2012 CHEVROLET CORVETTE C6 fuel

Black plate (29,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-29
The repairs would not be
covered by the vehicle warranty.
Be sure the engine is not running
at high speed when shifting the
vehicle.
D (Drive):This position is for
normal driving. It provides the best
fuel economy. If you need more
power for passing, push the pedal
down to achieve the desired level of
acceleration.
Downshifting the transmission in
slippery road conditions could result
in skidding. See “Skidding”under
Loss of Control on page 9‑5.
S (Sport Mode): When in
S (Sport Mode), the transmission will
work as an automatic until you use
the Manual Paddle Shift Controls,
which activates driver manual gear
selection. See Manual Mode on
page 9‑29. While in S (Sport Mode),
the transmission will have more
noticeable upshifts for sportier
vehicle performance.Manual Mode
Manual Paddle Shift
While in S (Sport Mode), the paddles
located on the steering wheel can
be used to manually up-shift or
down-shift the transmission.
The Manual Paddle Shift system is
activated from S (Sport Mode) by
pushing the paddle, above the
steering wheel spokes, to up-shift
to the next gear, or pulling on the
paddle, behind the steering wheel
spokes, to down-shift to the
next gear. When accelerating the vehicle from
a stop in snowy and icy conditions,
you may want to shift to 2 (Second)
or 3 (Third) gear. A higher gear
allows you to gain more traction on
slippery surfaces. If traction control
is active, upshifts are delayed to
increase your control of the vehicle.
See
Traction Control System (TCS)
on page 9‑36 Traction Control
System (TCS).
The Manual Paddle Shift system
can be deactivated by moving the
shift lever from S (Sport Mode)
back to D (Drive), or by holding
either up‐shift paddle for more than
one second.
The driver may choose to briefly
activate the Manual Paddle Shift
system while in D (Drive). Tapping
either the upshift or downshift
controls will place the transmission
in Manual Paddle Shift mode.

Black plate (31,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-31
The vehicle speeds required for
Manual Paddle Shift up-shifts
depend on several vehicle inputs,
which will vary the allowed up-shift
speed by a few km/h (mph).
For vehicles with a 2.56:1 Axle
Ratio (RPO GM8)
.Up-shifts to 4 (Fourth) gear
require approximately 35 km/h
(22 mph).
.Up-shifts to 5 (Fifth) gear require
approximately 45 km/h (28 mph).
.Up-shifts to 6 (Sixth) gear
require approximately 65 km/h
(41 mph).
To prevent damage to the
powertrain, Manual Paddle
downshifts to a lower gear cannot
be done above certain speeds. The maximum speed allowed for
downshifting of gears 1 (First)
through 4 (Fourth) are:
.Into 4 (Fourth) gear over
250 km/h (155 mph).
.Into 3 (Third) gear over
188 km/h (117 mph).
.Into 2 (Second) gear over
120 km/h (75 mph).
.Into 1 (First) gear over
68 km/h (42 mph).
For vehicles with a 2.73:1 Axle
Ratio (RPO GU2)
.Up-shifts to 4 (Fourth) gear
require approximately 31 km/h
(19 mph).
.Up-shifts to 5 (Fifth) gear require
approximately 39 km/h (24 mph).
.Up-shifts to 6 (Sixth) gear
require approximately 57 km/h
(35 mph). To prevent damage to the
powertrain, Manual Paddle
downshifts to a lower gear cannot
be done above certain speeds.
The maximum speed allowed for
downshifting of gears 1 (First)
through 4 (Fourth) are:
.Into 4 (Fourth) gear over
234 km/h (145 mph).
.Into 3 (Third) gear over
176 km/h (109 mph).
.Into 2 (Second) gear over
113 km/h (70 mph).
.Into 1 (First) gear over
64 km/h (40 mph).
If the driver does not request an
upshift as the engine speed
approaches fuel shut off rpm, the
engine speed will be limited to
protect the engine. See Tachometer
on page 5‑12 for more information.

Black plate (33,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-33
Shift Speeds
(Manual Transmission)
{WARNING
If you skip a gear when you
downshift, you could lose control
of the vehicle. You could injure
yourself or others. Do not shift
down more than one gear at a
time when you downshift.This chart shows when to shift to the next higher gear for the best fuel
economy.
Manual Transmission RecommendedShift Speeds in km/h (mph)
Engine Acceleration Shift Speed
1 to 2 2 to 3 3 to 4 4 to 5 5 to 6
All Engines 24 (15) 40 (25) 64 (40) 72 (45) 80 (50)
If the engine speed drops below
900 rpm, or if the engine is not
running smoothly, you should
downshift to the next lower gear.
You may have to downshift two or
more gears to keep the engine
running smoothly or for good engine
performance. Notice:
When shifting gears, do
not move the shift lever around
unnecessarily. This may damage
the transmission. Shift directly
into the next gear.

