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Doors and Locks
Door Locks
{CAUTION:
Unlocked doors can be dangerous.
Passengers, especially children, can
easily open the doors and fall out of a
moving vehicle. When a door is
locked, the handle will not open it.
You increase the chance of being
thrown out of the vehicle in a crash if
the doors are not locked. So, wear
safety belts properly and lock the
doors whenever you drive.
CAUTION: (Continued)
CAUTION: (Continued)
Young children who get into unlocked
vehicles may be unable to get out.
A child can be overcome by extreme
heat and can suffer permanent injuries
or even death from heat stroke.
Always lock your vehicle whenever
you leave it.
Outsiders can easily enter through an
unlocked door when you slow down
or stop your vehicle. Locking your
doors can help prevent this from
happening.
There are several ways to lock and unlock your
vehicle.
If your vehicle is equipped with keyless entry, you
can use your transmitter to lock or unlock your
vehicle. SeeRemote Keyless Entry (RKE) System
Operation on page 88.
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To lock or unlock your door from the outside, use
your key.
To lock the door from
the inside, slide the
manual lever on
the door down. To
unlock the door, slide
the manual lever up.Power Door Locks
If your vehicle has
power door locks, press
the bottom of the
power door lock switch
to lock all the doors
at once. To unlock all
the doors at once, press
the top of the power
door lock switch.
When a door is locked, the inside door handle will
not work.
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Power Windows
If your vehicle has power windows, the switches
for all windows are located on the driver’s door. In
addition, each passenger door has a switch for
their own window.
Press the rearward part of the switch to lower the
window. Press the forward part of the switch to
raise the window.
The power windows will operate when the ignition
is in ACCESSORY or RUN.
Express-Down
The driver’s window has an express-down feature.
This allows the window to be lowered fully
without continuously holding the switch. Press the
switch down fully to initiate the express-down
feature. Press the top of the switch to stop
the window from lowering.
Window Lockout (Crew Cab)
o
(Window Lockout):The driver’s window
switches include a lockout feature. This prevents
the passenger’s from operating their windows.
The driver can still operate all windows with
the lockout on. Press the button to turn the
lockout feature on and off.
Sliding Rear Window
To open the sliding rear window, pull the latch
toward the driver’s side of the vehicle.
To close the window, slide the window toward the
passenger’s side of the vehicle. The latch will
automatically lock into place. Try to open
the window without releasing the latch to be sure
the window is in the locked position.
Regular Cab Switches
Crew Cab Switches
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Sun Visors
To block out glare, you can swing down the
visors. You can also swing them out to block glare
from the side.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an
elaborate break-in. But it will perform better in
the long run if you follow these guidelines:
Let your engine warm up before you
operate your vehicle under load.
Keep your speed at 55 mph (88 km/h) or
less for the rst 500 miles (805 km).
Do not drive at any one speed, fast or
slow, for the rst 500 miles (805 km).
Do not make full-throttle starts.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time
your new brake linings are not yet broken
in. Hard stops with new linings can mean
premature wear and earlier replacement.
Follow this breaking-in guideline every time
you get new brake linings.
Use the lowest gear you can when you start
a loaded vehicle in motion and when going
up hills to avoid overloading the engine.
Check and adjust engine and transmission
uid levels often and be sure tires are
properly in ated for the load you are
carrying.
If you have a Caterpillar®diesel engine, see
the Caterpillar®Diesel Engine Operation
and Maintenance Manual.
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Ignition Positions
With your key in the ignition switch, you can turn it
to five different positions.
A (ACCESSORY):This position allows you to use
things like the radio, power windows and the
windshield wipers when the engine is off. To get
into ACCESSORY, push in the key and turn it
toward you. Your steering wheel will remain
locked, just as it was before you inserted the key.B (LOCK):This position locks your ignition,
steering wheel and transmission. It is a
theft-deterrent feature. You will only be able to
remove your key when the ignition is turned
to LOCK.
C (OFF):This position lets you turn off the engine
but still turn the steering wheel. It does not lock
the steering wheel like LOCK. Use OFF if
you must have your vehicle in motion while the
engine is off.
D (RUN):This is the position for driving.
The battery could be drained if you leave the key
in the ACCESSORY or RUN position with the
engine off. You may not be able to start your
vehicle if the battery is allowed to drain for
an extended period of time.
E (START):This position starts your engine.
