon
after engine shut off will not
provide an accurate oil level
reading.
2. Pull the dipstick and clean it with a paper towel or cloth, then push
it back in all the way. Remove it
again, keeping the tip down, and
check the level.
When to Add Engine Oil
(Except ZO6, ZR1, and Grand
Sport)
If the oil is below the cross-hatched
area at the tip of the dipstick, add
one liter/quart of the recommended
oil and then recheck the level.
See “Selecting the Right Engine Oil”
for an explanation of what kind of
oil to use. For engine oil crankcase
capacity, see Capacities and
Specifications on page 12‑2.

Black plate (17,1)Chevrolet Corvette Owner Manual - 2011
Vehicle Care 10-17
SeeRacing or Other Competitive
Driving on page 9‑7 for additional
information on engine oil.
Notice: Do not add too much oil.
Oil levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that
you have an oil level above the
operating range, i.e. the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine could
be damaged. You should drain
out the excess oil or limit your
driving of the vehicle and seek a
service professional to remove
the excess amount of oil.
See Engine Compartment Overview
on page 10‑10 for the location of the
engine oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.Checking Engine Oil (ZO6,
ZR1, and Grand Sport)
A. Engine Oil Dipstick
B. Engine Oil Fill Cap
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground.
The engine oil dipstick handle is a
yellow loop. The dipstick is located
on the dry sump engine oil tank.
See Engine Compartment Overview
on page 10‑10 for the location of the
dry sump engine oil tank. These vehicles have a
racetrack‐ready dry sump
engine lubrication system.
This high‐performance system
operates differently than a standard
engine lubrication system and
requires a special procedure when
checking the engine oil level. Follow
this procedure closely when
checking the engine oil level.
The engine oil level must be
checked when the engine is warm.
Cold oil level in the dry sump tank
may not indicate the actual amount
of oil in the system. With this
system, engine oil is contained in
an external tank, separate from the
engine. Under normal operating
conditions, the oil pan under the
engine does not store any oil. If the
vehicle has been parked for an
extended period without the engine
being started, some oil will seep
back into the oil pan, reducing the
amount of oil held in the dry sump
tank and there could be no engine
oil at all showing on the dipstick.

Black plate (18,1)Chevrolet Corvette Owner Manual - 2011
10-18 Vehicle Care
This is normal since the dipstick is
designed to read engine oil level
only after the engine has run long
enough to reach normal operating
temperature. Do not add engine
oil based on cold engine dipstick
readings. The engine oil level on the
dipstick will also be inaccurate if
checked while the engine is running.
1. To obtain an accurate engineoil level reading, warm up the
engine to at least 80°C (175°F).
Cold oil will not give a correct oil
level reading.
2. Once the engine is warm, turn off the engine. Checking the oil
while the engine is running will
result in an incorrect oil level
reading.
3. Wait at least five minutes (but not more than 20 minutes)
to allow oil to drain and settle in
the engine. 4. Remove the dipstick from the
external engine oil tank and
clean it with a lint‐free paper
towel or a cloth. Re‐insert the
dipstick into the external oil tank,
pushing it all the way in until it
stops.
5. Remove the dipstick from the oil tank and read the level on the
cross‐hatched area. Oil levels
that fall in the cross‐hatched
area are normal.
When to Add Engine Oil
(ZO6, ZR1, and Grand Sport)
If the oil is below the cross-hatched
area at the tip of the dipstick, add
one liter/quart of the recommended
oil through the oil fill cap opening in
the oil tank and then recheck the level. See
“Selecting the Right
Engine Oil” for an explanation of
what kind of oil to use. For engine
oil crankcase capacity, see
Capacities and Specifications on
page 12‑2.
See Racing or Other Competitive
Driving on page 9‑7 for additional
information on engine oil.
Notice: Do not add too much oil.
Oil levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that
you have an oil level above the
operating range, i.e. the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine could
be damaged. You should drain
out the excess oil or limit your
driving of the vehicle and seek a
service professional to remove
the excess amount of oil.