Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-5
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-13
Interior Lamps..............................................3-15
Instrument Panel Switchbank..........................3-16
Accessory Power Outlets...............................3-17
Ashtrays and Cigarette Lighter........................3-18
Climate Controls............................................3-19
Climate Control System.................................3-19
Outlet Adjustment.........................................3-22
Rear Heating System....................................3-23
Warning Lights, Gages, and Indicators............3-23
Instrument Panel Cluster................................3-24
Speedometer and Odometer...........................3-25
Tachometer.................................................3-26
Safety Belt Reminder Light.............................3-26
Safety Belt Reminder Tone............................3-26
Air Bag Readiness Light................................3-27
Air Bag Off Light..........................................3-28Charging System Light..................................3-30
Voltmeter Gage............................................3-30
Service Transmission Warning Light................3-31
Range Inhibit Warning Indicator......................3-31
Brake System Warning Light..........................3-31
Parking Brake Warning Light..........................3-34
Anti-Lock Brake System Warning Light.............3-34
Trailer Anti-Lock Brake System
Warning Light...........................................3-35
Engine Coolant Temperature Gage..................3-35
Low Coolant Warning Light............................3-36
Wait to Start Indicator...................................3-36
Malfunction Indicator Lamp.............................3-37
Oil Pressure Gage........................................3-37
Low Oil Level Light.......................................3-38
Change Engine Oil Light................................3-39
Engine Overspeed Warning Light....................3-39
Engine Shutdown Warning Light.....................3-39
Transmission Temperature Gage.....................3-40
Exhaust Brake Indicator Light.........................3-40
Differential Lock Indicator Light.......................3-40
Reduced Engine Power Light.........................3-41
Daytime Running Lamps Indicator Light...........3-41
Section 3 Instrument Panel
3-1
A. Air Outlets. SeeOutlet Adjustment on page 3-22.
B. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-24.
C. Shift Lever. SeeStarting Your Gasoline Engine on
page 2-12,Starting Your Diesel Engine on page 2-14
andStarting Your DURAMAX™ Diesel Engine on
page 2-19.
D. Air Brake Controls. See ‘‘Air Brake’’ underParking
on page 2-33.
E. Auxiliary Gages. SeeWarning Lights, Gages, and
Indicators on page 3-23.
F. Exterior Lamp Control. SeeExterior Lamps on
page 3-13.
G. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7.
H. Hazard Warning Flashers Button. SeeHazard
Warning Flashers on page 3-5.
I. Audio System(s). SeeAudio System(s) on
page 3-45.
J. Climate Controls. SeeClimate Control System on
page 3-19.
K. Instrument Panel Switchbank. SeeInstrument Panel
Switchbank on page 3-16.
L. Air Bag Off Switch. SeeAir Bag Off Switch on
page 1-55.
M. Accessory Power Outlets. SeeAccessory Power
Outlets on page 3-17.Hazard Warning Flashers
Your hazard warning flashers let you warn others. They
also let police know you have a problem. Your front
and rear turn signal lamps will flash on and off.
3-5
Your hazard warning
flashers button is located
on top of the steering
column.
Your hazard warning flashers work no matter what
position your key is in, and even if the key isn’t in.
Press the button to make the front and rear turn signal
lamps flash on and off. Press the button again to
turn the flashers off.
When the hazard warning flashers are on, your turn
signals won’t work. The hazard warning flashers will not
flash if the brakes are applied.Other Warning Devices
If you carry reflective triangles, you can set one up at
the side of the road behind your vehicle in the
recommended manner per Federal Motor Carrier Safety
Regulation (FMCSR) Section 392.22, to warn others.
Horn
Sound the horn by pushing the center of the steering
wheel. If you have the optional air horn, it is controlled
by a cord that you’ll find up above and to the left of
the driver. The harder you pull on the cord, the louder
the air horn will sound. The air horn works only after
your air brake system pressure gets up to about
115 psi (790 kPa). The air horn will work properly
unless the the air brake system pressure drops below
60 psi (415 kPa).
3-6
Cruise Control
If your vehicle has this
feature, it is located at the
end of the multifunction
lever.
T(Set):Pressing in this button at the end of the
lever sets the cruise control speed.
9(Off):Moving the switch to this position turns off
the cruise control.
R(On):Moving the switch to this position turns on the
cruise control.
S(Resume/Accelerate):Moving the switch to this
position turns on resume/accelerate.With cruise control, you can maintain a speed of about
30 mph (48 km/h) or more without keeping your foot
on the accelerator. Cruise control does not work
at speeds below about 30 mph (48 km/h).
If you have an automatic transmission and you apply
your brakes, the cruise control will shut off.
If you have a manual transmission and you apply your
brakes or push the clutch pedal, the cruise control
will shut off.
{CAUTION:
Cruise control can be dangerous where you
can not drive safely at a steady speed. So, do
not use your cruise control on winding roads
or in heavy traffic.
Cruise control can be dangerous on slippery
roads. On such roads, fast changes in tire
traction can cause needless wheel spinning,
and you could lose control. Do not use cruise
control on slippery roads.
3-10
Setting Cruise Control
{CAUTION:
If you leave your cruise control on when you
are not using cruise, you might hit a button
and go into cruise when you do not want to.
