Air Pressure Gage
If your vehicle has air
brakes, the air pressure
gage is located above the
switchbank in the center
of the instrument panel.
This gage shows the air pressure for both your front
and rear brake systems.
If the needle on the gage indicates that the air pressure
is below 60 to 75 psi (415 to 517 kPa), the low air
warning light will come on. An alarm will also sound if
this happens.
The bottom yellow pointer shows the pressure available
for the front secondary system, while the top white
pointer shows pressure for the rear primary system.
There should be no more than 4 psi (28 kPa) difference
showing between the systems.
Don’t drive until both pointers are showing at least
120 psi (827 kPa), so you’ll have enough air if you need
to apply your brakes.
Hourmeter Gage
To access the engine hourmeter gage, press the trip
odometer button three times.
The instrument panel cluster displays the accumulated
engine run time hours using the reconfigurable
odometer display. The engine run time hours displays
only when the ignition is in the LOCK/OFF or
ACC/ACCESSORY position and the trip reset button is
pressed for about four seconds. The value of the
accumulated hours does not change when the battery
is disconnected.
The hourmeter resets to 0.0 when 10,000 hours are
accumulated. The instrument panel cluster begins
to reaccumulate the engine run time hours from
0.0 hours.
3-46
Audio System(s)
If your vehicle came without a radio, the wiring
provisions for a radio and an antenna were installed at
the assembly plant, so that if you want, a radio can
be installed at the dealer/retailer.
Determine which radio your vehicle has and then read the
pages following to familiarize yourself with its features.
{CAUTION:
This system provides you with far greater
access to audio stations and song listings.
Giving extended attention to entertainment
tasks while driving can cause a crash and you
or others can be injured or killed. Always keep
your eyes on the road and your mind on the
drive — avoid engaging in extended searching
while driving.
Keeping your mind on the drive is important for safe
driving. SeeDefensive Driving on page 4-2. Here are
some ways in which you can help avoid distraction
while driving.While your vehicle is parked:
•Familiarize yourself with all of its controls.
•Familiarize yourself with its operation.
•Set up your audio system by presetting your
favorite radio stations, setting the tone, and
adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
radio stations using the presets and steering wheel
controls if the vehicle has them.
Notice:Before adding any sound equipment to
your vehicle, such as an audio system, CD player,
CB radio, mobile telephone, or two-way radio, make
sure that it can be added by checking with your
dealer/retailer. Also, check federal rules covering
mobile radio and telephone units. If sound equipment
can be added, it is very important to do it properly.
Added sound equipment may interfere with the
operation of your vehicle’s engine, radio, or other
systems, and even damage them. Your vehicle’s
systems may interfere with the operation of sound
equipment that has been added.
Notice:The chime signals related to safety belts,
parking brake, and other functions of your vehicle
operate through the radio/entertainment system. If
that equipment is replaced or additional equipment is
added to your vehicle, the chimes may not work.
Make sure that replacement or additional equipment
is compatible with your vehicle before installing it.
3-47
Finding a Station
AM FM:Press to switch between FM1, FM2, and AM.
The selection displays.
TUNE:Turn to select radio stations.
oSEEKp:Press the arrows to go to the previous or
to the next station.
To scan stations, press and hold either arrow for
two seconds until a beep sounds. The radio goes to a
station, plays for a few seconds, then goes to the
next station. Press either arrow again to stop scanning.
To scan preset stations, press and hold either arrow
for more than four seconds until two beeps sound.
The radio goes to the first preset station stored on the
pushbuttons, plays for a few seconds, then goes to
the next preset station. Press either arrow again to stop
scanning presets.
The radio only seeks and scans stations, with a strong
signal, that are in the selected band.
Setting Preset Stations
Up to 18 stations (six FM1, six FM2, and six AM),
can be programmed on the six numbered pushbuttons,
by performing the following steps:
1. Turn the radio on.
2. Press AM FM to select FM1, FM2, or AM.
3. Tune in the desired station.
4. Press and hold one of the six numbered
pushbuttons until a beep sounds. When that
numbered pushbutton is pressed, the station that
was set, returns.
