2011 CHEVROLET IMPALA fuel cap

Black plate (19,1)Chevrolet Impala Owner Manual - 2011
In Brief 1-19
Engine Oil Life System
The engine oil life system calculates
engine oil life based on vehicle use
and displays a DIC message when
it is necessary to change the engine
oil and filter. The oil life system
should be reset to 100% only
following an oil change.
Resetting the Oil Life System
1. Display OIL LIFE REMAININGon the DIC.
2. Press and hold the SET/RESET button on the DIC for more than
five seconds. The oil life will
change to 100%.
See Engine Oil Life System on
page 10‑10.
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
See Fuel E85 (85% Ethanol) on
page 9‑37. For all other vehicles, use only the unleaded gasoline
described under
Recommended
Fuel on page 9‑35.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.Avoid fast starts and accelerate
smoothly.
.Brake gradually and avoid
abrupt stops.
.Avoid idling the engine for long
periods of time.
.When road and weather
conditions are appropriate, use
cruise control.
.Always follow posted speed
limits or drive more slowly when
conditions require.
.Keep vehicle tires properly
inflated.
.Combine several trips into a
single trip.
.Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
.Follow recommended scheduled
maintenance.
Roadside Assistance
Program
U.S.: 1-800-243-8872
TTY Users: 1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new Chevrolet,
you are automatically enrolled in the
Roadside Assistance program. This
program provides technically trained
advisors who are available 24 hours
a day, 365 days a year, to give
minor repair information or make
towing arrangements.
For more information see Roadside
Assistance Program on page 13‑7.

Black plate (13,1)Chevrolet Impala Owner Manual - 2011
Instruments and Controls 5-13
When the ignition is on, the fuel
gauge indicates about how much
fuel is left in the fuel tank.
An arrow on the fuel gauge
indicates the side of the vehicle
the fuel door is on.
Here are four things that some
owners ask about. None of these
show a problem with the fuel gauge:
.At the gas station, the gas pump
shuts off before the gauge
reads full.
.It takes a little more or less fuel
to fill up than the gauge
indicated. For example, the
gauge may have indicated the
tank was half full, but it actually
took a little more or less than
half the fuel tank's capacity to
fill the tank.
.The gauge moves a little when
while turning a corner or
speeding up.
.The gauge does not go back to
empty when the ignition is
turned off.
Engine Coolant
Temperature Gauge
English
Metric
This gauge shows the engine
coolant temperature. If the
gauge pointer moves toward the
“H” (United States) or torward the
shaded thermostat (Canada), it
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 10‑19 for more information.

Black plate (18,1)Chevrolet Impala Owner Manual - 2011
5-18 Instruments and Controls
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.
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, when
it is safe to do so, stop the vehicle.
Find a safe place to 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.
An emission system malfunction
might be corrected:
.Make sure the fuel cap is fully
installed. See Filling the Tank on
page 9‑38. 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.
.If the vehicle has been driven
through a deep puddle of water,
the vehicle's electrical system
might be wet. The condition is
usually corrected when the
electrical system dries out.
A few driving trips should turn
the light off.
.Make sure to fuel the vehicle
with quality fuel. Poor fuel quality
causes the engine not to run as
efficiently as designed and can
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 9‑35.
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.

Black plate (32,1)Chevrolet Impala Owner Manual - 2011
5-32 Instruments and Controls
Fuel System Messages
FUEL LEVEL LOW
This message displays when your
vehicle is low on fuel. Refill the fuel
tank as soon as possible. SeeFuel
Gauge on page 5‑12 andFilling the
Tank on page 9‑38 for more
information.
TIGHTEN GAS CAP
This message may be displayed if
the gas cap is not on, or is not fully
tightened. Check the gas cap to
ensure that it is on properly.
See Filling the Tank on page 9‑38
for more information.
Key and Lock Messages
REPLACE BATTERY IN
REMOTE KEY
This message displays when the
battery in the Remote Keyless
Entry (RKE) transmitter needs to
be replaced. To replace the battery, see
“Battery Replacement” under
Remote Keyless Entry (RKE)
System Operation on page 2‑3.
Lamp Messages
AUTOMATIC LIGHT
CONTROL OFF
This message displays when the
automatic headlamps are turned off.
See Exterior Lamp Controls on
page 6‑2 for more information.
AUTOMATIC LIGHT
CONTROL ON
This message displays when the
automatic headlamps are turned on.
SeeExterior Lamp Controls on
page 6‑2 for more information.
TURN SIGNAL ON
This message displays as a
reminder to turn off the turn signal
if you drive your vehicle for more
than about 1.2 km (0.75 mile) with
a turn signal on. See Turn and
Lane-Change Signals on page 6‑5. This message displays and a chime
sounds only when the ignition is in
ON/RUN. The message will not
disappear until the turn signal is
manually turned off, or a turn is
completed.
Ride Control System
Messages
SERVICE STABILITRAK
If your vehicle has Electronic
Stability Control (ESC), this
message displays if there has been
a problem detected with ESC. The
ESC/TCS light also appears on the
instrument panel cluster. See
Electronic Stability Control (ESC) on
page 9‑31
for more information.
If this message turns on while you
are driving, pull off the road as
soon as possible and stop carefully.
Try resetting the system by turning
the ignition off and then back on.

