1994 GMC SIERRA light

Brake Wear
Your vehicle has front disc brakes and rear drum brakes. If you have a
C 3500 HD model, it has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make
a high-pitched
warning sound when the brake pads are worn and new pads are needed. The
sound may come and go or be heard
all the time your vehicle is moving
(except when you are pushing on the brake pedal firmly).
The brake wear warning sound means that sooner or later your
brakes won’t work well. That could lead to an accident.
When
you hear the brake wear warning sound, have your vehicle
serviced.
NOTICE:
Continuing to drive with worn-out brake pads could result in
costly brake repair.
Some driving conditions or climates may cause a brake squeal when the
brakes are first applied or lightly applied. This does not mean something is
wrong with your brakes.
If
you have rear drum brakes, they don’t have wear indicators, but if you
ever hear a rear brake rubbing noise, have
the rear brake linings inspected.
Also, the rear brake drums should be removed and inspected each time the
tires are removed for rotation or changing. When you have
the front brakes
replaced, have the rear brakes inspected, too.
Brake linings should always be replaced
as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to normal height, or if
there is a rapid increase in pedal travel. This could be a sign of brake
trouble.
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Wheel Nut Torque
For vehicle with dual wheels, wnen the vehicle, wheel or Tasteners are new,
have the torque set at
the first 100, 1,000 and 6,000 miles (1 60, 1600 and
9600 km). Use the torque specified
in the appropriate Specification Chart
later
in this section.
Single Belt Accessory Drive
If your new vehicle uses a serpentine belt, it is lighter and more durable than
systems with several belts.
The belt runs over or around the pulleys on the engine.
A tensioner may be
used
to keep the belt tight at all times. The tensioner also makes replacing
the belt easier.
If you need to replace the belt, be sure to get the correct
replacement belt. Your dealership or parts supplier can help you with this.
The Accessory Drive belt Routing label on your vehicle will show
you how
to route
the belt your vehicle uses.
Windshield Wiper Blade Inserts
To replace the
windshield wiper
blade insert, lift the
wiper arm and rotate
the blade until
it is
facing away from the
windshield.
Unlatch
the end of the insert from the holding clips. Remove the insert and
slide a new
one in place. Make sure the blade is secured in the clips.
Air Conditioning
Every now and then have your dealership check your air conditioning
system
to be sure it has not lost any cooling ability. If you think the system
is not working properly, have your dealership check it out as soon as
possible.
The air conditioning
will not work when the temperature is below 40°F
(4°C).
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Contact your dealer to learn how to prepare your vehicle for longer storage
periods.
Bulb Replacement
Before you replace any bulbs, be sure that all the lights are\
off and the
engine isn’t running.
Sealed Beam Headlights
I
1. Remove the four
screws from the
headlight retainer.
2. Pull the headlight
out and remove
the retainer.
3.
4.
5.
Unplug and
remove the
headlight.
Plug in the new
headlight and put
it in place.
Install the
retainer
to the
headlight and
tighten the
screws.
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Halogen Bulbs
NOTICE:
Avoid touching the bulb or letting it come in contact with
anything damp. Oil from your skin or moisture on the bulb can
cause the bulb to explode when it is turned on.
If either comes in
contact with the bulb, clean it with alcohol or a suitable
degreaser and wipe the bulb dry.
Composite Headlights
1.
2.
Remove the two
screws at the top
of the radiator
support.
Pull the headlight
lens assembly
out.
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3. Unplug the
electrical
connector.
4. Turn the bulb to
the left and
i
remove it.
5. Put the new bulb in the lens assembly and turn it to the right until it is
tight.
6. Plug in the electrical connector.
7. Put the headlight lens assembly back into the vehicle. Install and
tighten the two screws.
Front Parkingflurn Signal Lights with
Sealed Beam Headlights
1. Remove the two screws at the inside edge of the parking/turn signal
2. Remove the light assembly by swinging it out from the inside edge and
3. Squeeze the tab on the side of the light socket while turning the socket
4. Pull the socket out of the light assembly.
5. Push in gently on the bulb, turn it to the left and remove it from the
6. Put the new bulb in the socket, gently press in on the bulb and turn it to
7. Put the socket back into the light assembly and turn it to the right until
8. Put the parking/turn signal light assembly back into the vehicle and
light assembly.
sliding
it out at the outside edge.
to the
left.
socket.
the right until it is tight.
it locks.
tighten the screws.
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Front Parkingnurn Signal Lights with
Composite Headlights
-7
I. Remove the
screws and take
out the parkinghurn
signal light
assembly.
2. Squeeze the tab
on the side of the
light socket while
turning the socket
to the left.
3.
4.
Pull the socket
out
of the light
assembly.
Push
in gently on
the bulb, turn it to
the left and
remove
it from
the socket.
5. Put the new bulb in the socket, gently press in on the bulb and turn it to
the right
until it is tight.
6. Put the socket back into the light assembly and turn it socket to the
right
until it locks.
7. Put the parkinghrn signal light assembly back into the vehicle and
tighten the screws.
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Side Marker Lights with Sealed Beam and Composite Headhghts
1. Remove the
screws and
pull
out the
parkinghrn
signal light
assembly.
2. Reach through
the opening
and
turn the side
marker bulb
socket to
the left
and remove
it.
3.
4.
Pull the bulb
straight out
of the
socket.
Put
a new bulb
into the socket
and push
it in
until
it is tight.
5. Put the socket back into the side marker assembly and turn it to the
6. Replace the parkinghurn signal light assembly and tighten the screws.
right to tighten
it.
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Fender Marker Lights-
Dual Rear Wheel Pickup Models
1.
2.
3.
Remove the screws and take
the fender marker
assembly out
of
the fender.
Turn the bulb
socket to the left
and remove it
from the lens assembly.
Pull the bulb straight out of the
socket.
4. Put a new bulb into the socket and push it in until it is tight.
5. Put the socket back into the lens assembly and turn it to th\
e right to
tighten it.
6. Replace the lens and tighten the screws.
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