set CHEVROLET KODIAK 2007 User Guide

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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Automatic Transmission Operation
We build vehicles with Allison®five and
six-speed automatic transmissions. This part of
the manual covers the basics of these. With these
transmissions, you will find another Allison
®
manual in your vehicle that goes into more detail.
On the headliner, in front of and above the
driver, or in some other place near the driver, you
will see a label that describes important operating
facts about the automatic transmission in your
vehicle. Make sure you follow the instructions on
this label.
Be sure to keep your parking brake set until you
are ready to shift into DRIVE (D), and press
the brake pedal while shifting from NEUTRAL (N)
or PARK (P) to a drive gear.
All vehicles equipped with automatic transmissions
can be started in PARK (P), if equipped, or in
NEUTRAL (N). See the Allison
®Transmission
Operator’s Manual in your vehicle for more
information about this.
{CAUTION:
It can be dangerous to get out of your
vehicle without the parking brake rmly
set. Your vehicle can roll. If you have left
the engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle will not move,
even when you are on fairly level ground,
always set the parking brake.
{CAUTION:
Shifting into a drive gear while your
engine is running at high speed is
dangerous. Unless your foot is rmly on
the brake pedal, your vehicle could move
very rapidly. You could lose control and
hit people or objects. Do not shift into a
drive gear while your engine is running at
high speed.
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Overdrive Defeat
If your vehicle has this feature, you can select not
to shift up to fifth gear. This is useful when
towing or under a heavy load.
The overdrive defeat
switch is located in
the instrument panel
to the right of the
steering column.
Press the switch to limit the transmission to
fourth gear. This will allow for fewer downshifts
while pulling a trailer or under a heavy load.
The indicator light in the switch will come on
whenever overdrive defeat is active.
Manual Transmission Operation
Using the Clutch
When you are starting to move the vehicle, it is
important to begin with the engine speed at idle.
Then start to engage the clutch and listen for an
engine speed drop of about 100 rpm. At this point,
the clutch is engaging, so you should increase the
engine speed and fully engage the clutch. It is
important not to increase the engine speed sooner
or before the clutch begins its engagement. If you
do, you can cause damage to your vehicle.
Double-Clutching
You must use the double-clutching method when
you shift an unsynchronized gear set. Disengage
the clutch, shift to NEUTRAL and engage the
clutch. When upshifting, slow the engine until the
engine rpm and road speed match. When
downshifting, accelerate the engine until the
engine rpm and road speed match. Then quickly
disengage the clutch and move the shift lever
to the next gear position and engage the clutch.
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If your vehicle has
four-wheel drive, the
transfer case knob
is located to the right of
the steering wheel
on the instrument panel.
Use this knob to shift
into and out of
four-wheel drive.
An indicator light shows you which position the
transfer case is in. The indicator lights come
on briefly when you turn on the ignition and
one stays on. If the lights do not come on, you
should take your vehicle to your dealer for service.
An indicator light flashes while shifting the
transfer case. It will remain on when the shift is
complete. If for some reason the transfer
case cannot make a requested shift, it returns to
the last chosen setting.Recommended Transfer Case Settings
Driving ConditionsTransfer Case Settings
2m4m4nN
Normal YES
Severe YES
Extreme YES
Vehicle in Tow* YES
*SeeTowing Your Vehicle on page 241for further
information.
2m(Two-Wheel High):This setting is for driving
in most street and highway situations. The
transfer case does not drive the front axle in
two-wheel drive. The front-axle spins if the front
wheel hubs are locked. Be sure to unlock the hubs
to achieve the best fuel economy.
4
m(Four-Wheel High):Use Four-Wheel High
when you need extra traction, such as on snowy or
icy roads or in most off-road situations. Be sure
the front wheel hubs are locked when you want to
drive in Four-Wheel High.
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4n(Four-Wheel Low):This setting sends
maximum power to all four wheels. You might
choose Four-Wheel Low if you are driving off-road
in deep sand, deep mud, and climbing or
descending steep hills. Be sure the front wheel
hubs are locked when you want to drive in
Four-Wheel Low.
{CAUTION:
Shifting the transfer case to NEUTRAL
can cause your vehicle to roll even if the
transmission is in PARK (P). You or
someone else could be injured. If you are
going to leave your vehicle, set the
parking brake and shift the transmission
to PARK (P) and make sure the transfer
case is in a drive gear.Notice:If your vehicle has an Allison
®
transmission and you try to put the
transmission in PARK (P) while the transfer
case is in Four-Wheel Low, the transmission
might not go into PARK (P) and could damage
your vehicle. When parking your vehicle,
make sure the transfer case is in Two-Wheel
High or Four-Wheel High.
NEUTRAL:Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle.
Shifting Into Four-Wheel High
Turn the knob to four-wheel high. This can be
done at 3 mph or less, while you are shifting out
of Four-Wheel Low. The indicator light flashes
while shifting. It remains on after the shift is
complete. Be sure to lock your front hubs.
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Shifting Into Two-Wheel High
Turn the knob to Two-Wheel High. This can be
done at 3 mph or less, while you are shifting out of
Four-Wheel Low.
Shifting Into Four-Wheel Low
To shift to Four-Wheel Low, the vehicle’s engine
must be running and the vehicle must be stopped
or moving less than 3 mph (5 km/h) with the
transmission in NEUTRAL (N). The preferred
method for shifting into Four-Wheel Low is to have
your vehicle moving 1 or 2 mph (1.6 to 3.2 km/h).
Turn the knob to Four-Wheel Low. You must
wait for the Four-Wheel Low indicator light to stop
flashing and remain on before shifting the
transmission into gear. Be sure to lock the
front hubs.Notice:Shifting the transmission into gear
before the Four-Wheel Drive Low indicator light
has stopped ashing could damage the
transfer case. To help avoid damaging your
vehicle, always wait for the Four-Wheel
Drive Low indicator light to stop ashing
before shifting the transmission into gear.
If you turn the knob to Four-Wheel Low while your
vehicle is in gear and/or moving, the Four-Wheel
Low indicator light flashes for 30 seconds and
does not complete the shift unless your vehicle is
moving less than 3 mph (4.8 km/h) and the
transmission is in NEUTRAL (N). After 30 seconds,
the transfer case returns to the setting last
chosen. If your vehicle is in gear and moving less
than 3 mph (4.8 km/h), the transfer case shifts
to Four-Wheel High.
122

