door lock CHEVROLET C/K 2003 Owners Manual

1-5
Seatback Adjustment
The seatback adjustment
knob is located on the
inboard side of the driver's
and passenger's seat
cushions.
To tilt the seatback rearward, turn the knob
counterclockwise. Turn the knob clockwise to
tilt the seatback forward.Fore
-and-Aft Adjustment
The fore-and-aft adjustment
lever is located underneath
the seat, in the front.
To slide the seat forward or rearward, move the
lever toward the driver's door. The seat will lock in
at 1/2 inch (1.5 cm) increments.

1-13
Q:If I'm a good driver, and I never drive far from
home, why should I wear safety belts?
A:You may be an excellent driver, but if you're in an
accident
-- even one that isn't your fault -- you
and your passengers can be hurt. Being a good
driver doesn't protect you from things beyond your
control, such as bad drivers.
Most accidents occur within 25 miles (40 km)
of home. And the greatest number of serious
injuries and deaths occur at speeds of less
than 40 mph (65 km/h).
Safety belts are for everyone.
How to Wear Safety Belts Properly
Adults
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different rules
for smaller children and babies. If a child will be riding
in your vehicle, see the part of this manual called
ªChildren.º Follow those rules for everyone's
protection.
First, you'll want to know which restraint systems your
vehicle has.
We'll start with the driver position.
Driver Position
This part describes the driver's restraint system.
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here's how to wear
it properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To see
how, see ªSeatsº in the Index.

2-
2-1
Section 2 Features and Controls
Here you can learn about the many standard and optional features on your vehicle, and information on starting,
shifting and braking. Also explained are the instrument panel and the warning systems that tell you if everything is
working properly
-- and what to do if you have a problem.
2
-2 Windows
2-5 Keys
2-7 Door Locks
2-8 Keyless Entry System (If Equipped)
2-12 Switchbanks
2-13 Theft
2-14 New Vehicle ªBreak-Inº
2-15 Ignition Positions
2-16 Starting Your Gasoline Engine
2-19 Starting the Diesel Engine
2-24 Starting Your DURAMAX
Diesel Engine
2-27 Engine Checks Before Operating
2-28 Engine Coolant Heater (If Equipped)
2-30 Diesel Engine Exhaust Brake (If Equipped)
2-31 Two-Speed Rear Axle Electric Shift Control
(If Equipped)
2
-34 Automatic Transmission Operation
2-36 Manual Transmission Operation
2-40 Parking
2-45 Parking Over Things That Burn
2-45 Engine Exhaust2
-46 Running Your Engine While You're Parked
(Automatic Transmission)
2
-47 Horn
2-48 Tilt Wheel (If Equipped)
2-48 Turn Signal/Multifunction Lever
2-55 Inter-Axle Differential Lock Control
(If Equipped)
2
-56 Rear Axle Differential Lock Control
(If Equipped)
2
-57 Exterior Lamps
2-60 Interior Lamps
2-61 Mirrors
2-63 Storage Compartments
2-65 Accessory Power Outlets
2-66 Trailer Connections (C4/C5 Models Only)
(If Equipped)
2
-67 Trailer Connections (C6/C7/C8 Models Only)
(If Equipped)
2
-68 The Instrument Panel-Your
Information System
2
-70 Instrument Panel Cluster
2-73 Warning Lights, Gages and Indicators

2-4
Express-Down Feature
The driver's window also has an express
-down feature
that allows the window to be lowered without holding
down the switch. Press and hold the rear of the window
switch labeled AUTO for one second to activate the
express
-down mode.
The express
-down mode can be cancelled at any time by
pressing the front of the switch. To open the window
part way, lightly tap the switch until the window is at the
desired position.
Lockout Feature (If Equipped)
If you have a Crew Cab model with power windows, the
driver's door will have a lockout feature. When
engaged, this feature will prevent all window switches,
except the driver's window switches, from operating.
This switch is located above the four window switches
on the driver's door.. When the switch is not engaged,
all windows will return to normal operation.
Sliding Rear Window (If Equipped)
To open the sliding rear window, unlock the latch
lever by pulling the lever 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 lever will
automatically snap onto the latch plate. Try to open the
window without releasing the latch lever to be sure the
window is in the locked position.

2-6
Your vehicle has one
double
-sided key for the
ignition and all door locks.
If you ever lose your key, your dealer will be able to
assist you with obtaining a new one.NOTICE:
Your vehicle has a number of new features that
can help prevent theft. But you can have a lot
of trouble getting into your vehicle if you ever
lock your keys inside. You may even have to
damage your vehicle to get in. So be sure you
have extra keys.
If you ever do get locked out of your vehicle, call GM
Roadside Assistance Center. See ªRoadside Assistanceº
in the Index.

2-7
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 won't open it. You increase the
chance of being thrown out of the vehicle in
a crash if the doors aren't locked. So, wear
safety belts properly and lock the doors
whenever you drive.

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.
See ªKeyless Entry Systemº later in this section for
more information.
To lock or unlock your door from the outside, use
your key.
To lock your door from the
inside, slide the manual
lever on your door down.
To unlock the door, slide the
manual lever up.

2-8 Power Door Locks (If Equipped)
If your vehicle has power
door locks, press the bottom
side of the power door lock
switch to lock all the doors
at once. To unlock all the
doors at once, press the
top side of the power door
lock switch.
When a door is locked, the inside door handle will
not work.
Keyless Entry System (If Equipped)
If your vehicle has this feature, you can lock and unlock
your doors from about 3 feet (1 m) up to 30 feet (9 m)
away using the remote keyless entry transmitter supplied
with your vehicle.
Your keyless entry system operates on a radio frequency
subject to Federal Communications Commission (FCC)
Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation of
the device.

2-9
Changes or modifications to this system by other than an
authorized service facility could void authorization to
use this equipment.
At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:

Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy
or snowy weather.

Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.

Check to determine if battery replacement is
necessary. See the instructions that follow.

If you're still having trouble, see your dealer or a
qualified technician for service.Operation
To unlock the driver's door, press the UNLOCK
button one time. If you press the button again within
five seconds, all of the doors will unlock. When the
UNLOCK button is pressed, the interior dome lamps
are turned on for about 40 seconds or until the ignition
switch is activated. Press the LOCK button to lock
all doors.

2-11
2. Remove and replace the battery, positive (+) side
down. Use one Panasonic
type CR2032 battery:
3. Align the covers and snap them together.
4. Check the operation of the transmitter. If the
transmitter does not work after battery replacement,
it may need to be resynchronized to your vehicle.
See ªResynchronizationº following.Resynchronization
Resynchronization may be necessary due to the security
method used by this system. The transmitter does not
send the same signal twice to the receiver. The receiver
will not respond to a signal it has been sent previously.
This prevents anyone from recording and playing back
the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and simultaneously press and hold the LOCK
and UNLOCK buttons on the transmitter for at least
five seconds. The door locks should cycle to confirm
resynchronization. If the locks do not cycle, see your
dealer for service.

2-13
Theft
Vehicle theft is big business, especially in some cities,
and even commercial vehicles are no exception.
Although your vehicle has a number of theft
-deterrent
features, we know that nothing we put on it can make
it impossible to steal. However, there are ways you
can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it's an
easy target for joy riders or professional thieves
-- so
don't do it.
Remember to remove your key and take it with you.
Always do this. When you take your key with you,
your ignition will be locked. Also remember to lock
the doors.