2006 CHEVROLET EXPRESS parking brake

Automatic Transmission Operation
(Six Speed Automatic Transmission)............3-27
Automatic Transmission Operation
(Four Speed Automatic Transmission)..........3-32
Tow/Haul Mode ............................................3-34
Parking Brake..............................................3-36
Shifting Into Park..........................................3-37
Shifting Out of Park......................................3-38
Parking Over Things That Burn.......................3-39
Engine Exhaust............................................3-40
Running the Vehicle While Parked..................3-41Mirrors...........................................................3-42
Manual Rearview Mirror.................................3-42
Outside Manual Mirrors..................................3-42
Outside Towing Mirrors..................................3-42
Outside Power Mirrors...................................3-43
Outside Convex Mirror...................................3-43
Outside Heated Mirrors..................................3-44
Storage Areas................................................3-44
Section 3 Features and Controls
3-2

Fast Idle System
Fast Idle System with Switch
If the vehicle has this feature it is available only with
cruise control. The manual fast idle switch is operated
using the cruise control buttons located on the left
hand side of the steering wheel.
This system can be used to increase engine idle speed
whenever the following conditions are met:
•The park brake is set.
•The brake pedal is not pressed.
•The vehicle must not be moving and the accelerator
must not be pressed.
To control the fast idle:
•To Enable the Fast idle, press and release the
Cruise Control On/Off button and ensure that
the LED is lit.
•For the preset Fast Idle, press and release the
cruise set switch. This will set the preset fast
idle speed.
•For the variable fast idle, press and hold the
accelerator at the desired RPM, then press
and release the cruise control cruise set switch to
set the desired idle speed.When the fast idle is active the Driver Information
Center (DIC) will display “FAST IDLE ON.”
One of the following actions will turn off the fast idle:
•Pressing the brake.
•Selecting the Cancel button.
•Releasing the Parking Brake.
•The transmission shifter is moved out of P (Park) or
N (Neutral).
•Selecting the cruise control on/off button when it
was previously on.
Engine Coolant Heater
If the vehicle has the DURAMAX Diesel engine, see the
DURAMAX Diesel manual for more information.
The engine coolant heater can provide easier starting
and better fuel economy during engine warm-up in cold
weather conditions at or below 0°F (−18°C). Vehicles
with an engine coolant heater should be plugged
in at least four hours before starting. An internal
thermostat in the plug-end of the cord may exist which
will prevent engine coolant heater operation at
temperatures above 0°F (−18°C).
3-25

Automatic Transmission Operation
(Six Speed Automatic Transmission)
Vehicles with a six speed automatic transmission
have a shift position indicator within the instrument panel
cluster.
There are several different positions for the shift lever.
See “Range Selection Mode” later in this section.
P (Park):This position locks the rear wheels. It is the
best position to use when starting the engine because
the vehicle cannot move easily. When parked on a
hill, especially when the vehicle has a heavy load, you
might notice an increase in the effort to shift out of
P (Park). See Torque Lock (Automatic Transmission)
underShifting Into Park on page 3-37for more
information.
{WARNING:
It is dangerous to get out of the vehicle if the shift
lever is not fully in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the 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 the
vehicle will not move, even when you are on fairly
level ground, always set the parking brake and
move the shift lever to P (Park). SeeShifting Into
Park on page 3-37. If you are pulling a trailer, see
Towing a Trailer on page 5-30.
R (Reverse):Use this gear to back up.
Notice:Shifting to R (Reverse) while the vehicle is
moving forward could damage the transmission. The
repairs would not be covered by the vehicle warranty.
Shift to R (Reverse) only after the vehicle is stopped.
To rock the vehicle back and forth to get out of snow, ice,
or sand without damaging the transmission, seeIf Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 5-18.
3-27

Automatic Transmission Operation
(Four Speed Automatic
Transmission)
There are several different positions for your shift lever.
P (Park):This position locks your rear wheels. It is
the best position to use when you start the engine
because the vehicle cannot move easily.
{WARNING:
It is dangerous to get out of the vehicle if the shift
lever is not fully in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the 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 the
vehicle will not move, even when you are on fairly
level ground, always set the parking brake and
move the shift lever to P (Park). SeeShifting Into
Park on page 3-37. If you are pulling a trailer, see
Towing a Trailer on page 5-30.
Make sure the shift lever is fully in P (Park) before
starting the engine. The vehicle has an automatic
transmission shift lock control system. You must first
press the brake pedal before you can shift from P (Park)
with the ignition in ON/RUN.
If you cannot shift out of P (Park), ease pressure on the
shift lever and push the shift lever all the way into
P (Park) as you maintain brake application. Then move
the shift lever into another gear. SeeShifting Out of
Park on page 3-38.
3-32