Shifting Out of Four-Wheel Low
To shift from Four-Wheel Low to Four-Wheel High
or Two-Wheel High, your vehicle must be
stopped or moving less than 3 mph (5 km/h) with
the transmission in NEUTRAL (N) and the
engine running. The preferred method for shifting
out of Four-Wheel Low is to have your vehicle
moving 1 or 2 mph (1.6 to 3.2 km/h). Turn the knob
to Four-Wheel High or Two-Wheel High. You
must wait for the Four-Wheel High or Two-Wheel
High indicator light to stop flashing and remain
on before shifting the transmission into gear.
Notice:Shifting the transmission into gear
before the Four-Wheel High or Two-Wheel High
indicator light has stopped ashing could
damage the transfer case. To help avoid
damaging your vehicle, always wait for the
Four-Wheel High or Two-Wheel High indicator
light to stop ashing before shifting the
transmission into gear.
If the knob is turned to Four-Wheel High or
Two-Wheel High while your vehicle is in gear and/or
moving, the Four-Wheel High or Two-Wheel high
indicator light flashes for 30 seconds. It will not
complete the shift unless your vehicle is moving
less than 3 mph (5 km/h) with the transmission in
NEUTRAL (N).
Shifting Into NEUTRAL
Before shifting the transfer case to NEUTRAL, first
make sure the vehicle is parked so that it will
not roll.
1. Set the parking brake.
2. Start the vehicle.
3. Put the transmission in NEUTRAL (N).
4. Shift the transfer case to Two-Wheel High.
5. Turn the transfer case knob all of the way past
Four-Wheel Low and hold it there for a
minimum of 10 seconds. The NEUTRAL
indicator light comes on.
6. Shift the transmission to REVERSE (R) for
one second, then shift the transmission to
DRIVE (D) for one second.
7. Turn the ignition to OFF.
8. Place the transmission shift lever in
PARK. (P).
9. Turn the ignition to LOCK.
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Shifting Out of NEUTRAL
To shift the transfer case out of NEUTRAL, do the
following:
1. Set the parking brake and apply the regular
brake pedal.
2. Turn the ignition to RUN with the engine off.
3. Put the transmission in NEUTRAL (N).
4. Turn the transfer case knob to the desired
shift position (Two-Wheel High, Four-Wheel
High, Four-Wheel Low).
5. After the transfer case has shifted out of
NEUTRAL, the indicator light goes out.Notice:Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
6. Release the parking brake.
7. Start the engine and shift the transmission
lever to the desired position.
Excessively shifting the transfer case into or out of
the different modes can cause the transfer case
to enter the shift protection mode. This protects the
transfer case from possible damage and only
allows the transfer case to respond to one shift per
10 seconds. The transfer case can stay in this
mode for up to three minutes.
124

To set the foot pedal parking brake, hold the
regular brake pedal down with your right foot. Push
down the parking brake pedal with your left foot.
To set the hand lever parking brake, hold the
regular brake pedal down with your right foot. Pull
up on the handle with your right hand, until it stops.
If the ignition is on when the parking brake is set,
the brake system warning light will come on.
To release the foot pedal parking brake, hold
the regular brake pedal down. Pull the brake
release handle, located just above the parking
brake pedal, to release the parking brake.
To release the hand lever parking brake, hold the
regular brake pedal down and push down on
the handle until it stops.
If the ignition is on when the parking brake is
released, the brake system warning light will
go off.Parking Brake (with Air Brakes)
If your vehicle has
air brakes, you will
have this parking brake.
It is located above
the radio in the
instrument panel.
Pulling it out applies the parking brake. The
parking brake light will come on when the air
parking brake is applied.
126

Running the Engine While Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust
into your vehicle. See the earlier caution
underEngine Exhaust on page 131.
Also, idling in a closed-in place can let
deadly carbon monoxide (CO) into your
vehicle even if the climate control fan is at
the highest setting. One place this can
happen is a garage. Exhaust — with
CO — can come in easily. NEVER park in
a garage with the engine running.
Another closed-in place can be a blizzard.
SeeWinter Driving on page 231.
{CAUTION:
It can be dangerous to get out of your
vehicle if the automatic transmission shift
lever is not fully in PARK (P) with the
parking brake rmly set. Your vehicle can
roll. Do not leave your vehicle when the
engine is running unless you have to.
If you have left the engine running, the
vehicle can move suddenly. You or others
could be injured. To be sure your vehicle
will not move, even when it is on fairly
level ground, always set the parking brake
and move the automatic transmission
shift lever to PARK (P), or the manual
transmission shift lever to NEUTRAL.
Follow the proper steps to be sure your vehicle
will not move.
132