2016 CHEVROLET IMPALA fuel cap

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
10 Driving and Operating
Warning (Continued)
gas is ignited. If you suspect a
leak, do not start the engine or
drive the vehicle. Have the
vehicle immediately towed,
inspected, and repaired by an
authorized GM dealer.
Before filling either fuel tank, turn off
the engine.
The gasoline tank is filled through
the standard fill pipe. See “Filling
the Tank” under“Fuel” in the owner
manual.
The CNG fill receptacle is behind
the fuel door on the passenger side
above the gasoline cap.
Refueling Procedure
There are two methods of refueling:
fast fill or time fill. Fast fill is
normally used in fuel stations for
natural gas vehicles. It takes about
two to five minutes to fill up the fuel
tank. Time fill is done with a
refueling appliance, including
residential appliances, or a time-fill
post provided by the fleet operator.
Refueling time varies depending
upon the refueling system used —
consult with the refueling station
attendant or system provider.
Always observe all safety
recommendations and operating
instructions on the refueling
equipment. If a 24 800 kPa
(3,600 psig) nozzle is not available,
a 20 684 kPa (3,000 psig) nozzle
may be connected to the vehicle.
A fuel nozzle less than 7.6 cm (3 in)
long may be difficult to disengage
after dispensing CNG. During fueling, CNG needs to be
delivered to the vehicle at the
appropriate pressure in relationship
to the ambient temperature. This
can be done automatically by a
temperature compensation system
on the CNG fuel dispenser or
manually by stopping the CNG fill at
a recommended pressure related to
the ambient temperature
compensation chart. GM
recommends that customers use
CNG fueling stations that have a
temperature compensation system
whenever possible. Check with the
fuel station. If one is not available,
see the temperature compensation
chart that follows in this section to
choose the appropriate fill pressure
for the ambient temperature. In
addition, fill only to the pressure
level for the lowest ambient
temperature anticipated during
fueling.
Leaving a vehicle connected to a
time fill station can cause the tank
to be filled to a higher pressure than
recommended, especially when
outside temperatures fluctuate.
Disconnect the vehicle from the time

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
12 Driving and Operating
Depending on CNG fill station
equipment/performance, CNG fill
volume will vary. This will affect
overall vehicle range.Put the vehicle into P (Park) and
turn off the engine prior to refueling.
Remove the dust cap from the
receptacle, clean off any dirt or
debris on the receptacle, and followthe refueling instructions on the
pump or provided by the station
operator.
Refueling will stop automatically
when the tank is full. Wait for the
high pressure fuel to be purged from
the hose before disconnecting. See
the station operator for information
on how the line is purged. To
disconnect the vehicle from the
refueling station, remove the nozzle
from the fill receptacle.
A momentary release of CNG will
occur when the nozzle is released.
This is normal.
Put the fill valve dust cap on
securely and close the fuel
filler door.
If fuel or vapor is heard or seen
leaking from the nozzle-fill
receptacle connection, stop
refueling immediately. Dirt or other
debris may be preventing a positive
connection. Turn off the refueling
dispenser, disconnect the nozzle,
and inspect the fill receptacle for a
missing, damaged, dirty, or worn
O-ring. Reconnect the refueling

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Service and Maintenance 23
Maintenance Records
Natural Gas Vehicle (CNG) Service Records
Vehicle Identification Number (VIN)CNG Tank Information
Size Capacity* Serial #Exp. Date
* Total Container Water Volume

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Technical Data 25
Technical Data
Vehicle Data
Capacities andSpecifications . . . . . . . . . . . . . . . . 26

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
26 Technical Data
Vehicle Data
Capacities and Specifications
ApplicationTotal Capacities
Canada
200 Bar @ 15°C U.S.
3,600 psig @ 70°F
CNG Fuel Tank Capacity ¹ 7.0 GGE7.8 GGE
¹ GGE (Gasoline Gallon Equivalent)

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Index 27
IndexA
Accessories and Modifications . . . 16
Appearance CareExterior . . . . . . . . . . . . . . . . . . . . . . . . . 20
B
Battery - North America . . . . . . . . . . 19
C
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 19
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . 26
Check Malfunction Indicator EngineLight . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . 20
Components Fuel System . . . . . . . . . . . . . . . . . . . . 17
Control
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . 8
D
Driver Information Center (DIC) . . . 5
DrivingVehicle Load Limits . . . . . . . . . . . . . . 7
E
EngineCheck and Service EngineSoon Light . . . . . . . . . . . . . . . . . . . . . 4
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . 7
F
Flat Tire
Changing . . . . . . . . . . . . . . . . . . . . . . . 19
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Filling the Tank . . . . . . . . . . . . . . . . . . 9
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Low Fuel Warning Light . . . . . . . . . . 5
System Messages . . . . . . . . . . . . . . . 6
Fuel System Components . . . . . . . 17
Fuel System Leak . . . . . . . . . . . . . . . 14
G
Gauges
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
I
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . 19

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
28 Index
L
LampsMalfunction Indicator . . . . . . . . . . . . 4
Leak Fuel System . . . . . . . . . . . . . . . . . . . . 14
Lights Low Fuel Warning . . . . . . . . . . . . . . . 5
Low Fuel Warning Light . . . . . . . . . . . 5
M
Maintenance Schedule . . . . . . . . . . 21
Malfunction Indicator Lamp . . . . . . . 4
Messages Fuel System . . . . . . . . . . . . . . . . . . . . . 6
N
Natural GasVehicle Service Records . . . . . . . . 23
Natural Gas Vehicle (CNG) Service Records . . . . . . . . . . . . . . . 23
P
Proposition 65 Warning,California . . . . . . . . . . . . . . . . . . . . . . . 19
S
ServiceAccessories andModifications . . . . . . . . . . . . . . . . . . 16
Doing Your Own Work . . . . . . . . . . 16 Service (cont'd)
Engine Soon Light . . . . . . . . . . . . . . . 4
Service and Maintenance Natural Gas Vehicle (CNG)
Service Records . . . . . . . . . . . . . . 23
Specifications and Capacities . . . . 26
Starting the Engine . . . . . . . . . . . . . . . 7
Supplement Using . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
T
Tires
Changing . . . . . . . . . . . . . . . . . . . . . . . 19
Towing
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . 8
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . 15
U
Using This Supplement . . . . . . . . . . . 2
V
Vehicle
Canadian Owners . . . . . . . . . . . . . . . 2
Load Limits . . . . . . . . . . . . . . . . . . . . . . 7