
Low Oil Level Light
Your vehicle may have
a low oil level light.
This light should come on as a check, when you
start your engine. If the light fails to come on, have
it repaired as soon as possible so you will be
aware when the oil level is low.
Vehicles that have Caterpillar
®diesel engines may
not have a low oil level light. In this case, the light
will neither come on as a check when you start your
engine, nor will it come on to indicate a low oil level.
If this light comes on and stays on, it means your
engine is low on oil. You need to check the oil level
right away. SeeEngine Oil (Caterpillar
®DieselEngine) on page 268orEngine Oil (Gasoline
Engine) on page 268orEngine Oil (DURAMAX
®/
Isuzu Diesel Engine) on page 272for further
information.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
Change Engine Oil Light
The change engine oil
light should come on
briefly as a bulb
check when you start
the engine. If the
light does not come on,
have it serviced.
If the change engine oil light comes on and stays
on after you start the engine, have the oil
changed.
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Transmission Temperature Gage
If you have an automatic
transmission and this
gage, it is located above
the switchbank in the
center of the instrument
panel.
When your ignition is on, the gage shows the
temperature of the transmission oil. A reading in
the warning zone, the red area beginning at 300°F
(150°C), means you must stop driving and
check into the cause. One possible cause is a low
oil level in the transmission.
Notice:If you drive your vehicle with the
transmission temperature gage above normal
operating range, you can damage the
transmission. This could lead to costly repairs
that would not be covered by your warranty.
Do not drive your vehicle while the
transmission temperature gage reading is
above normal. See your dealer for service.
Exhaust Brake Indicator Light
If your vehicle is
equipped with an
exhaust brake, you will
have this light, located
above the climate
controls in the center of
the instrument panel.
The exhaust brake indicator light will come on and
stay on whenever the diesel engine exhaust brake
or exhaust restrictor is active. For more information,
seeDiesel Engine Exhaust Brake on page 112and
Exhaust Restrictor (Engine Warm-Up) on page 108.
Differential Lock Indicator Light
If your vehicle has this
feature, this light is
located in the center of
the instrument panel.
The light is on when the
rear differential lock
system is in use.
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The light will come on momentarily during starting.
If the light fails to come on, have it repaired as
soon as possible so you will be aware when
the lock system is in use.
SeeRear Axle Differential Lock Control on
page 215for more information.
Reduced Engine Power Light
If the check engine and
reduced engine power
lights are on, the
electronic throttle control
may be disabled, and a
noticeable change in the
vehicle’s performance
may occur.
If the reduced engine power light is on, but there
is no change in performance, proceed to your
destination. The performance may be reduced the
next time the vehicle is driven. The vehicle may
be driven at a slower speed while the reduced
engine power light is on, but acceleration
and speed may be limited.
Anytime the check engine light stays on, the
vehicle should be taken to an authorized dealer as
soon as possible for service.
Highbeam On Light
This light comes on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on
page 144.
Daytime Running Lamps (DRL)
Indicator Light
This light is located on
the instrument panel
cluster. It goes on
whenever the Daytime
Running Lamps are on.
SeeDaytime Running Lamps (DRL) on page 151
for more information.
When it begins to get dark, the DRL indicator light
is a reminder to turn on your headlamps.
179

Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance between the
right and the left speakers, press and release
AUDIO until BAL (balance) displays. Then press
and hold the up or the down arrow to move
the sound toward the right or the left speakers.
To adjust the fade between the front and the rear
speakers, press and release AUDIO until FAD
(fade) displays. Then press and hold the up or the
down arrow to move the sound toward the front
or the rear speakers.
To adjust balance or fade to the middle position,
select BAL or FAD. Then press and hold
AUDIO for more than two seconds until a beep
sounds. B (balance) and a zero or F (fade) and a
zero displays.
To adjust both tone controls and both speaker
controls to the middle position, first exit out of audio
mode by pressing another button, causing the radio
to perform that function or wait five seconds for the
display to return to time of day. Then press and hold
AUDIO for more than two seconds until a beep
sounds. CEN (center) displays.
Fade might not be available if the vehicle is a
regular cab model.
Radio Messages
CAL (Calibrated):The audio system has been
calibrated for your vehicle from the factory. If CAL
displays it means that the radio has not been
configured properly for your vehicle and must be
returned to your dealer for service.
LOC (Locked):This message is displayed when
the THEFTLOCK
®system has locked up. Take
the vehicle to your dealer for service.
If any error occurs repeatedly or if an error cannot
be corrected, contact your dealer.
188

Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance between the right
and the left speakers, press and release AUDIO
until BAL (balance) appears on the display. Then
press and hold the up or the down arrow to move
the sound toward the right or the left speakers.
To adjust the fade between the front and the rear
speakers, press and release AUDIO until FAD
(fade) appears on the display. Then press and hold
the up or the down arrow to move the sound toward
the front or the rear speakers.
To adjust balance or fade to the middle position,
select BAL or FAD. Then press and hold AUDIO for
more than two seconds until you hear a beep.
L (balance) and a zero or F and a zero appears on
the display.
To adjust both tone controls and both speaker
controls to the middle position, end out of audio by
waiting for the display to change to the time display.
Then press and hold AUDIO for more than
two seconds until you hear a beep. CEN (center)
appears on the display.
Fade may not be available if the vehicle is a regular
cab model.
Radio Messages
CAL (Calibration):The audio system has been
calibrated for your vehicle from the factory. If
CAL appears on the display it means that the radio
has not been configured properly for your vehicle
and must be returned to your dealer for service.
LOC (Locked):This message is displayed when
the THEFTLOCK
®system has locked up. Take
the vehicle to your dealer for service.
If any error occurs repeatedly or if an error cannot
be corrected, contact your dealer.
Playing a Cassette Tape
The tape player is built to work best with tapes
that are up to 30 to 45 minutes long on each side.
Tapes longer than that are so thin they may not
work well in this player. The longer side with
the tape visible should face to the right. If you hear
nothing or hear a garbled sound, the tape may
not be in squarely. Press the eject button to
remove the tape and start over.
191

Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance between the
right and the left speakers, press and release the
AUDIO button until BAL (balance) appears on
the display. Then press and hold the up or
the down arrow to move the sound toward the
right or the left speakers.
To adjust the fade between the front and the rear
speakers, press and release the AUDIO button
until FAD (fade) appears on the display. Then
press and hold the up or the down arrow to move
the sound toward the front or the rear speakers.
To adjust balance or fade to the middle position,
select BAL or FAD. Then press and hold
AUDIO for more than two seconds until you hear
a beep. L (balance) and a zero or F and a
zero appears on the display.To adjust both tone controls and both speaker
controls to the middle position, first end out
of audio mode by pressing another button, causing
the radio to perform that function, or by waiting
five seconds for the display to return to the time of
day. Then press and hold the AUDIO button for
more than two seconds until you hear a beep.
CEN appears on the display.
Fade may not be available if the vehicle is a
regular cab model.
Radio Messages
CAL (Calibration):The audio system has been
calibrated for your vehicle from the factory. If
CAL appears on the display it means that the radio
has not been configured properly for your vehicle
and must be returned to your dealer for service.
LOC (Locked):This message is displayed when
the THEFTLOCK
®system has locked up. Take
the vehicle to your dealer for service.
If any error occurs repeatedly or cannot be
corrected, contact your dealer.
197

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.
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.Care of Your CDs
Handle CDs carefully. Store them in their original
cases or other protective cases and away from
direct sunlight and dust. The CD player scans the
bottom surface of the disc. If the surface of a
CD is damaged, such as cracked, broken,
or scratched, the CD will not play properly or not
at all. If the surface of a CD is soiled, take a
soft, lint free cloth or dampen a clean, soft cloth in
a mild, neutral detergent solution mixed with
water, and clean it. Make sure the wiping process
starts from the center to the edge.
Do not touch the bottom side of a CD while
handling it; this could damage the surface. Pick up
CDs by grasping the outer edges or the edge of
the hole and the outer edge.
203

Once you are moving on the freeway, make
certain you allow a reasonable following distance.
Expect to move slightly slower at night.
When you want to leave the freeway, move to the
proper lane well in advance. If you miss your
exit, do not, under any circumstances, stop and
back up. Drive on to the next exit.
The exit ramp can be curved, sometimes quite
sharply. The exit speed for cars — but not larger
vehicles — is usually posted. You should go
more slowly.
Reduce your speed according to your speedometer,
not to your sense of motion. After driving for any
distance at higher speeds, you may tend to think you
are going slower than you actually are.
Highway Hypnosis
Is there actually such a condition as highway
hypnosis? Or is it just plain falling asleep at
the wheel? Call it highway hypnosis, lack of
awareness, or whatever.When you drive the vehicle for a long distance,
there is something about an easy stretch of road
with the same scenery, along with the hum of the
tires on the road, the drone of the engine, and the
rush of the wind against the vehicle that can make
you sleepy. Do not let it happen to you! If it does,
your vehicle can leave the road in less than a
second, and you could crash and be injured.
What can you do about highway hypnosis?
First, be aware that it can happen.
Then here are some tips:
•Make sure your vehicle is well ventilated, with
a comfortably cool interior.
•Keep your eyes moving. Scan the road ahead
and to the sides. Check your mirrors and your
instruments frequently.
•If you get sleepy, pull off the road into a rest,
service, or parking area and take a nap, get
some exercise, or both. For safety, treat
drowsiness on the highway as an emergency.
229