ECU CHEVROLET EXPRESS CARGO VAN 2016 1.G CNG Manual
[x] Cancel search | Manufacturer: CHEVROLET, Model Year: 2016, Model line: EXPRESS CARGO VAN, Model: CHEVROLET EXPRESS CARGO VAN 2016 1.GPages: 30, PDF Size: 0.63 MB
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Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/18/15
Driving and Operating 5
Driving and
Operating
Driving Information
Vehicle Load Limits . . . . . . . . . . . . . 5
Starting and Operating
Starting the Engine . . . . . . . . . . . . . . 5
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Filling the Tank . . . . . . . . . . . . . . . . . . 7
Fuel System Leak . . . . . . . . . . . . . 10
Trailer Towing
Trailer Towing . . . . . . . . . . . . . . . . . . 13
Driving Information
Vehicle Load Limits
Caution
Loose items stored in the cargo
area may damage the fuel tank
and fuel system components.
Secure all items in the cargo area
to avoid shifting and any damage
to the fuel tank and fuel tank
components.
Starting and
Operating
Starting the Engine
Starting the engine in a CNG
vehicle is similar to starting a
gasoline engine. See“Starting the
Engine” in the owner manual.
Cold Weather Starting
If the outside temperature is below
−20 °C (−4 °F), the engine may be
harder to start, or may not start until
the temperature increases.
Using the engine heater may make
it easier to start. See “Engine
Heater” in the owner manual.
High Altitude Cold Starting
An engine is harder to start in cold
weather. The thinner air found
above 1 600 m (5,000 ft) also makes
the vehicle harder to start. The
unique properties of CNG make it
even more difficult or impossible to
start at high altitudes if
Page 11 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/18/15
10 Driving and Operating
use with CNG are included with the
vehicle. See an authorized GM
dealer for additional O-rings.
{Warning
Attempting to fill a CNG fuel
system that has a missing or
damaged O‐ring is dangerous.
Natural gas can leak. If the
natural gas is ignited, you or
others could be injured. Replace
the O‐ring before filling the tank.
To replace the fill valve O-ring: 1. Carefully remove the O-ring from the groove in the fill valve.
A small flat-blade or pointed
tool can be used.
2. Make sure the groove is clean and free of dirt and debris.
3. Install the new O-ring in the groove in the fill valve. Make
sure the O-ring is properly
seated in the groove.
Refueling will stop automatically
when the tank is full. To disconnect
the vehicle from the refueling station, remove the nozzle from the
fill valve. A hissing sound may be
heard as a small amount of natural
gas escapes. This is normal.
If dirt or other debris is adhering to
the inside of the fuel fill valve, gas
may leak out after refueling. If more
fuel is needed, repeat the refueling
procedure.
Put the fill valve dust cap on
securely and close the fuel
filler door.
Pressure Relief Devices
The CNG tank has pressure relief
devices that are designed to release
pressure if the CNG tank is
overheated or over pressurized.
{Warning
If the pressure relief devices
release CNG while the vehicle is
being operated, the CNG tanks
will be emptied and it will run out
of fuel. If a release of CNG is
detected, move the vehicle to a
(Continued)
Warning (Continued)
safe stopping location. A loud
rushing noise may be heard when
the CNG is released.
If a pressure relief device
releases CNG while the vehicle is
not running, it is possible that not
all tanks will be emptied. Do not
start the vehicle.
Have the vehicle towed to an
authorized GM dealer for service.
In Case of a CNG Leak
If a CNG fuel leak is suspected, see
Fuel System Leak010.
Fuel System Leak
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
(Continued)