CHEVROLET C3500 HD 2002 4.G Service Manual

1-34
CAUTION:
Never do this.
Here two children are wearing the same belt.
The belt can't properly spread the impact forces.
In a crash, the two children can be crushed
together and seriously injured. A belt must be
used by only one person at a time.
Q:What if a child is wearing a lap-shoulder belt,
but the child is so small that the shoulder belt is
very close to the child's face or neck?
A:Move the child toward the center of the vehicle,
but be sure that the shoulder belt still is on the
child's shoulder, so that in a crash the child's upper
body would have the restraint that belts provide.
If the child is so small that the shoulder belt is still
very close to the child's face or neck, you might
want to place the child in a seat that has a lap belt,
if your vehicle has one.

1-35
CAUTION:
Never do this.
Here a child is sitting in a seat that has a
lap
-shoulder belt, but the shoulder part is behind
the child. If the child wears the belt in this way,
in a crash the child might slide under the belt.
The belt's force would then be applied right on
the child's abdomen. That could cause serious or
fatal injuries.
Wherever the child sits, the lap portion of the belt
should be worn low and snug on the hips, just touching
the child's thighs. This applies belt force to the child's
pelvic bones in a crash.

1-36
Safety Belt Extender
If the vehicle's safety belt will fasten around you,
you should use it.
But if a safety belt isn't long enough to fasten,
your dealer will order you an extender. It's free.
When you go in to order it, take the heaviest coat
you will wear, so the extender will be long enough for
you. The extender will be just for you, and just for the
seat in your vehicle that you choose. Don't let someone
else use it, and use it only for the seat it is made to fit.
To wear it, just attach it to the regular safety belt.
Checking Your Restraint Systems
Now and then, make sure the safety belt reminder light
and all your belts, buckles, latch plates, retractors and
anchorages are working properly. Look for any other
loose or damaged safety belt system parts. If you see
anything that might keep a safety belt system from
doing its job, have it repaired.
Torn or frayed safety belts may not protect you
in a crash. They can rip apart under impact forces.
If a belt is torn or frayed, get a new one right away.
Replacing Restraint System Parts
After a Crash
CAUTION:
A crash can damage the restraint systems in
your vehicle. A damaged restraint system may
not properly protect the person using it, resulting
in serious injury or even death in a crash. To help
make sure your restraint systems are working
properly after a crash, have them inspected
and any necessary replacements made as soon
as possible.
If you've had a crash, do you need new belts?
After a very minor collision, nothing may be necessary.
But if the belts were stretched, as they would be if worn
during a more severe crash, then you need new parts.
If belts are cut or damaged, replace them. Collision
damage also may mean you will need to have safety belt
or seat parts repaired or replaced. New parts and repairs
may be necessary even if the belt wasn't being used at
the time of the collision.

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
-4 Keys
2
-6 Door Locks
2
-7 Keyless Entry System (If Equipped)
2
-10 Theft
2
-11 Passlock

2-12 New Vehicle ªBreak-Inº
2
-12 Ignition Positions
2
-14 Starting Your Gasoline Engine
2
-16 Engine Coolant Heater (If Equipped)
2
-17 Automatic Transmission Operation
2
-21 Manual Transmission Operation
2
-23 Parking Brake
2
-24 Shifting Into PARK (P)
(Automatic Transmission Only)
2
-27 Shifting Out of PARK (P)
(Automatic Transmission Only)2
-27 Parking Your Vehicle
(Manual Transmission Models Only)
2
-28 Parking Over Things That Burn
2
-28 Engine Exhaust
2
-29 Running Your Engine While You're Parked
(Automatic Transmission)
2
-30 Tilt Wheel (If Equipped)
2
-30 Turn Signal/Multifunction Lever
2
-37 Exterior Lamps
2
-39 Interior Lamps
2
-41 Mirrors
2
-44 Storage Compartments
2
-48 Instrument Panel - Your Information System
2
-50 Instrument Panel Cluster
2
-52 Warning Lights, Gages and Indicators

2-2
Windows
CAUTION:
Leaving children in a vehicle with the windows
closed is dangerous. A child can be overcome by
the extreme heat and can suffer permanent
injuries or even death from heat stroke. Never
leave a child alone in a vehicle, especially with the
windows closed in warm or hot weather.
Manual Windows
Turn the hand crank on each door to raise or lower the
manual windows.

2-3 Power Windows (If Equipped)
The window switches located on the driver's door
armrest operate both the driver's and the passenger's
windows. The passenger door has an individual window
switch for that door only.
The power windows will work when the ignition has
been turned to ACCESSORY or RUN.
Press the rear of the switch to lower the window.
Press the front of the switch to raise the window.
The driver's window also has an express
-down feature
that allows the window to be lowered without holding
the switch. Press and hold AUTO for one second to
activate the express
-down mode. The express-down
mode can be canceled at any time by pressing the
opposite side of the switch. To open the window
partway, lightly tap the switch until the window is at
the desired position.

2-4
Keys
CAUTION:
Leaving children in a vehicle with the ignition
key is dangerous for many reasons. A child or
others could be badly injured or even killed.
They could operate the power windows or other
controls or even make the vehicle move. Don't
leave the keys in a vehicle with children.

2-5
Your vehicle has one
double
-sided key for the
ignition and the 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. You can have a lot of
trouble getting into your vehicle if you ever lock
your key inside. You may even have to damage
your vehicle to get in. So be sure you have an
extra key.
If you ever do get locked out of your vehicle, call the
GM Roadside Assistance Center. See ªRoadside
Assistanceº in the Index.

2-6
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.
From the outside, use your key or the keyless entry
system, if your vehicle has this feature.
To lock the door from the
inside, push down the
manual lock, located on
the door panels.
To unlock the door, pull the manual lock up.

2-7 Power Door Locks (If Equipped)
Press the top of the power
door lock switch, marked
LOCK, located on either
door to lock both doors at
once. Press the ribbed side
of the switch to unlock both
doors at once.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door.
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.