Cruise Grade Braking (Six Speed
Automatic Transmission)
Cruise Grade Braking operates only while cruise control
is engaged in Tow/Haul mode. Cruise Grade Braking
assists in maintaining desired vehicle speeds when
driving on downhill grades in cruise control by
automatically shifting to lower gears when the cruise set
speed is exceeded.
While in the Range Selection Mode (RSM) mode, cruise
grade braking is not available.
SeeAutomatic Transmission Operation (Six Speed
Automatic Transmission) on page 3-27orAutomatic
Transmission Operation (Four Speed Automatic
Transmission) on page 3-32.
Parking Brake
To set the parking brake, hold the regular brake pedal,
then push down the parking brake pedal.
If the ignition is on, the brake system warning light will
come on.
3-36

To release the parking brake, hold the regular brake
pedal down. Pull the handle, located just above
the parking brake pedal, with the parking brake symbol,
to release the parking brake.
If the ignition is on when the parking brake is released,
the brake system warning light will go off.
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.
If you are towing a trailer and are parking on a hill, see
Towing a Trailer on page 5-30.Shifting Into Park
{WARNING:
It can be dangerous to get out of the vehicle if the
shift lever is not fully in P (Park) with the parking
brake firmly set. The vehicle can roll. If you have
left the engine running, the vehicle can move
suddenly. You or others could be injured. To be
sure the vehicle will not move, even when you are
on fairly level ground, use the steps that follow.
If you are pulling a trailer, seeTowing a Trailer on
page 5-30.
1. Hold the brake pedal down and set the parking
brake. SeeParking Brake on page 3-36
2. Move the shift lever into P (Park) by pulling the shift
lever toward you and moving it up as far as it will go.
3. Turn the ignition key to LOCK/OFF.
4. Remove the key and take it with you. If you can
leave the vehicle with the ignition key in your
hand, the vehicle is in P (Park).
3-37

Leaving the Vehicle With the Engine
Running
{WARNING:
It can be dangerous to leave the vehicle with the
engine running. The vehicle could move suddenly
if the shift lever is not fully in P (Park) with the
parking brake firmly set. And, if you leave the
vehicle with the engine running, it could overheat
and even catch fire. You or others could be
injured. Do not leave the vehicle with the engine
running.
If you have to leave the vehicle with the engine running,
be sure the vehicle is in P (Park) and the parking
brake is firmly set before you leave it. After you move
the shift lever into P (Park), hold the regular brake pedal
down. Then, see if you can move the shift lever away
from P (Park) without first pulling it toward you. If
you can, it means that the shift lever was not fully locked
into P (Park).
Torque Lock
If you are parking on a hill and you do not shift the
vehicle into P (Park) properly, the weight of the vehicle
may put too much force on the parking pawl in the
transmission. You may find it difficult to pull the shift
lever out of P (Park). This is called torque lock. To
prevent torque lock, set the parking brake and then shift
into P (Park) properly before you leave the driver
seat. To find out how, seeShifting Into Park on
page 3-37.
When you are ready to drive, move the shift lever out of
P (Park) before you release the parking brake.
If torque lock does occur, you may need to have another
vehicle push yours a little uphill to take some of the
pressure from the parking pawl in the transmission, so
you can pull the shift lever out of P (Park).
Shifting Out of Park
The vehicle has an automatic transmission shift lock
control system. You have to fully apply the brakes before
you can shift from P (Park) when the ignition is in
ON/RUN. SeeAutomatic Transmission Operation
(Six Speed Automatic Transmission) on page 3-27or
Automatic Transmission Operation (Four Speed
Automatic Transmission) on page 3-32.
3-38

The shift lock control system is designed to do the
following:
•Prevent the ignition key from being removed unless
the shift lever is in P (Park).
•Prevent movement of the shift lever out of P (Park),
unless the ignition is in ON/RUN and the regular
brake pedal is applied.
The shift lock control system is always functional except
in the case of a dead battery or low voltage (less
than 9 V) battery.
If the vehicle has an uncharged battery or a battery with
low voltage, try charging or jump starting the battery.
SeeJump Starting on page 6-44for more information.
To shift out of P (Park) use the following:
1. Apply the brake pedal.
2. Move the shift lever to the desired position.If you still are unable to shift out of P (Park):
1. Ease the pressure on the shift lever.
2. While holding down the brake pedal, push the shift
lever all the way into P (Park)
3. Move the shift lever to the desired position.
If you are still having a problem shifting, then have the
vehicle serviced.
Parking Over Things That Burn
{WARNING:
Things that can burn could touch hot exhaust
parts under the vehicle and ignite. Do not park
over papers, leaves, dry grass, or other things that
can burn.
3-39