You could be startled and even lose control.
Keep the cruise control switch off until you
want to use cruise control.
1. Move the cruise control switch to on.
2. Get up to the speed you want.
3. Press in the set button at the end of the lever and
release it.
4. Take your foot off the accelerator pedal. The
accelerator pedal will not go down.
Resuming a Set Speed
Suppose you set your cruise control at a desired speed
and then you apply the brake. This, of course, shuts
off the cruise control. But you don’t need to reset it.Once you’re going about 30 mph (48 km/h) or more, you
can move the cruise control switch briefly from on to
resume/accelerate.
The vehicle will return to your chosen speed and
stay there.
If you hold the switch at resume/accelerate, the vehicle
will keep going faster until you release the switch or
apply the brake. So unless you want to go faster, don’t
hold the switch at resume/accelerate.
Increasing Speed While Using Cruise
Control
There are two ways to go to a higher speed:
•Use the accelerator pedal to get to the higher
speed. Press the button at the end of the lever, then
release the button and the accelerator pedal.
You’ll now cruise at the higher speed.
•Move the cruise switch from on to
resume/accelerate. Hold it there until you get up to
the speed you want, and then release the switch.
To increase your speed in very small amounts,
move the switch briefly to resume/accelerate. Each
time you do this, your vehicle will go about
1 mph (1.6 km/h) faster.
3-11
Reducing Speed While Using Cruise
Control
Press in the button at the end of the lever until you
reach the lower speed you want, then release it.
To slow down in very small amounts, tap the button
briefly. Each time you do this, you’ll go 1 mph (1.6 km/h)
slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase your speed.
When you take your foot off the pedal, your vehicle will
slow down to the cruise control speed you set earlier.
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the
hills. When going up steep hills, you may want to step
on the accelerator pedal to maintain your speed.
When going downhill, you may have to brake or shift to
a lower gear to keep your speed down. Of course,
applying the brake or clutch takes you out of cruise
control. Many drivers find this to be too much trouble
and don’t use cruise control on steep hills.
Ending Cruise Control
There are four different ways to turn off the cruise
control:
•Step lightly on the brake pedal (manual and
automatic transmissions).
•Press the clutch pedal to the floor (manual
transmissions).
•Move the cruise switch to off, or
•Shift the transmission to NEUTRAL (N).
Erasing Speed Memory
When you turn off the ignition, your cruise control set
speed memory is erased.
3-12
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada.
The DRL system will make your headlamps come on at
reduced brightness when the following conditions are met:
•The ignition is on,
•the exterior lamp control is off, and
•the parking brake is released.
When the DRL are on, only your headlamps will be on.
The taillamps, sidemarker and other lamps won’t be
on. Your instrument panel won’t be lit up either.
When it begins to get dark,
your DRL indicator light is
a reminder to turn the
headlamps on. The other
lamps that come on
with your headlamps, will
also come on.
When you turn the headlamps off, the regular lamps will
go off, and your low-beam headlamps will change to
the reduced brightness of DRL.To idle your vehicle with the DRL off, set the parking
brake. The DRL will stay off until you release the
parking brake.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Marker Lamp Defeat Switch
If your vehicle has this feature, you can manually blink
the marker and clearance lamps.
The marker lamp defeat
switch is located in the
instrument panel
switchbank.
Press and hold the bottom of the switch to turn off the
marker and clearance lamps. When you release
the switch, the marker and clearance lamps will come
back on.
3-14
This switchbank is located in the center of the instrument
panel.
e(Marker Lamp Defeat Switch):See “Marker Lamp
Defeat Switch” underExterior Lamps on page 3-13.
j(Manual High Idle Switch):See “Manual High Idle
System” underStarting Your Diesel Engine on
page 2-14.
i(Traction Control Switch):SeeTraction Control
System (TCS) on page 4-11.
f(Outside Heated Mirror Switch):SeeOutside
Heated Mirrors on page 2-41.
g(Power Take Off Switch):SeePower Take-Off
(PTO) on page 4-36.
h(Rear Air Suspension Dump Control
Switch):See “Rear Air Suspension Dump Control”
underTwo-Speed Rear Axle Electric Shift Control
on page 2-26.
k(Rear Axle Shift Control Switch):See “Air Shift
Control” (Automatic Transmission) underTwo-Speed
Rear Axle Electric Shift Control on page 2-26.
Exhaust Brake Switch:SeeDiesel Engine Exhaust
Brake on page 2-25.
l(Differential Lock Control Switch):SeeRear
Axle Differential Lock Control on page 4-10.
cd(Air Bag Off Switch):SeeAir Bag Off Switch
on page 1-55.
If your vehicle does not have some of the features
controlled by these switches, there will be a blank switch
marker in its place.
Accessory Power Outlets
With accessory power outlets, you can plug in auxiliary
electrical equipment such as a cellular telephone or
CB radio.
The accessory power outlets are located on the
passenger’s side of the instrument panel.
To use an outlet, pull the cover down. When not using
it, always cover the outlet with the protective cap.
These circuits are protected by a fuse and have
maximum current levels.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating.
3-17