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Key In the Ignition
Never leave your vehicle with the keys inside, as it
is an easy target for joy riders or thieves. If you
leave the key in the ignition and park your vehicle,
a chime will sound, when you open the driver’s
door. Always remember to remove your key from
the ignition and take it with you. This will lock
your ignition and transaxle. Also, always remember
to lock the doors.
The battery could be drained if you leave the
key in the ignition while your vehicle is parked.
You may not be able to start your vehicle after it has
been parked for an extended period of time.
Engine Starter Over-Crank
Protection
Your vehicle may have an engine starter
over-crank protection system. If the starter motor
overheats and shuts off due to over-cranking,
the motor must cool down before it will reset and
allow starter operation. It can take up to
six minutes before the starter will work again.
Starting the Gasoline Engine
The 8th digit of your Vehicle Identification
Number (VIN) shows the code letter for your
engine. Use this number to verify the type of
engine in your vehicle. SeeVehicle Identi cation
Number (VIN) on page 340. Follow the proper steps
to start the engine.
To start a diesel engine, seeStarting the Diesel
Engine on page 100.
Automatic Transmission
Set the parking brake and move your shift lever to
NEUTRAL (N) or PARK (P), if so equipped. Your
engine will not start in any other position — that is a
safety feature.
Manual Transmission
Set the parking brake, shift to neutral NEUTRAL (N)
and hold the clutch pedal to the floor while starting
the engine.
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The following tips will help you get good starting in
cold weather.
•Use the recommended engine oil when the
outside temperature drops below freezing.
SeeEngine Oil (Caterpillar
®Diesel Engine) on
page 268orEngine Oil (Gasoline Engine)
on page 268orEngine Oil (DURAMAX
®/Isuzu
Diesel Engine) on page 272. When the
outside temperature drops below 0°F (−18°C),
use of the optional engine coolant block
heater is recommended.
•If you experience longer cranking times, notice
an unusual amount of exhaust smoke or are
at higher altitudes (over 7,000 ft. or 2 135 m),
you may use your optional engine coolant
block heater. SeeEngine Coolant Heater on
page 111.
•SeeWhat Fuel to Use on page 253for
information on what fuel to use in cold
weather.
Cold Weather Starting
(Caterpillar®Diesel)
Because the diesel engine uses compression
ignition, it is harder to start in cold weather than a
gasoline engine. The air intake heater and use
of the proper engine oil, optional engine coolant
heaters and optional ether injection systems
help cold weather starting. See the Caterpillar
®
Diesel Engine Operation & Maintenance Manual
for more information.
Restarting the Diesel Engine While
Moving (Automatic Transmission)
If you have to restart the engine while the vehicle
is moving, you will first have to shift to
NEUTRAL (N). This safety feature prevents
starting the engine when the transmission is in a
drive gear for more information.
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Diesel Engine Exhaust Brake
If your vehicle has a Isuzu 6H or Caterpillar®
Diesel Engine, it may have an exhaust brake,
which is located in the exhaust system.
If your vehicle has a 6.6L DURAMAX
®6600
Diesel Engine, it may have an exhaust brake,
which is controlled through the turbocharger.
The exhaust brake for both engines operates
the same.
The exhaust brake
switch is located in the
instrument panel
switchbank.
Push the bottom of the switch to turn the exhaust
brake on. When you push the top of the switch,
the exhaust brake will turn off.
There is an indicator light on the instrument panel
similar to the symbol on the switch, that will come
on when the exhaust brake is active. SeeExhaust
Brake Indicator Light on page 178for more
information.When using the exhaust brake, the proper gear
range selection is important. The exhaust brake will
be most effective if the gear range selected is the
lowest possible range that does not allow the
engine rpm to go more than 200 rpm above rated
(full load) rpm. If you have a Caterpillar®Diesel
Engine, do not exceed 2900 rpm. If you have a
Isuzu 6H Diesel engine, do not exceed 2550 rpm.
If you have a DURAMAX
®6600 Diesel Engine, do
not exceed 3600 rpm.
If your vehicle has an Allison
®
1000/2200/2300/2500 series automatic
transmission and press this button, the
transmission will downshift to a factory default
setting of third gear. To change the default setting,
or for more information on factory default
settings, contact your dealer for assistance.
The accelerator and clutch pedals must be
released in order for the exhaust brake to engage.
The exhaust brake will automatically shut off
when the anti-lock brake system is active.
If your vehicle has a Caterpillar
®Diesel Engine or
a DURAMAX®6600 Diesel Engine, the exhaust
brake will become active in cruise control
when you exceed the set speed by 3 to 5 mph.
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