1999 CHEVROLET SILVERADO bulb

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2-45 Turn Signal and Lane Change Signals
The turn signal has two upward (for right) and two
downward (for left) positions. These positions allow you
to signal a turn or a lane change.
To signal a turn, move the lever all the way up
or down. When the turn is finished, the lever will
return automatically.
An arrow on the instrument
panel will flash in the
direction of the turn
or lane change.
To signal a lane change, just raise or lower the lever
until the arrow starts to flash. Hold it there until you
complete your lane change. The lever will return by
itself when you release it.If you move the lever all the way up or down, and the
arrow flashes at twice the normal rate, a signal bulb
may be burned out and other drivers may not see
your turn signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows don't go on at all when you
signal a turn, check for burned
-out bulbs and a blown
fuse (see ªFuses and Circuit Breakersº in the Index).
Turn Signal On Chime
If your turn signal is left on for more than 3/4 of a
mile (1.2 km), a chime will sound at each flash of the
turn signal. To turn off the chime, move the turn signal
lever to the off position.

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4-62 Making Turns
NOTICE:
Making very sharp turns while trailering could
cause the trailer to come in contact with the
vehicle. Your vehicle could be damaged. Avoid
making very sharp turns while trailering.
When you're turning with a trailer, make wider turns than
normal. Do this so your trailer won't strike soft shoulders,
curbs, road signs, trees or other objects. Avoid jerky or
sudden maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
The arrows on your instrument panel will flash
whenever you signal a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling other
drivers you're about to turn, change lanes or stop.When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind you
are seeing your signal when they are not. It's important
to check occasionally to be sure the trailer bulbs are
still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
If you have an automatic transmission, you can tow in
DRIVE (D). You may want to shift the transmission to
THIRD (3) or, if necessary, a lower gear selection if the
transmission shifts too often (e.g., under heavy loads
and/or hilly conditions).
You may also want to activate the tow/haul mode if the
transmission shifts too often. See ªTow/Haul Modeº in
the Index.
If you have a manual transmission and you are towing a
trailer, it's better not to use FIFTH (5) gear. Just drive in
FOURTH (4) gear (or, as you need to, a lower gear).

6-
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6-1
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel (Gasoline Engine)
6
-5 Fuels in Foreign Countries (Gasoline Engines)
6
-6 Filling Your Tank (Gasoline Engine)
6
-8 Checking Things Under the Hood
6
-12 Engine Oil (Gasoline Engine)
6
-16 Engine Air Cleaner/Filter
6
-19 Automatic Transmission Fluid
6
-22 Manual Transmission Fluid
6
-24 Hydraulic Clutch
6
-25 Rear Axle
6
-25 Four-Wheel Drive
6
-28 Coolant Surge Tank Pressure Cap
(Gasoline Engine)
6
-28 Thermostat
6
-29 Engine Coolant
6
-32 Power Steering Fluid6
-33 Windshield Washer Fluid
6
-34 Brakes
6
-37 Battery
6
-38 Bulb Replacement
6
-44 Windshield Wiper Blade Replacement
6
-45 Tires
6
-54 Appearance Care
6
-54 Cleaning the Inside of Your Vehicle
6
-58 Cleaning the Outside of Your Vehicle
6
-62 GM Vehicle Care/Appearance Materials
6
-63 Vehicle Identification Number (VIN)
6
-64 Electrical System
6
-73 Replacement Bulbs
6
-74 Capacities and Specifications
6
-76 Air Conditioning Refrigerants
6
-77 Normal Maintenance Replacement Parts

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6-38 Vehicle Storage
If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
-) cable from
the battery. This will help keep your battery from
running down.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
-Deterrent
Featureº in the Index.
Bulb Replacement
For any bulb changing procedure not listed in this
section, contact your GM dealership service department.
Before you replace any bulbs, be sure that all the lamps
are off and the engine isn't running. See ªReplacement
Bulbsº in the Index for the proper types of bulbs to use.
Halogen Bulbs
CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.

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6-39 Headlamps
1. Remove the two pins on the top of the headlamp
assembly. To remove the pins, turn the outer pin
outward and pull it straight up. To remove the inner
pin, turn it inward and pull it straight up.
A. Low-Beam Headlamp
B. High
-Beam Headlamp
2. Pull the headlamp lens assembly out.
3. Unplug the electrical connector.
4. Turn the bulb counterclockwise and remove it from
the headlamp lens assembly.
5. Put the new bulb into the lens assembly and turn it
clockwise until it is tight.
6. Plug in the electrical connector.
7. Put the headlamp lens assembly back into the
vehicle. Install and tighten the two pins.

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6-40 Front Turn Signal, Sidemarker and
Daytime Running Lamps
A. Sidemarker Lamp
B. Retainer Clip
C. Front Turn Signal Lamp
D. Daytime Running Lamp1. Remove the headlamp lens assembly as
mentioned previously.
2. Press the retainer clip, located behind the turn signal
housing, towards the outside of the vehicle.
3. Pull the turn signal housing out from the vehicle.
4. Press the locking release lever, turn the bulb socket
counterclockwise and remove it from the turn signal
lens housing.
5. Remove the bulb from the bulb socket.
6. Put the new bulb into the bulb socket.
7. Put the bulb socket into the turn signal housing and
turn it clockwise until it locks.
8. Put the turn signal housing back onto the vehicle
placing the hook and posts on the inner side into the
alignment holes first and then the outer side into the
retainer bracket until you hear a click.
9. Put the headlamp lens assembly back into
the vehicle.

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6-41 Center High-Mounted Stoplamp (CHMSL)
and Cargo Lamp
1. Remove the screws and lift off the lamp assembly.A. Cargo Lamp
B. Center High
-Mounted Stoplamp
2. Remove the CHMSL bulb holder back plate from the
housing by pressing the release tabs.
3. The CHMSL bulb is removed by pulling the bulb
straight out from the holder back plate. The cargo
lamp is removed by turning the socket
counterclockwise and pulling the bulb straight out.

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6-42
4. If a CHMSL bulb is replaced, put the bulb into the
socket and press it in until it is tight.
5. If a cargo lamp is replaced, put a new cargo lamp
bulb into the socket and press it in until it is tight.
before turning the socket counterclockwise.
6. Put the holder back plate into the lamp housing
7. Replace the lamp assembly and tighten the screws.
Taillamps (Pickup Models)
1. Open the tailgate.
2. Remove the two rear lamp assembly screws near the
tailgate latch and pull out the lamp assembly.