Black plate (35,1)Chevrolet Impala Owner Manual - 2011
Driving and Operating 9-35
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.
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
SeeFuel E85 (85% Ethanol) on
page 9‑37. For all other vehicles,
use only the unleaded gasoline
described under Recommended
Fuel on page 9‑35.
Recommended Fuel
Use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, an audible knocking noise,
commonly referred to as spark
knock, might be heard when driving.
If this occurs, use a gasoline rated
at 87 octane or higher as soon as
possible. If heavy knocking is heard
when using gasoline rated at
87 octane or higher, the engine
needs service.

Black plate (37,1)Chevrolet Impala Owner Manual - 2011
Driving and Operating 9-37
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
10% 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
the life of spark plugs and the
performance of the emission control
system could be affected. The
malfunction indicator lamp might
turn on. If this occurs, return to your
dealer for service.Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
For all other vehicles, use only the
unleaded gasoline described under
Recommended Fuel on page 9‑35.
We encourage the use of E85 in
vehicles that are designed to use it.
The ethanol in E85 is a “renewable”
fuel, meaning it is made from
renewable sources such as corn
and other crops.
Many service stations will not have
an 85% ethanol fuel (E85) pump
available. The U.S. Department of
Energy has an alternative fuels
website (www.eere.energy.gov/afdc/
infrastructure/locator.html) that can
help you find E85 fuel. Those
stations that do have E85 should
have a label indicating ethanol
content. Do not use the fuel if the
ethanol content is greater than 85%.

Black plate (39,1)Chevrolet Impala Owner Manual - 2011
Driving and Operating 9-39
The tethered fuel cap is located
behind a hinged fuel door on the
driver side of the vehicle. If the
vehicle has E85 fuel capability, the
fuel cap will be yellow and state
that E85 or gasoline can be used.
SeeFuel E85 (85% Ethanol) on
page 9‑37.
To remove the fuel cap, turn it
slowly counterclockwise. While refueling, hang the tethered
fuel cap on the hook on the inside of
the fuel door.
{WARNING
Fuel can spray out on you if you
open the fuel cap too quickly.
If you spill fuel and then
something ignites it, you could be
badly burned. This spray can
happen if the tank is nearly full,
and is more likely in hot weather.
Open the fuel cap slowly and wait
for any hiss noise to stop. Then
unscrew the cap all the way.
Be careful not to spill fuel. Do not
top off or overfill the tank and wait a
few seconds after you have finished
pumping before removing the
nozzle. Clean fuel from painted
surfaces as soon as possible. See
“Washing the Vehicle”
in
Exterior Care.
When replacing the fuel cap, turn it
clockwise until it clicks. Make sure
the cap is fully installed. The
diagnostic system can determine if
the fuel cap has been left off or
improperly installed. This would
allow fuel to evaporate into the
atmosphere. See Malfunction
Indicator Lamp on page 5‑17.

Black plate (40,1)Chevrolet Impala Owner Manual - 2011
9-40 Driving and Operating
The TIGHTEN GAS CAP message
displays on the Driver Information
Center (DIC) if the fuel cap is not
properly installed. SeeFuel System
Messages on page 5‑32 for more
information.
{WARNING
If a fire starts while you are
refueling, do not remove the
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
Notice: If a new fuel cap is
needed, be sure to get the right
type of cap from your dealer.
The wrong type fuel cap might
not fit properly, might cause the
malfunction indicator lamp to
light, and could damage the fuel
tank and emissions system.
See Malfunction Indicator Lamp
on page 5‑17.
Filling a Portable Fuel
Container
{WARNING
Never fill a portable fuel container
while it is in the vehicle. Static
electricity discharge from the
container can ignite the fuel
vapor. You can be badly burned
and the vehicle damaged if this
occurs. To help avoid injury to you
and others:
.Dispense fuel only into
approved containers.
.Do not fill a container while it
is inside a vehicle, in a
vehicle's trunk, pickup bed,
or on any surface other than
the ground.
(Continued)
WARNING (Continued)
.Bring the fill nozzle in contact
with the inside of the fill
opening before operating the
nozzle. Contact should be
maintained until the filling is
complete.
.Do not smoke while
pumping fuel.
.Do not use a cellular phone
while pumping fuel.