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Matching Transmitter(s) to Your
Vehicle
Each remote keyless entry transmitter is coded to
prevent another transmitter from unlocking your
vehicle. If a transmitter is lost or stolen, a
replacement can be purchased through your
dealer. Remember to bring any remaining
transmitters with you when you go to your dealer.
When the dealer matches the replacement
transmitter to your vehicle, any remaining
transmitters must also be matched. Once your
dealer has coded the new transmitter, the
lost transmitter will not unlock your vehicle. Each
vehicle can have a maximum of four transmitters
matched to it.
Battery Replacement
Under normal use, the battery in your remote
keyless entry transmitter should last about
two years.
You can tell the battery is weak if the transmitter
won’t work at the normal range in any location.
If you have to get close to your vehicle before the
transmitter works, it’s probably time to change
the battery.
Notice:When replacing the battery, use care
not to touch any of the circuitry. Static
from your body transferred to these surfaces
may damage the transmitter.
1. Insert a thin object, such as a coin, into the
slot between the covers of the transmitter
near the key ring hole. Remove the bottom by
twisting the object.
2. Remove and replace the battery, positive (+)
side down. Use one CR2032 battery.
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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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Page 96 of 430

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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Starter Motor Operation
•The starter motor will disengage if you release
the key or the engine reaches a predetermined
engine speed.
•To prevent overheating, the starter motor will
disengage after continuously operating for
15 seconds. You must release the key
from the start position to re-engage the starter.
•The starter motor will not engage if the engine
is already running.
•The starter motor will disengage if, after
two seconds, the starter pinion gear does not
engage the flywheel or there is no engine
rpm signal from the engine speed sensor.
Starting Your Engine
1. Without pushing the accelerator pedal, turn
your ignition key to START. When the
engine starts, let go of the key. The idle speed
will go down as your engine gets warm.2. If the engine does not start in 10 seconds,
push the accelerator pedal all the way down
and crank the engine for five more seconds,
unless it starts sooner.
3. If your engine still will not start, or starts but
then stops, it could be flooded with too much
gasoline.
Wait 15 seconds to let the starter motor cool
down. Do Steps 1 through 3 again.
When the engine starts, let go of the key and
the accelerator pedal.
Notice:Your engine is designed to work with
the electronics in your vehicle. If you add
electrical parts or accessories, you could
change the way the engine operates. Before
adding electrical equipment, check with your
dealer. If you do not, your engine might not
perform properly. Any resulting damage would
not be covered by your vehicle’s warranty.
If you ever need to have your vehicle towed, see
Towing Your Vehicle on page 241.
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Starting the Diesel Engine
Your vehicle’s diesel engine starts differently than
a gasoline engine. Read the following pages to
learn how to start, restart, warm-up, and stop your
diesel engine.
The information applies to Caterpillar
®Diesel
Engine, 6.6L DURAMAX®Diesel Engine, Isuzu 6H
Diesel Engine, unless otherwise noted.
If you have a Caterpillar
®Diesel Engine, also refer
to your Caterpillar®Diesel Engine Operation &
Maintenance Manual for the starting procedure.
Automatic Transmission
Move your shift lever to PARK (P) or
NEUTRAL (N). Your engine will not start in
any other position — that is a safety feature.
To restart when you are already moving,
use NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could
damage the transmission. Shift to PARK (P)
only when your vehicle is stopped.
Manual Transmission
Move your shift lever to NEUTRAL and hold the
clutch pedal to the floor while starting the engine.
Your vehicle will not start if the clutch pedal is not all
the way down — that is a safety feature.
Starting Your Engine
1. Turn your ignition key to RUN.
Observe the wait to start light. SeeWait to
Start Indicator on page 174. This light may not
come on if the engine is hot.
If you have a Caterpillar
®diesel engine, see
your Caterpillar®Diesel Engine Operation
& Maintenance Manual for proper wait to start
light operation.
2. As soon as the wait to start light goes off,
immediately turn the ignition key to START.
When the engine starts, let go of the key.
If your vehicle is equipped with a DURAMAX
®
6600 Diesel Engine, it has a fast warm-up
glow plug system. The wait to start light
will illuminate for a much shorter time than
most diesel engines, due to the rapid heating
of the glow plug system.
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Notice:Holding your key in START for longer
than 15 seconds at a time will cause your
battery to be drained much sooner. And the
excessive heat can damage your starter motor.
Notice:If the wait to start light stays on
after starting your vehicle, your vehicle may
not run properly. Have your vehicle serviced
right away.
3. If the engine does not start after 15 seconds
of cranking, turn the ignition key to OFF. Wait
one minute for the starter to cool, then try
the same steps again.
If you are trying to start your engine after you
have run out of fuel, seeRunning Out of Fuel
on page 262.
When your engine is cold, let it run for a few
minutes before you move your vehicle. This lets
oil pressure build up. Your engine will sound louder
when it is cold.
Notice:If you are not in an idling vehicle and
the engine overheats, you would not be there to
see the overheated engine indication. This
could damage your vehicle. Do not let your
engine run when you are not in your vehicle.Cold Weather Starting
If your vehicle has the 6.6L DURAMAX®Diesel
Engine and the Isuzu 6H Diesel Engine, the
following notice applies:
Notice:Your diesel engine has an electric air
intake heater system which reduces white
smoke and helps start the engine in cold
weather. Do not spray starting uid into the air
intake where it can contact the heater elements.
If you do not have the GM Automatic Ether
Injection System, do not use starting uid or
you could damage your engine. If you have the
GM system, use only GM approved starting
uid that has been tested to establish
compatibility with the air inlet heater system.
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