GMC 2016 Silverado User manual

CMY

2k16_CS6_Misc_silverado_sierra_bifuel_23341897A.ai 1 9/23/2015 11:58:10 AM2k16_CS6_Misc_silverado_sierra_bifuel_23341897A.ai 1 9/23/2015 11:58:10 AM

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-
Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . 2
Instruments and Controls . . . . . . . . 5
Driving and Operating . . . . . . . . . . . 8
Vehicle Care . . . . . . . . . . . . . . . . . . . . 22
Service and Maintenance . . . . . . . 26
Technical Data . . . . . . . . . . . . . . . . . 30
Index ..................... 32

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

2 Introduction

Introduction

The names, logos, emblems,

slogans, vehicle model names, and

vehicle body designs appearing in

this supplement including, but not

limited to, GM, the GM logo,

CHEVROLET, the CHEVROLET

Emblem, GMC, the GMC Truck

Emblem, SILVERADO, and SIERRA

are trademarks and/or service

marks of General Motors LLC, its

subsidiaries, affiliates, or licensors.

For vehicles first sold in Canada,

substitute the name “General

Motors of Canada Limited”for

Chevrolet and GMC Motor Division

wherever it appears in this manual.

This manual describes features that

may or may not be on the vehicle

because of optional equipment that

was not purchased on the vehicle,

model variants, country

specifications, features/applications

that may not be available in your

region, or changes subsequent to

the printing of this owner manual.

Refer to the purchase

documentation relating to your

specific vehicle to confirm the

features.

This vehicle is designed to operate

on gasoline or Compressed Natural

Gas (CNG). It will not operate on

diesel or Liquefied Petroleum

Gas (LPG) fuel.

Keep this manual in the vehicle for

quick reference.

Canadian Vehicle Owners

A French language manual can be

obtained from your dealer, at

www.helminc.com, or from:

Propriétaires Canadiens

On peut obtenir un exemplaire de

ce guide en français auprès du

concessionnaire ou à l'adresse

Helm, Incorporated

Attention: Customer Service

47911 Halyard Drive

Plymouth, MI 48170

USA

Litho in U.S.A.

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

Introduction 3

Using this Supplement

This supplement contains

information specific to the unique

components of the vehicle. It does

not explain everything you need to

know about the vehicle. Read this

supplement along with the owner

manual to learn about the vehicle's

features and controls.

Index

A good place to look for what you

need is the Index in back of this

supplement. It is an alphabetical list

of what is in the supplement, and

the page number where you will

find it.

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

4 Introduction

2NOTES

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

Instruments and Controls 5

Instruments and

Controls

Warning Lights, Gauges, and

Indicators

Fuel Gauge ..................... 5

Malfunction Indicator Lamp . . . . . 6

Information Displays

Driver Information

Center (DIC) . . . . . . . . . . . . . . . . . . . 7

Warning Lights,

Gauges, and

Indicators

Fuel Gauge

The vehicle has a gasoline/CNG

fuel gauge.

Metric

English

When the ignition is on, the

gasoline/CNG fuel gauge indicates

about how much fuel is left in

the tank.

When the engine is running, the fuel

gauge displays the level for the type

of fuel that is currently being used.

The fuel level for the second fuel not

being used (gasoline or CNG) is

displayed in the Driver Information

Center (DIC).

For CNG, the fuel gauge has been

calibrated to display full at

approximately 24 800 kPa

(3,600 psig) and empty at

approximately 2 758 kPa (400 psig).

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

6 Instruments and Controls

CNG fuel gauge readings are

affected by changes in fuel

temperature and fuel pressure.

See “Fuel Gauge”in the owner

manual.

Malfunction

Indicator Lamp

The malfunction indicator lamp is in

the instrument cluster.

This vehicle has been specifically

designed to illuminate this indicator

when emissions exceed acceptable

levels while operating on either

gasoline or CNG fuel.

The malfunction indicator lamp

comes on to indicate that there is a

problem and service is required.

Malfunctions often will be indicated

by the system before any problem is

apparent. This system is also

designed to assist the service

technician in correctly diagnosing

any malfunction.