Black plate (34,1)Chevrolet Corvette Owner Manual - 2012
9-34 Driving and Operating
One to Four Shift Light
(Manual Transmission)
When this light comes on, you can
only shift from 1 (First) to 4 (Fourth)
instead of 1 (First) to 2 (Second).
SeeOne-to-Four Shift Light (Manual
Transmission) on page 5‑22 for
more information.
Downshifting
(Manual Transmission)
Do not downshift into the gear
shown below at a speed greater
than shown in the table:
1 (First) 80 km/h (50 mph)
2 (Second) 119 km/h (74 mph) 3 (Third) 163 km/h (101 mph)
4 (Fourth) 209 km/h (130 mph)
Notice: If you skip more than one
gear when you downshift, or if
you race the engine when you
release the clutch pedal while
downshifting, you could damage
the engine, clutch, driveshaft or
the transmission. Do not skip
gears or race the engine when
downshifting. The six-speed transmission has a
spring that centers the shift lever
near 3 (Third) and 4 (Fourth).
This spring helps you know which
gear you are in when you are
shifting. Be careful when shifting
from 1 (First) to 2 (Second) or
downshifting from 6 (Sixth) to
5 (Fifth). The spring will try to pull
the shift lever toward 4 (Fourth) and
3 (Third). Make sure you move the
lever into 2 (Second) or 5 (Fifth).
If you let the shift lever move in the
direction of the pulling, you may end
up shifting from 1 (First) to 4 (Fourth)
or from 6 (Sixth) to 3 (Third).
If the driver does not upshift as
the engine speed approaches fuel
shut off RPM, the engine speed will
be limited to protect the engine.
See
Tachometer on page 5‑12 for
more information.

Black plate (48,1)Chevrolet Corvette Owner Manual - 2012
9-48 Driving and Operating
Fuel
Use of the recommended fuel is
an important part of the proper
maintenance of this vehicle. To help
keep the engine clean and maintain
optimum vehicle performance, we
recommend the use of gasoline
advertised as TOP TIER Detergent
Gasoline.
Look for the TOP TIER label on the
fuel pump to ensure gasoline meets
enhanced detergency standards
developed by auto companies. A list
of marketers providing TOP TIER
Detergent Gasoline can be found at
www.toptiergas.com.
The eighth digit of the Vehicle
Identification Number (VIN) shows
the code letter or number that
identifies the vehicle's engine.
The VIN is at the top left of the
instrument panel. SeeVehicle
Identification Number (VIN) on
page 12‑1.
Recommended Fuel
If the vehicle has the 6.2L V8 engine
(VIN Code W), use premium
unleaded gasoline with a posted
octane rating of 91 or higher.
You can also use regular unleaded
gasoline rated at 87 octane or
higher, but the vehicle's acceleration
could be slightly reduced, and a
slight audible knocking noise,
commonly referred to as spark
knock, might be heard. If the octane
is less than 87, a heavy knocking
noise might be heard when driving.
If this occurs, use a gasoline rated
at 87 octane or higher as soon as
possible. Otherwise, you could
damage the engine. If heavy
knocking is heard when using
gasoline rated at 87 octane or
higher, the engine needs service.
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.

Black plate (49,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-49
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
(U.S. and Canada Only)
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. See
Fuel 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 5‑19. 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
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 (50,1)Chevrolet Corvette Owner Manual - 2012
9-50 Driving and Operating
Fuel Additives
To provide cleaner air, all gasolines
in the United States are now
required to contain additives that
help prevent engine and fuel system
deposits from forming, allowing the
emission control system to work
properly. In most cases, nothing
should have to be added to the fuel.
However, some gasolines contain
only the minimum amount of
additive required to meet U.S.
Environmental Protection Agency
regulations. To help keep fuel
injectors and intake valves clean
and avoid problems due to dirty
injectors or valves, look for gasoline
that is advertised as TOP TIER
Detergent Gasoline. Look for the
TOP TIER label on the fuel pump to
ensure gasoline meets enhanced
detergency standards developed
by the auto companies. A list of
marketers providing TOP TIER
Detergent Gasoline can be found
at www.toptiergas.com.For customers who do not use TOP
TIER Detergent Gasoline regularly,
one bottle of GM Fuel System
Treatment PLUS, added to the fuel
tank at every engine oil change,
can help clean deposits from fuel
injectors and intake valves. GM Fuel
System Treatment PLUS is the only
gasoline additive recommended by
General Motors. It is available at
your dealer.
Gasolines containing oxygenates,
such as ethers and ethanol,
and reformulated gasolines
might be available in your area.
We recommend that you use these
gasolines, if they comply with the
specifications described earlier.
However, E85 (85% ethanol) and
other fuels containing more than
15% ethanol must not be used in
vehicles that were not designed for
those fuels.
Notice:
This vehicle was not
designed for fuel that contains
methanol. Do not use fuel
containing methanol. It can
corrode metal parts in the fuel
system and also damage plastic
and rubber parts. That damage
would not be covered under the
vehicle warranty.
Some gasolines that are
not reformulated for low
emissions can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant
where you buy gasoline whether the
fuel contains MMT. We recommend
against the use of such gasolines.
Fuels containing MMT can reduce
spark plug life and affect emission
control system performance.
The malfunction indicator lamp
might turn on. If this occurs, return
to your dealer for service.

Black plate (51,1)Chevrolet Corvette Owner Manual - 2012
Driving and Operating 9-51
Filling the Tank
{WARNING
Fuel vapor burns violently and a
fuel fire can cause bad injuries.
To help avoid injuries to you and
others, read and follow all the
instructions on the fuel pump
island. Turn off the engine when
refueling. Do not smoke near fuel
or when refueling the vehicle.
Do not use cellular phones.
Keep sparks, flames, and
smoking materials away from
fuel. Do not leave the fuel pump
unattended when refueling the
vehicle. This is against the law in
some places. Do not re-enter the
vehicle while pumping fuel. Keep
children away from the fuel pump;
never let children pump fuel.
The tethered fuel cap is located
behind a hinged fuel door on the
driver side of the vehicle.The fuel door release button is
located on the instrument panel
to the left of the steering wheel.
Push the button to release the
fuel door.