5. Repeat Steps 2 through 4 for each pushbutton.
3-49
2 NEXT:The tape must have at least three seconds of
silence between each selection for next to work.
Press this pushbutton to go to the next selection on the
tape. Pressing this pushbutton multiple times in the
next mode increases the number of selections to
be searched forward. Pressing the PREV pushbutton
cancels the selections.
3 REV (Reverse):Press to quickly reverse the tape.
FR displays. The radio plays while the tape reverses.
Press it again to return to playing speed. Select stations
during reverse operation by using the TUNE or SEEK
controls or by using the scan or preset scan features.
4 FWD (Forward):Press to quickly advance the
tape. FF displays. The radio plays while the tape
advances. Press again to return to playing speed.
Select stations during forward operation by using the
TUNE or SEEK controls or by using the scan or preset
scan features.
5 SIDE:Press to play the other side of the tape.6 RPT (Repeat):The tape must have at least three
seconds of silence between each selection for repeat to
work. Press and release to hear a selection over again.
RPT displays. Press again to turn off repeated play.
OFF displays.
oSEEKp:The tape must have at least three
seconds of silence between each selection for seek to
work. The left arrow is the same as the PREV
pushbutton and the right arrow is the same as the
NEXT pushbutton. If either the left or right arrow is
held or pressed more than once, the player continues
moving backward or forward through the tape.
AM FM:Press to listen to the radio when a tape is
playing. The inactive tape remains inside the radio for
future listening.
TAPE:Press to play a cassette tape when listening to
the radio. CAS displays when a tape is loaded.
Z(Eject):Press to eject a tape. Eject can be
activated with the radio off. Cassette tapes can be
loaded with the ignition and radio off if this button
is pressed first.
3-55
Care of the Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes, or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight and
extreme heat. If they are not properly stored, they may
not operate properly or may cause failure of the
tape player.
The tape player should be cleaned regularly after every
50 hours of use. The radio may display CLN to
indicate that the tape player has been used for 50 hours
without resetting the tape clean timer. If this message
appears on the display, the cassette tape player
needs to be cleaned. It will still play tapes, but it should
be cleaned as soon as possible to prevent damage
to the tapes and player. If there is a reduction in sound
quality, try a known good cassette to see if the tape
or the tape player is at fault. If this other cassette has no
improvement in sound quality, clean the tape player.
For best results, use a scrubbing action, non-abrasive
cleaning cassette with pads which scrub the tape
head as the hubs of the cleaner cassette turn.
The recommended cleaning cassette is available
through your dealer/retailer.The cut tape detection feature of the cassette tape
player may identify the cleaning cassette as a damaged
tape. To prevent the cleaning cassette from being
ejected, use the following steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the TAPE button for two seconds
until the radio produces one beep. CAS will flash
on the display for five seconds.
4. Insert the scrubbing action cleaning cassette.
5. Eject the cleaning cassette after the manufacturer’s
recommended cleaning time.
After the cleaning cassette is ejected, the cut tape
detection feature will be active again.
A non-scrubbing action, wet-type cleaner which uses a
cassette with a fabric belt to clean the tape head
can be used. This type of cleaning cassette will not
eject on its own. A non-scrubbing action cleaner may not
clean as thoroughly as the scrubbing type cleaner.
The use of a non-scrubbing action, dry-type cleaning
cassette is not recommended.
3-56
After the player is cleaned, press and hold the eject
button for three seconds to reset the CLN indicator.
The radio will display --- to show the indicator was reset.
Cassettes are subject to wear and the sound quality
may degrade over time. Always make sure the cassette
tape is in good condition before the tape player is
serviced.
Cassette Tape Messages
ERR (Error):If the player detects a tight or broken
tape, this message displays and the player ejects the
tape. The radio goes back to playing the last station
selected.
CLN (Clean):If this message displays, the cassette
tape player needs to be cleaned. It still plays tapes, but
it should be cleaned as soon as possible to prevent
damage to the tapes and player. See “Care of the
Cassette Tape Player” later in this section.