Caution

If the vehicle is continually driven

with this light on, the emission

controls might not work as well,

the vehicle fuel economy might

not be as good, and the engine

might not run as smoothly. This

could lead to costly repairs that

might not be covered by the

vehicle warranty.

This light should come on as a

check to show you it is working

when the ignition is on and the

engine is not running.

See the owner manual for more

information.

CNG Malfunction Indicator

The CNG indicator light on the fuel

selector switch in the center stack

will show if the CNG system has an

error. If the light is blinking rapidly

and does not stop, an error has

occurred. The light will continue to

flash rapidly until the problem is

corrected. See your dealer for

service.

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

Instruments and Controls 7

Information Displays

Driver Information

Center (DIC)

The DIC displays are shown in the

center of the instrument cluster in

the Info app. A bi-fuel vehicle with

the uplevel cluster will have the

following additional DIC info pages.

DIC Info Pages

Fuel Level : While operating on

CNG, the gasoline fuel level can be

viewed in the DIC.

CNG Fuel Level : While operating

on gasoline, the CNG fuel level can

be viewed in the DIC.

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

8 Driving and Operating

Driving and

Operating

Driving Information

Vehicle Load Limits . . . . . . . . . . . . . 8

Truck-Camper Loading

Information . . . . . . . . . . . . . . . . . . . . 8

Starting and Operating

Starting the Engine . . . . . . . . . . . . . . 9

Fuel

Fuel ............................. 9

Filling the Tank . . . . . . . . . . . . . . . . . 11

Fuel System Leak . . . . . . . . . . . . . 16

Towing

Trailer Towing . . . . . . . . . . . . . . . . . . 18

Driving Information

Vehicle Load Limits

Pickup Models

{Warning

Do not remove the Compressed

Natural Gas (CNG) fuel tank

shield. Things carried in the bed

of the truck could shift forward

during a sudden stop or a

collision. The CNG fuel tank could

be damaged and cause a natural

gas leak. If the gas is,

accidentally, ignited, you or others

could be seriously injured. Make

sure things in the bed of the truck

are properly secured.

Cab Chassis Models

See the Body Builder Manual at

www.gmupfitter.com for fuel tank

cover modification restrictions.

Pickup and Cab Chassis Models

Caution

The CNG fuel tank and/or shield

could be damaged if objects are

stacked on or against the fuel

tank shield or sit or stand on the

shield. Never put anything on or

against the CNG fuel tank shield.

See “Vehicle Load Limits”in the

owner manual for cargo loading

instructions.

Truck-Camper Loading

Information

Pickup Models

The vehicle was neither

designed nor intended to carry a

slide-in camper.

Chevrolet/GMC Silverado/Sierra Bi-Fuel (Gasoline/CNG) Supplement (GMNA-

Localizing-U.S/Canada-9234766) - 2016 - CRC - 8/13/15

Driving and Operating 9

Caution

Adding a slide-in camper or

similar equipment to the vehicle

can damage it, and the repairs

would not be covered by the

vehicle warranty. Do not install a

slide-in camper or similar

equipment on the vehicle.

Cab Chassis Models

For incomplete vehicle information,

see www.gmupfitter.com.

Starting and

Operating

Starting the Engine

Always maintain a minimum

gasoline level of at least one-quarter

tank. To protect engine components,

a switch to gasoline may occur at

any time. The vehicle will not start if

the engine stalls due to lack of

gasoline.

Fuel

If a fuel leak is suspected, see Fuel

System Leak 016.

.Whichever mode is selected, the

vehicle always starts on

gasoline. When CNG mode is

selected, the vehicle will

automatically transition from gas

to CNG. Always keep the

gasoline tank at least

one-quarter full.

.It is very important not to run the

gasoline tank out of fuel. The

system will not switch over to

CNG operation if the engine

stalls while running on gasoline.

.If the vehicle runs out of CNG

fuel, it will automatically switch

over to gasoline operation. For

normal CNG operation, fill the

CNG fuel storage system until

the fuel gauge or DIC fuel level

page displays at least

one-quarter full.

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