1999 CHEVROLET TAHOE headlamp

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2-21
NEUTRAL (N): Shift to this setting only when
your vehicle needs to be towed or when using a
power take
-off.
4
-Wheel Low (4L): This setting also engages your
front axle to give you extra power and also gives you a
higher driveline ratio. It should be used only for
off
-road driving.
You can shift from 2
-Wheel High (2H) to 4-Wheel
High (4H) or from 4
-Wheel High (4H) to 2-Wheel
High (2H) while the vehicle is moving. Your front axle
will engage faster if you take your foot off the
accelerator for a few seconds after you shift. In
extremely cold weather, it may be necessary to stop or
slow the vehicle to shift into 4
-Wheel High (4H).To shift into or out of 4
-Wheel Low (4L) or
NEUTRAL (N):
1. Slow the vehicle to a roll, about 1 to 3 mph
(2 to 5 km/h) and shift the transmission into
NEUTRAL (N).
2. Shift the transfer case shift lever in one
continuous motion.
Don't pause in NEUTRAL (N) as you shift the transfer
case into 4
-Wheel Low (4L), or your gears could clash.
Remember that driving in 4
-Wheel High (4H) or
4
-Wheel Low (4L) may reduce fuel economy. Also,
driving in four
-wheel drive on dry pavement could
cause your tires to wear faster and make your transfer
case harder to shift and run noisier.
When your headlamps or parking lamps are on, rotate the
thumbwheel next to the headlamp switch up to brighten or
down to dim your transfer case indicator light.

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2-34
Multifunction Lever
The lever on the left side of the steering column
includes your:

Turn Signal and Lane Change Indicator

Headlamp High/Low Beam Changer

Windshield Wipers

Windshield Washer

Cruise Control (If Equipped)
Turn Signal and Lane Change Indicator
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 ªFusesº in the Index).

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2-35 Headlamp High/Low-Beam Changer
To change the headlamps from low beam to high or high
to low, pull the turn signal lever all the way toward you.
Then release it.
When the high beams are
on, this light on the
instrument panel also will
be on.
Windshield Wipers
You control the windshield
wipers by turning the knob
with the wiper symbol on it.
For a single wiping cycle, turn the knob to MIST. Hold
it there until the wipers start, then let go. The wipers willstop after one cycle. If you want more cycles, hold the
knob on MIST longer.
You can set the wiper speed for a long or short delay
between wipes. This can be very useful in light rain or
snow. Turn the knob to choose the delay time. The
closer to LOW, the shorter the delay.
For steady wiping at low speed, turn the knob to the
LOW position. For high
-speed wiping, turn the knob
further, to HIGH. To stop the wipers, move the
knob to OFF.
Damaged wiper blades may prevent you from seeing
well enough to drive safely. To avoid damage, be sure to
clear ice and snow from the wiper blades before using
them. If they are frozen to the windshield, carefully
loosen or thaw them. If your blades do become
damaged, get new blades or blade inserts.
Heavy snow or ice can overload your wipers. The
windshield wiper motor is protected from overload by a
circuit breaker and a fuse. If the motor overheats due to
heavy snow, etc., the wiper will stop until the motor
cools. Although the circuit is protected from electrical
overload, overload due to heavy snow, etc. may cause
wiper linkage damage. Always clear ice and heavy
snow from the windshield before using your
windshield wipers.

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2-40
Exterior Lamps
Your parking and headlamp knob is on the driver's side
of your instrument panel.
Rotate the knob clockwise, to the parking lamp symbol,
to turn on the following:

Parking Lamps

Sidemarker Lamps
Clearance Lamps (If Equipped)

Taillamps

License Plate Lamps

Instrument Panel Lights
Rotate the knob clockwise again, to the master lighting
symbol, to turn on all the lamps listed as well as
the headlamps.
Rotate the knob counterclockwise, to OFF, to turn off
your lamps.
Rotate the thumbwheel next to the knob up to adjust
instrument panel lights. Rotate the thumbwheel up to the
first notch to return the radio display and gearshift
indicator LED display to full intensity when the
headlamps or parking lamps are on. To turn on the dome
lamps (with the vehicle doors closed) rotate the
thumbwheel up to the second notch position.
You can switch your headlamps from high to low beam
by pulling on the turn signal/high
-beam lever.
A circuit breaker protects your headlamps. If you have
an electrical overload, your headlamps will flicker on
and off. Have your headlamp wiring checked right away
if this happens.

