
GAUGES - GASOLINE ENGINE
Cluster shown in standard measure. Metric similar.
A. Engine oil pressure gauge
B. Engine coolant temperature gauge
C. Transmission fluid temperature gauge
D. Fuel gauge
E. Speedometer
F. Information display. See theInformation Displayschapter for more
information.
G. Tachometer
Engine Oil Pressure Gauge
Indicates engine oil pressure. The needle should stay in the normal
operating range. If the needle falls below the normal range, stop the
vehicle, turn off the engine and check the engine oil level. Add oil if
needed. If the oil level is correct, have your vehicle checked at an
authorized dealer.
ABCD
GFE
Instrument Cluster65
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Canadian_French(fr_can)

Diesel Exhaust Fluid (diesel engine only)
It illuminates when the diesel exhaust fluid level falls below
0.5 gallons (1.9L) in the 5- gallon (19.0L) tank or one gallon
(3.8L) in the 9-gallon (34.0L) tank. Refill the tank or, at a
minimum, add at least one gallon (3.8L) to the 5- gallon (19.0L) tank or
two gallons (7.6L) to the 9- gallon (34.0L) tank.
Diesel Particulate Filter (diesel engine only)
It illuminates when the soot level in the diesel particulate filter
has reached a point where it requires operator assistance. See
Diesel particulate filterin theMaintenancechapter, and your
engine operator’s manual, for more details.
Do Not Shift (Allison automatic transmission only)
It illuminates while driving if a transmission problem exists;
shifting may be restricted. Depending on the severity of the
problem, the shifter’s digital read-out may turn blank.
Operation may continue in order to reach service assistance. The control
unit may not respond to shift selector requests, since there are operating
limitations on the transmission (such as. upshift and downshift
restrictions). Direction changes do not occur.
Direction Indicator
It illuminates when you turn on the left or right turn signal or
the hazard warning flasher. If the indicators stay on or flash
faster, check for a burned out bulb.
Electronic Locking Differential
It illuminates when using the electronic locking differential.
Engine Oil Pressure (gasoline engine only)
It illuminates when engine oil pressure is low.
Fasten Safety belt
It illuminates and a tone sounds to remind you to fasten your
safety belt.
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•TRIP A/B: Registers the distance of individual journeys. Press and
release the INFO button until the A or B trip appears in the display
(this represents the trip mode). Press the RESET button to reset.
SeeSystem check and vehicle feature customizationlater in this
section to switch the display from metric to English.
•MILES (KILOMETERS) TO E: This displays an estimate of
approximately how far you can drive with the fuel remaining in your
tank under normal driving conditions. Remember to turn the ignition
off when refueling to allow this feature to detect the added fuel
correctly. The distance to empty calculation uses a running average
fuel economy based on your recent driving history of 500 miles
(800 kilometers). This value is not the same as the average fuel
economy display. The running average fuel economy resets to a
factory default value if the battery is disconnected.
•AVG MPG (L/100 km): Average fuel economy displays your average
fuel economy in miles/gallon or liters/100 km.
•TIMER: Displays the trip elapsed drive time. Press and release
RESET to pause the timer. Press and hold RESET to reset the timer.
System Check and Vehicle Feature Customization
Press the SETUP button repeatedly
to cycle the message center through
the following features:
SETUP
RESET FOR
SYSTEM CHECKPress the
RESET button.OIL LIFE
CHARGING SYSTEM
BRAKE SYSTEM
MILES TO EMPTY
UNITS Press the
RESET button.English or Metric
INFOSETUP
RESET
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Note:Do not increase engine speed until the oil pressure gauge
indicates normal pressure. The oil pressure gauge should indicate this
within 15 seconds after starting.
Note:Idle the engine for three to five minutes before operating with a
full load.
Note:Try to limit engine idle to 10 minutes. Excessive idling reduces
fuel economy.
Vehicles with a Manual Transmission
Note:Do not touch the accelerator pedal.
