2016 CHEVROLET IMPALA Bifuel Manual

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
16 Vehicle Care
Vehicle Care
General Information
Accessories andModifications . . . . . . . . . . . . . . . . . 16
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . 16
Fuel System Components . . . . . 17
Wheels and Tires
Tire Changing . . . . . . . . . . . . . . . . . 19
Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . 19
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . 20
General Information
Accessories and
Modifications
Adding accessories or making
modifications to the vehicle,
including to the CNG tank shields,
could cause damage and would not
be covered by the vehicle warranty.
If a CNG tank needs service or
repair, have only a qualified
technician perform the work. See
“Accessories and Modifications” in
the owner manual.
Vehicle Checks
Doing Your Own
Service Work
{Warning
Never try to do your own service
work on the Compressed Natural
Gas (CNG) fuel system. The CNG
fuel system operates under high
pressure. You can be injured and
the vehicle can be damaged if
you try to do your own service
work. Service and repair of this
system should only be performed
by a qualified dealer.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Vehicle Care 17
Fuel System Components
{Warning
Tampering with, or improperly
maintaining the high-pressure fuel
system can cause a dangerous
condition in which serious injury
or death may result. Never
attempt to modify the fuel system,
and always have the fuel system
repaired and maintained by a
qualified dealer.
CNG fuel system components
include the fuel tank in the trunk of
the vehicle, a fuel pressure
regulator, an in-tank fuel shutoff
valve, high pressure fuel lines,
electronically controlled multipoint
fuel injectors, and other equipment. CNG fuel system components
comply with appropriate safety
standards. Never modify or replace
any original CNG components or
parts with those specified for a
gasoline-powered vehicle. Improper
parts or components can damage
the vehicle fuel system and affect
the vehicle safety and performance.
Do not modify, tamper with,
or perforate the CNG tank shield.
Damage to the CNG fuel system
can result.
There is an identifying blue
diamond-shaped CNG label on the
rear of the vehicle. Do not remove
this label. This label is necessary for
compliance with NFPA-52 or CSA
B109 regulations. Driving without
this label may violate the laws or
regulations in some jurisdictions.
Replacement labels can be ordered
from your dealer.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
18 Vehicle Care
Manual Shutoff Valve
Locate the manual shutoff valve so
that it can be found quickly if it is
needed.
The manual shutoff valve is on the
driver side of the vehicle in front of
the rear tire.
A label is on the outside of the
vehicle near the manual shutoff
valve. Do not remove this label.To turn off the valve, turn the lever
one-quarter turn clockwise. Turn it
counterclockwise to turn the valve
back on.
Turn off the valve if a fuel leak is
suspected or the vehicle is involved
in an accident. This valve, when
turned, will stop CNG flow to the
engine.High Pressure CNG Fuel Filter
The high pressure CNG fuel filter is
under the rear of the vehicle. This
filter must have the water drained
and the filter element must also be
replaced at specific service
intervals. See
Maintenance
Schedule 021.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Vehicle Care 19
Low Pressure CNG Oil Separator
The low pressure CNG oil separator
is under the hood on the driver side
of the vehicle. This filter must have
the oil drained periodically. See
Maintenance Schedule021.
Wheels and Tires
Tire Changing
Storing a Flat Tire
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
1. Replace the foam, jack, and tools as instructed in the owner
manual.
2. Replace the floor cover.
3. Place the tire, lying flat, in the trunk.
Jump Starting
Jump Starting - North
America
{Warning
If the CNG fuel system has a
leak, a spark from the jumper
cables could ignite the natural
gas, causing injury or death. Do
not jump start the vehicle if you
smell a persistent natural gas
odor or hear a continual hissing
sound. Close the manual shutoff
valve, and have the vehicle towed
to an authorized GM dealer for
service. See Fuel System
Components 017.
See “Jump Starting - North America”
in the owner manual.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
20 Vehicle Care
Appearance Care
Exterior Care
Finish Damage
{Warning
Heating the vehicle to above 82 °
C (180 °F) may damage the
Compressed Natural Gas (CNG)
tanks and may cause the fuel
pressure relief device to open and
release CNG. If an ignition source
is present, this could create a risk
of fire or explosion.
CNG tank(s) must be drained by
a qualified technician prior to heat
curing a painted body repair.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
Service and Maintenance 21
Service and
Maintenance
Maintenance Schedule
Maintenance Schedule . . . . . . . . 21
Maintenance Records
Natural Gas Vehicle (CNG)Service Records . . . . . . . . . . . . . . 23
Maintenance
Schedule
{Warning
Do not operate the vehicle
without CNG tank shields in
place. Operation with a CNG tank
shield removed may result in tank
damage that could result in a
rupture or possible explosion of
the tank. You or others could be
injured or even killed. If you must
remove a tank shield for any
reason, e.g., tank inspection or
vehicle repair, always reinstall the
shield before operating the
vehicle.
{Warning
Keeping a CNG fuel tank in
service after the tank service
expiration date is dangerous and
is prohibited by federal law. The
tank may no longer withstand the
CNG fuel system operating
pressure. You could be severely
injured or killed. Take the vehicle
to an authorized GM dealer to
have the tank replaced.
See instructions on fuel
container for inspection and
service life.
Inspect the fuel tank every three
years and replace it after 15 years.
The fuel tank expiration date is on
the labels near the fuel tank and fuel
fill areas. Refer to the maintenance
intervals following.

Chevrolet Impala Bi-Fuel (Gasoline/CNG) Supplement (GMNA-Localizing-U.
S/Canada-9087624) - 2016 - CRC - 8/17/15
22 Service and Maintenance
This CNG vehicle is designed for
routine maintenance (fluids, filters,
etc.) according to the original
specifications as provided in the
owner manual for gasoline fuel
vehicles. See the owner manual for
maintenance service intervals and
fluid specifications.
See your dealer or other qualified
repair facility for required service
and maintenance. Your dealer has
the necessary training and parts to
repair the vehicle.
Every 17 500 km/11,000 Miles
.Replacement of the high
pressure CNG filter. See your
dealer. Every 48 000 km/30,000 Miles
.
Spark plug replacement and
spark plug wire inspection. An
Emission Control Service.
Every 60 000 km/37,500 Miles
. Visual inspection of the CNG
fuel tank by a qualified
technician or authorized GM
dealer (or 36 months,
whichever occurs first).
For more information,
see your dealer or visit:
http://www.csa-international.org/
{Warning
The CNG fuel system must be
inspected by a certified inspector
if the vehicle is involved in a
collision or fire. Have the CNG fuel system and
tank inspected if the vehicle has
been involved in a collision or
fire. The fuel tank must be
replaced 15 years after
manufacture. The expiration
date of the fuel tank is on a label
on the fuel tank and on a label in
the fill area. Have an authorized
GM dealer replace the fuel tank.
Do not reuse an old fuel tank.
. Service of the low pressure oil
separator (or 36 months,
whichever occurs first). See your
dealer.
. If there are cuts or corrosion in
the flex line jacket, replace
the line.

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