•Service Stop/Start System Telltale — If Equipped
This telltale will turn on to indicate that the
Stop/Start is Unavailable, service Stop/
Start system.
• Loose Fuel Filler Cap
This telltale will turn on to indicate that the
fuel filler cap may be loose.
• Water In Fuel Indicator Light — Diesel Only
The “Water In Fuel Indicator Light” will
illuminate when there is water detected in
the fuel filters. If this light remains on, DO
NOT start the vehicle before you drain the
water from the fuel filters to prevent engine damage.
Refer to “Maintenance Procedures/Draining Fuel/
Water Separator Filters” in “Maintaining Your Ve-
hicle” for further information. •
Wait To Start Light — Diesel Only
The “Wait To Start” telltale will illuminate for
approximately two seconds when the ignition
is turned to the RUN position. It’s duration may be
longer based on colder operating conditions. Vehicle
will not initiate start until telltale is out. Refer to
“Starting Procedures” in “Starting And Operating”
for further information.
NOTE: The “Wait To Start” telltale may not illuminate if
the intake manifold temperature is warm enough.
•Low Diesel Exhaust Fluid Light — Diesel Only
This telltale will turn on to indicate the
Diesel Exhaust Fluid (DEF) is low.
218 UNDERSTANDING YOUR INSTRUMENT PANEL
•Air Suspension Payload Protection Telltale — If
Equipped
This telltale will turn on to indicate that the
maximum payload may have been exceeded or
load leveling cannot be achieved at its current
ride height.
Protection Mode will automatically be selected in order
to “protect” the air suspension system, air suspension
adjustment is limited due to payload.
• Service Stop/Start System Telltale — If Equipped
This telltale will turn on to indicate that the
Stop/Start is Unavailable, service Stop/Start
system. •
Loose Fuel Filler Cap
This telltale will turn on to indicate that the fuel
filler cap may be loose.
EVIC White Telltales
•Electronic Speed Control Ready
This light will turn on when the electronic
speed control is ON. For further information,
refer to “Electronic Speed Control” in “Under-
standing The Features Of Your Vehicle.”
226 UNDERSTANDING YOUR INSTRUMENT PANEL
FUEL REQUIREMENTS ..................380
▫ 5.7L Engines ........................ .380
▫ 6.4L Engine ......................... .381
▫ Reformulated Gasoline .................381
▫ Gasoline/Oxygenate Blends ..............382
▫ E-85 Usage In Non-Flex Fuel Vehicles .......382
▫ MMT In Gasoline .....................383
▫ Materials Added To Fuel ................383
▫ Fuel System Cautions ...................384
▫ Carbon Monoxide Warnings .............385
ADDING FUEL ....................... .385
▫ Loose Fuel Filler Cap Message ............386
VEHICLE LOADING ....................387
▫ Certification Label ....................387
TRAILER TOWING .....................389
▫ Common Towing Definitions .............389
▫ Trailer Hitch Classification ...............393
▫ Trailer Towing Weights (Maximum Trailer Weight
Ratings) ........................... .394
▫ Trailer And Tongue Weight ..............395
▫ Towing Requirements ..................396
▫ Towing Tips ........................ .405
SNOWPLOW ........................ .406
▫ Before Plowing ...................... .407
▫ Snowplow Prep Package Model Availability . . .408
292 STARTING AND OPERATING
CAUTION!
•The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system op-
eration or sensor damage may result when using
replacement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Using aftermarket tire sealants may
cause the Tire Pressure Monitoring System (TPMS)
sensor to become inoperable. After using an after-
market tire sealant it is recommended that you take
your vehicle to your local dealer to have your
sensor function checked.
• After inspecting or adjusting the tire pressure,
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the TPM sensor. NOTE:
•
The TPMS is not intended to replace normal tire care
and maintenance or to provide warning of a tire failure
or condition.
• The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
• Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.
• The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver ’s responsibility to maintain
correct tire pressure using an accurate tire pressure
gauge, even if under-inflation has not reached the level
to trigger illumination of the “Tire Pressure Monitor-
ing Telltale Light.”
374 STARTING AND OPERATING
Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
•Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as
a garage, and never sit in a parked vehicle with the
engine running for an extended period. If the
vehicle is stopped in an open area with the engine
running for more than a short period, adjust the
ventilation system to force fresh, outside air into
the vehicle.
(Continued)
WARNING! (Continued)
•Guard against carbon monoxide with proper main-
tenance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal
conditions repaired promptly. Until repaired, drive
with all side windows fully open.
ADDING FUEL
CAUTION!
• Damage to the fuel system or emissions control
system could result from using an improper fuel
tank filler tube cap (gas cap). A poorly fitting cap
could let impurities into the fuel system. Also, a
poorly-fitted aftermarket cap can cause the MIL
(Malfunction Indicator Light) to illuminate due to
fuel vapors escaping from the system.
(Continued)
5
STARTING AND OPERATING 385
CAUTION!(Continued)
•A poorly fitting gas cap may cause the MIL to turn
on.
• To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.
NOTE: When the fuel nozzle “clicks” or shuts off the
fuel tank is full.
WARNING!
• Never have any smoking materials lit in or near the
vehicle when the gas cap is removed or the tank is
being filled.
• Never add fuel to the vehicle when the engine is
running. This is in violation of most state and
federal fire regulations and may cause the MIL to
turn on. NOTE:
Tighten the gas cap ¼ turn until you hear one
click. This is an indication that the cap is properly
tightened.
If the gas cap is not tightened properly, the Malfunction
Indicator Light will come on. Be sure the gas cap is
tightened every time the vehicle is refueled.
WARNING!
A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on the
ground while filling.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
386 STARTING AND OPERATING
will display in the EVIC telltale display area. Refer to
“Electronic Vehicle Information Center (EVIC) in “Under-
standing Your Instrument Panel” for further information.
Tighten the fuel filler cap properly and press the SELECT
button to turn off the message. If the problem continues,
the message will appear the next time the vehicle is
started.
VEHICLE LOADING
Certification Label
As required by National Highway Traffic Safety Admin-
istration regulations, your vehicle has a certification label
affixed to the driver’s side door or pillar.
This label contains the month and year of manufacture,
Gross Vehicle Weight Rating (GVWR), Gross Axle Weight
Rating (GAWR) front and rear, and Vehicle Identification
Number (VIN). A Month-Day-Hour (MDH) number isincluded on this label and indicates the Month, Day and
Hour of manufacture. The bar code that appears on the
bottom of the label is your VIN.
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front and
rear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
Payload
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the
driver, all passengers, options and cargo.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
5
STARTING AND OPERATING 387
Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles or suspension
components sometimes specified by purchasers for in-
creased durability does not necessarily increase the vehi-
cle’s GVWR.
Tire Size
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commer-
cial scale to insure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should
then be determined separately to be sure that the load is
properly distributed over the front and rear axle. Weigh-
ing the vehicle may show that the GAWR of either the
388 STARTING AND OPERATING