1. Fully press the clutch pedal.
2. Start the engine.
Vehicles with an Automatic Transmission
Note:Do not touch the accelerator pedal.
1. Select positionN,orP(if equipped with a Park position).
2. Fully press the brake pedal.
3. Start the engine.
Starting the Engine with the Vehicle on a Steep Grade
When starting a diesel engine when the loaded vehicle is on a grade, the
engine RPM starts to fall slightly when you engage the clutch. Do not
disengage the clutch and try to increase engine RPM as this may damage
driveline components. The engine recovers as the vehicle begins moving.
DIESEL PARTICULATE FILTER (DPF)
WARNING:The normal operating temperature of the exhaust
system is very high. Never work around, or attempt to repair, any
part of the exhaust system until it has cooled. Use special care when
working around the diesel particulate filter. The DPF heats up to a high
temperature after only a short period of engine operation, and can
remain hot even after the engine is turned off. Failure to follow these
instructions may result in serious personal injury.
Your vehicle is equipped with a diesel particulate filter (DPF), as part of
the after-treatment exhaust system, to trap soot and other large particles
produced by the engine combustion process. You must periodically
reduce the soot that accumulates in the filter to prevent excessive
exhaust restriction. The engine and after-treatment system generally
perform the soot reduction process, also known as “filter regeneration,”
automatically.
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3. Do not press the accelerator pedal, service brake pedal, or clutch
pedal (manual transmission).
4. The parking brake must remain set.
On average, depending on filter level and other factors, the process takes
20–30 minutes to complete. The DPF lamp turns off when the process is
complete. Repeat Steps 1–5, if parked regeneration is interrupted.
To Discontinue Parked Regeneration
Press any of the floor pedals to discontinue parked regeneration.
Maintenance and Service
The DPF can retain a relatively large amount of residual ash and provide
many miles and hours of maintenance-free operation. At some point,
generally beyond 150000 miles (240000 kilometers) or 5000 hours of
operation (whichever comes first), the DPF requires professional
cleaning to remove the accumulated ash.
The exact number of miles or hours of operation vary greatly depending
upon vehicle and engine loading and operating conditions, ash content of
the engine oil, and quality of the diesel fuel used in your truck. Adhering
to your engine manufacturer’s recommended oil and fuel specifications
maximizes the miles and hours of operation before a DPF professional
cleaning is required. See your engine manufacturer’s owner’s manual for
more details about recommended maintenance and service of your DPF.
Exhaust Outlet Assembly
WARNING:The normal operating temperature of the exhaust
system is very high. Never work around or attempt to repair any
part of the exhaust system until it has cooled. Failure to follow these
instructions may result in serious personal injury.
Note:Do not modify or remove this device. Modification of the system
or additions of aftermarket devices can reduce the effectiveness of the
system, as well as cause damage to the exhaust system or engine. Any
modifications may also invalidate the vehicle or engine warranty. See
your warranty information.
Note:Blocked or plugged holes or modification to, or removal of, the
outlet assembly could result in elevated exhaust temperatures that may
result in vehicle or property damage or personal injury.
The exhaust outlet assembly on your vehicle is a uniquely functioning
device that accompanies the DPF assembly. It can help control the
temperature of the exhaust during the DPF regeneration process.
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The inlet holes in the side of the assembly are functional. These holes
allow outside air to enter into the outlet assembly. Keep the holes clear
of mud and other foreign material to maintain proper functionality of the
system. One way to keep the holes clear is to spray the outlet assembly
with a hose when washing your vehicle. Failure to keep the functional
holes clear of foreign material may result in blocking or plugging of the
holes.
SWITCHING OFF A DIESEL ENGINE
Allow the engine to idle for three to five minutes before shutting it
down. The larger the engine, the greater the need is for this idling
period.
Note:Try to limit engine idle to 10 minutes. Excessive idling reduces
fuel economy.