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2-41 Headlamps-On Reminder
A buzzer will sound when your headlamps are turned on
and your ignition is in OFF, LOCK or ACCESSORY. If
you need to use your headlamps when the ignition
switch is in OFF, LOCK or ACCESSORY, the buzzer
can be turned off by turning the thumbwheel next to the
parking and headlamp switch all the way down.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
The DRL system will make your headlamps come on at
a reduced brightness when:

the ignition is on,

the headlamp switch is off and

the parking brake is released.
When the DRL are on, only your headlamps will be on.
The taillamps, sidemarker and other lamps won't be on.
Your instrument panel won't be lit up either.When it begins to get dark, your DRL indicator light
is a reminder to turn your headlamp switch on. The
other lamps that come on with your headlamps will also
come on.
When you turn the headlamp switch off, the regular
lamps will go off, and your headlamps will change to
the reduced brightness of DRL.
To idle your vehicle with the DRL off, set the parking
brake. The DRL will stay off until you release the
parking brake.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Interior Lamps
Instrument Panel Intensity Control
The instrument panel intensity control is located next to
the parking/headlamp switch. Rotate the thumbwheel up to
adjust the instrument panel lights. Rotate the thumbwheel
up to the first notch to return the radio display and gear
shift indicator LED display to full intensity when the
headlamps or parking lamps are on. To turn on the dome
lamps (with the vehicle doors closed) rotate the
thumbwheel up to the second notch position.

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2-42 Illuminated Entry
Your vehicle is equipped with an illuminated entry
feature.
When the doors are opened, the dome lamps will come
on if the dome lamp button is in the out position. When
all doors are closed or the dome lamp button is pressed
in, the lamps will stay on for a short period of time and
will then go out.
Dome Lamps
The dome lamps will come on when you open the doors.
You can also turn the dome lamps on by rotating the
thumbwheel, located next to the parking and headlamps
switch knob, all the way up to the second notch. In this
position, the dome lamps will remain on whether the
doors are opened or closed.
You can use the DOME OVERRIDE button, located
below the parking and headlamp knob, to set the dome
lamps to come on automatically when the doors are
opened, or remain off. To turn the lamps off, press the
switch button once. With the switch button in this
position, the dome lamps will remain off when the doors
are open. To return the lamps to automatic operation,
press the switch button again and return it to the ªoutº
position. With the button in this position, the dome
lamps will come on when you open the door.

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2-43 Reading Lamps
If your vehicle has reading
lamps, press the button
next to the lamp to turn the
lamp on.
The lamps can be adjusted
to point in the direction
you want.
Press the button again to
turn the lamp off.
If your vehicle has an overhead console with reading
lamps, press the button next to the lamp to turn the
lamp on.
The lamps can be adjusted to point in the direction
you want.
Press the button again to turn the lamp off.
Mirrors
Inside Day/Night Rearview Mirror
Pull the tab under the mirror to reduce glare from
headlamps behind you after dark. Push the tab forward
for normal daytime operation.
Electrochromic Inside Rearview Mirror
with Compass (If Equipped)
Your vehicle may have an electrochromic inside
rearview mirror.
When on, an electrochromic mirror automatically dims
to the proper level to minimize glare from lights behind
you after dark.

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2-81 Daytime Running Lamps (DRL)
Indicator Light
This light will go on
whenever the DRL are on.
When it begins to get dark, the DRL indicator light is a
reminder to turn on your headlamps.
Check Gages Light
This light will come on
briefly when you are
starting the engine.
If the light comes on and stays on while you are driving,
it could indicate a problem with your vehicle. It could bea problem with your oil pressure, coolant temperature,
or some other problem. Check your various gages to see
if they are in the warning zones. If they are, have your
vehicle serviced right away.
Headlamp High-Beam Indicator Light
The high-beam indicator is
on whenever you use your
high
-beam headlamps. For
more details about high
beams, see ªHeadlamp
High/Low
-Beam Changerº
earlier in this section.
Turn Signal and Lane Change
Indicator Lights
The signal indicator will
come on whenever you
signal a turn or lane change.
See ªTurn Signal and Lane
Change Indicatorº earlier in
this section.