2012 CHEVROLET IMPALA open gas tank

Black plate (38,1)Chevrolet Impala Owner Manual - 2012
9-38 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 (41,1)Chevrolet Impala Owner Manual - 2012
Driving and Operating 9-41
{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
Exterior Care on page 10‑69. 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 5‑16.
The TIGHTEN GAS CAP message
displays on the Driver Information
Center (DIC) if the fuel cap is not
properly installed. See Fuel 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 of 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 5‑16.

Black plate (5,1)Chevrolet Impala Owner Manual - 2012
INDEX i-5
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36Additives . . . . . . . . . . . . . . . . . . . . . 9-38
E85 (85% Ethanol) . . . . . . . . . . . 9-39
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 9-42
Filling the Tank . . . . . . . . . . . . . . . 9-40
Fuels in Foreign Countries . . . . 9-37
Gasoline Specifications . . . . . . . 9-37
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Recommended . . . . . . . . . . . . . . . 9-37
Requirements, California . . . . . 9-37
System Messages . . . . . . . . . . . . 5-32
Fuel Economy Driving . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Fuses Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-30
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-30
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-34G
Garage Door Opener . . . . . . . . . . 5-43
Programming . . . . . . . . . . . . . . . . . 5-43
Gasoline Specifications . . . . . . . . . . . . . . . . . 9-37
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 5-12
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Odometer . . . . . . . . . . . . . . . . . . . . . 5-11
Speedometer . . . . . . . . . . . . . . . . . 5-11
Tachometer . . . . . . . . . . . . . . . . . . . 5-11
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . . 5-9
General Information Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-42
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-5
H
Halogen Bulbs . . . . . . . . . . . . . . . . 10-25
Hazard Warning Flashers . . . . . . . 6-4
Head Restraints . . . . . . . . . . . . . . . . 3-2
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . 10-25
Bulb Replacement . . . . . . . . . . 10-25
Daytime Running Lamps/Automatic Headlamp
System . . . . . . . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-25
High-Beam On Light . . . . . . . . . . 5-23
High/Low Beam Changer . . . . . . 6-2
Heated Front Seats . . . . . . . . . . . . . 3-7
Heated Mirrors . . . . . . . . . . . . . . . . . 2-15
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 9-20
Heating and Air Conditioning . . . 8-1
High-Beam On Light . . . . . . . . . . . 5-23
Highway Hypnosis . . . . . . . . . . . . . . 9-7