ENGINE AUTOMATIC SHUTDOWN (IF EQUIPPED)
WARNING:In the event of engine shutdown, make sure the
vehicle is safely off the road and the problem is remedied prior to
returning to the road. Failure to remove the vehicle from the road
could result in an accident, causing serious injury or death.
This feature either illuminates a light in the instrument cluster or sounds
a tone (or both) indicating that the engine is being shut down due to
high coolant temperature, low engine oil pressure, high diesel particulate
filter soot loading or low engine coolant level. If any of these conditions
exist, the engine automatically shuts down.
If the engine shuts down, you can restart and operate it for 30 seconds
at a time or until you correct the problem. Do not attempt to use this
restarting feature to drive your vehicle very far as serious engine damage
could result.
ENGINE BLOCK HEATER (IF EQUIPPED)
WARNING:Failure to follow engine block heater instructions
could result in property damage or personal injury.
WARNING:Do not use your heater with ungrounded electrical
systems or two-pronged (cheater) adapters. There is a risk of
electrical shock.
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Diesel Engine
WARNING:Using low sulfur (16-500 ppm) or high sulfur
(greater than 500 ppm) diesel fuel in a diesel engine designed to
use only Ultra Low Sulfur Diesel fuel causes certain emission
components to malfunction which may also cause the Service Engine
Soon light to illuminate indicating an emissions-related concern. It may
also increase the likelihood of engine oil dilution with fuel which may
lead to major engine damage
WARNING:Do not mix diesel fuel with gasoline, gasohol or
alcohol. This could cause an explosion resulting in personal
injury.
WARNING:Do not add gasoline, gasohol or alcohol to diesel
fuel. This practice creates a serious fire hazard resulting in
personal injury and engine performance problems.
WARNING:Do not use starting fluid such as ether or gasoline.
Such fluids can cause immediate explosive damage to the engine
and possible personal injury.
WARNING:Do not use home heating oil or any diesel fuel not
intended for highway use. Red dye is used to identify fuels
intended for agricultural and non-highway use. Damage to the fuel
injection system, engine and exhaust catalyst can occur if an improper
fuel is used.
Note:Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.
Use only Ultra Low Sulfur (15 ppm Sulfur Maximum) No. 1-D or 2-D
diesel fuel in your diesel engine. Diesel fuel No. 1-D or winter diesel fuel
blend of No. 2-D is recommended at ambient temperatures below 20°F
(-7°C). Diesel fuel that is blended with 20% biodiesel maximum may be
used.
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Biodiesel fuel is a product converted from renewable fuel sources,
including vegetable oil, animal fat and cooking oil. You should not use
raw, refined, and recycled vegetable/plant oils, greases, and animal fats.
Biodiesel fuel blends must meet requirements of ASTM D7467 standard
specification. See your engine operator’s manual for more information
and restrictions about the use of biodiesel fuel.
Octane Recommendations - Gasoline Engines
Regular unleaded gasoline with a
pump (R+M)/2 octane rating of 87
is recommended. Some stations
offer fuels posted as Regular with
an octane rating below 87,
particularly in high altitude areas. Do not use fuels with a posted octane
rating below 87.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see an authorized dealer to
prevent any engine damage.
RUNNING OUT OF FUEL
Gasoline Engine
Avoid running out of fuel because this situation may have an adverse
effect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from off to on several times after
refueling to allow the fuel system to pump the fuel from the tank to
the engine. On restarting, cranking time takes a few seconds longer
than normal.
•If your vehicle is equipped with dual fuel tanks, adding four–five
gallons (15–19 liters) of fuel is enough to restart the engine. If your
vehicle is out of fuel and on a steep grade, more than four–five
gallons (15–19 liters) may be required.
•The service engine soon indicator may come on. For more
information on the service engine soon indicator, see theInstrument
Clusterchapter.
SeeGeneral informationin theInformation Displayschapter for
information on Miles to Empty.
Diesel Engine
Avoid running out of fuel as this allows air to enter the fuel system,
which makes restarting your vehicle difficult.
87(R+M)/2 METHOD
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