If the cassette is not playing correctly, for any other
reason, try a known good cassette.
If any error occurs repeatedly or if an error cannot be
corrected, contact your dealer/retailer. If the radio
displays an error message, write it down and provide it
to your dealer/retailer when reporting the problem.
CD Adapter Kits
It is possible to use a portable CD player adapter kit
with the cassette tape player after deactivating the
tight/loose tape sensor feature on the tape player.
To deactivate this feature, use the following steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the TAPE button for two seconds
until one beep is produced. CAS flashes, indicating
that the TIGHT/LOOSE TAPE sensor feature is
no longer active.
4. Insert the adapter into the cassette slot.
The override feature remains active until the
Zbutton
is pressed.
Theft-Deterrent Feature
THEFTLOCK®is designed to discourage theft of your
vehicle’s radio. The feature works automatically by
learning a portion of the Vehicle Identification Number
(VIN). If the radio is moved to a different vehicle, it does
not operate and LOC, LOCK, or LOCKED could display.
With THEFTLOCK
®activated, the radio does not
operate if stolen.
3-57
5. Reinstall and tighten the filter container and
reconnect the water sensor wire to the filter.
6. Use the fuel filter priming procedure earlier in this
section to prime the fuel filter.
7. Tighten the air bleed valve by turning it clockwise
until hand-tight.
8. Start your engine and let it idle for five minutes.
Check your fuel filter and air bleed valve for
leaks.
How to Reset Fuel Filter Change
Light - DURAMAX®6.6L (LMM) Engine
The engine controller calculates when to change
the fuel filter based on vehicle and fuel use. Anytime
your fuel filter is changed, reset the fuel filter light so the
engine controller can calculate when the next fuel filter
change is required. If a situation occurs where you
change your fuel filter prior to a change fuel filter light
being turned on, reset the fuel filter change light.To reset the Fuel Filter Change light:
1. Turn the ignition key to RUN with the engine off
2. Fully press the accelerator and brake pedals at the
same time for 10 seconds. If the Fuel Filter Change
light flashes for 5 seconds, the system is resetting.
3. Turn the key to OFF
If the Fuel Filter Change light comes back on when you
start your vehicle, the light has not been reset. Repeat
the procedure. SeeChange Fuel Filter Warning Light on
page 3-44for more information.Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel might be hard
to find. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not be
covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
5-19
Engine Oil Life System (Gasoline
Engine)
When to Change Engine Oil
Your vehicle has a computer system that lets you know
when to change the engine oil and filter. This is based
on engine revolutions and engine temperature, and not
on mileage. Based on driving conditions, the mileage at
which an oil change will be indicated can vary
considerably. For the oil life system to work properly, you
must reset the system every time the oil is changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A change engine oil light will come on. See
Change Engine Oil Light on page 3-38. Change the oil as
soon as possible within the next 600 miles (1 000 km).
It is possible that, if you are driving under the best
conditions, the oil life system might not indicate that an oil
change is necessary for over a year. However, the engine
oil and filter must be changed at least once a year and at
this time the system must be reset. Your dealer/retailer
has trained service people who will perform this work
using genuine parts and reset the system. It is also
important to check the oil regularly and keep it at the
proper level.If the system is ever reset accidentally, you must
change the oil at 3,000 miles (5 000 km) since your last
oil change. Remember to reset the oil life system
whenever the oil is changed.How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to change
the engine oil and filter based on vehicle use. Whenever
the oil is changed, reset the system so it can calculate
when the next oil change is required. If a situation occurs
where you change the oil prior to a change engine oil light
being turned on, reset the system.
To reset the change engine oil light:
1. Turn the ignition key to ON/RUN with the
engine off.
2. Fully press and release the accelerator pedal slowly
three times within 10 seconds.
If the change engine oil light flashes for
five seconds, the system is resetting.
3. Turn the key to OFF.
If the change engine oil light comes back on when you
start your vehicle, the engine oil life system has not
reset. Repeat the procedure.
5-36