O star BUICK ENCLAVE 2008 Service Manual

Headlamp High/Low-Beam Changer
To change the headlamps from low beam to high
beam, push the turn signal lever away from you.
To change from high beam to low beam, pull the
turn signal lever toward you.
While the high beams are
on, this light located on the
instrument panel cluster
will also be on.
Flash-to-Pass
This feature lets you use the high-beam headlamps to
signal the driver in front of you that you want to pass.
It works even if your headlamps are off.
Pull the turn signal lever toward you briey to
ash-to-pass.
If the headlamps are off or on low beam, the high-beam
headlamps will turn on. They will stay on as long as you
hold the lever toward you and the high-beam indicator on
the instrument panel cluster will come on.
Windshield Wipers
Turn the band with the wiper symbol on it to control the
windshield wipers.
8(Mist):For a single wiping cycle, hold it on mist
until the wipers start, then release. The wipers stop after
one wipe. For more wipe cycles, hold the band longer.
6(Delay):Use to set the delay time between wipe
cycles. The wiper speed can be set for a long or short
delay between wipes. The closer the band is set to
the top of the lever, the shorter the delay.
6(Low Speed):For steady wiping at low speed.
1(High Speed):For high-speed wiping.
9(Off):Turns the wipers off.
Clear ice and snow from the wiper blades before
using them. If the wipers are frozen to the windshield,
carefully loosen or thaw them. If they become worn
or damaged, replace with new blades or blade inserts.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools.
The vehicle has wiper-activated headlamps. After the
windshield wipers have completed eight wipe cycles
within four minutes, the headlamps automatically
turn on. SeeWiper Activated Headlamps on page 3-16
for more information.
3-9

Setting Cruise Control
Cruise control will not work if the parking brake is set, or
if the master cylinder brake uid level is low.
The cruise control light on the instrument panel cluster
comes on after the cruise control has been set to the
desired speed. SeeInstrument Panel Cluster on
page 3-33.
{CAUTION:
If you leave your cruise control on when you are
not using cruise, you might hit a button and go into
cruise when you do not want to. You could be
startled and even lose control. Keep the cruise
control switch off until you want to use cruise
control.
1. Press the
Tbutton.
2. Get up to the desired speed.
3. Press and release the SET– button located on the
steering wheel.
4. Take your foot off the accelerator.
Resuming a Set Speed
If cruise control is set at a desired speed and the
brakes are applied, this shuts off the cruise control.
However, it does not need to be reset.
Once your vehicle reaches a speed of about 25 mph
(40 km/h) or more, press the +RES button on the
steering wheel. The vehicle goes back to the previously
selected speed and stays there.
Increasing Speed While Using Cruise
Control
To increase the cruise speed while using cruise control:
Press and hold the +RES button on the steering
wheel until the desired speed is reached, then
release it.
To increase vehicle speed in small increments,
press the +RES button. Each time this is done,
the vehicle goes about 1 mph (1.6 km/h) faster.
3-13

Ashtray(s)
Notice:If papers, pins, or other ammable items
are put in the ashtray, hot cigarettes or other
smoking materials could ignite them and possibly
damage the vehicle. Never put ammable items
in the ashtray.
For vehicles without the oor console, pull the tray
located below the climate controls to reveal the ashtray.
The ashtray can be removed by pulling on the ledge
located at the top of the ashtray.
The vehicles with a full oor console do not have an
ashtray. There is a storage bin below the climate control
system. For more information, seeFront Storage Area on
page 2-57.
Climate Controls
Climate Control System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
For vehicles with the remote start feature and it is
activated, the climate control system heats or cools the
inside of the vehicle, with the settings used before the
vehicle was turned off. The heated seats, if the vehicle
has them, and the rear window defogger will be turned
on by the climate control system when it is cold outside.
The cooled seat setting is not activated during a remote
start. Normal operation of the system will return after
the key is turned to the ON/RUN position. SeeRemote
Keyless Entry (RKE) System Operation on page 2-5for
more information.
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6(Floor):Air is directed to the oor outlets, with
some air directed to the windshield and side window
outlets.
If recirculation is selected while in this mode, it stays on
for three minutes to reduce windshield fogging.
-(Floor/Defog):This clears the windows of fog
or moisture. Air is directed to the windshield and side
window outlets and to the oor outlets. The system
runs the air conditioning compressor unless the outside
temperature is near or below freezing.
0(Defrost):This mode clears the windshield of fog or
frost more quickly. Air is directed to the windshield and
side window outlets. The system runs the air conditioning
compressor unless the outside temperature is near or
below freezing.
#(Air Conditioning):Press to turn the air conditioning
system on or off. An indicator light below the button
comes on to show that this mode is on. Air conditioning
can be selected in any mode as long as the fan knob
is not in the off position.
On hot days during the vehicle’s initial start-up, open
the windows to let hot inside air escape; then close them.
This helps to reduce the time it takes for the vehicle to
cool down. It also helps the system to operate more
efficiently.For quicker cool down on hot days, do the following:
1. Select
H.
2. Select
h.
3. Select
#.
4. Select the coolest temperature.
5. Select the highest fan speed.
The air-conditioning system removes moisture from
the air, so a small amount of water might drip under
the vehicle while idling or after turning off the engine.
This is normal.
h(Recirculation):Press to turn the recirculation
mode on. An indicator light below the button comes on
to show that this mode is on. This mode recirculates and
helps to quickly cool the air inside the vehicle. It can be
used to prevent outside air and odors from entering the
vehicle. This mode cannot be selected while in the defog
or defrost modes. If you try to select the recirculation
mode, the indicator light ashes three times and turns off.
Operation in this mode during periods of high humidity
and cool outside temperatures may result in increased
window fogging. If window fogging is experienced, select
the defrost mode.
3-23

Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger):Press to turn the rear
window defogger on or off. An indicator light below the
button comes on to show that the rear window defogger is
on. Be sure to clear as much snow from the rear window
as possible.
The rear window defogger only works when the ignition is
in ON/RUN. The rear window defogger stays on for about
20 minutes after the button is pressed if traveling at slow
speeds. At higher vehicle speeds, the rear defogger may
stay on continuously. If turned on again, the defogger
only runs for about 10 minutes before turning off. The
defogger can be turned off by pressing the button again,
by turning the ignition to ACC/ACCESSORY or ON/RUN,
or by turning off the engine.
If the vehicle has heated outside rearview mirrors, the
mirrors heat to help clear fog or frost from the surface
of the mirror when the rear window defogger is on.
SeeOutside Heated Mirrors on page 2-37for more
information.Notice:Do not use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs would not be
covered by the vehicle warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.
Dual Automatic Climate Control
System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
For vehicles with the remote start feature and it is
activated, the climate control system heats or cools the
inside of the vehicle, with the settings used before the
vehicle was turned off. The heated seats, if the vehicle
has them, and the rear window defogger will be turned
on by the climate control system when it is cold outside.
The cooled seat setting is not activated during a remote
start. Normal operation of the system will return after
the key is turned to the ON/RUN position. SeeRemote
Keyless Entry (RKE) System Operation on page 2-5for
more information.
3-24

A. Driver and Passenger
Temperature Controls
B. Fan Control
C. Display
D. Air Delivery Mode
ControlE. Air Conditioning
F. Outside Air
G. Recirculation
H. PASS
I. Rear Window
Defogger
Automatic Operation
AUTO (Automatic Fan):When AUTO is selected on
the fan control, the system automatically adjusts the fan
speed. If the OnStar
®system is activated when this
position is selected, the fan speed will lower.
AUTO (Automatic Mode)
1. Turn the fan control to AUTO.
2. Turn the mode control to AUTO.
3. Adjust the temperature to a comfortable setting
between 68°F (21°C) and 78°F (26°C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool any
faster. In cold weather, the system starts at reduced
fan speeds to avoid blowing cold air into the vehicle
until warmer air is available. The system will start
out blowing air to the oor, but may change modes
automatically as the vehicle warms up to maintain
the chosen temperature setting. The length of time
needed to warm the interior depends on the outside
temperature.
4. Wait a few minutes for the system to automatically
regulate. Then adjust the temperature as necessary
to nd your comfort setting.
Do not cover the solar sensor located in the center of
the instrument panel, near the windshield. For more
information on the solar sensor, see “Sensors” later in
this section.
After the vehicle is started, the display shows the
interior temperature settings.
3-25

There is also an interior temperature sensor located
next to the steering wheel that measures the
temperature of the air inside the vehicle.
There is also an exterior temperature sensor located
behind the front grille. This sensor reads the outside air
temperature and helps maintain the temperature inside
the vehicle. Any cover on the front of the vehicle could
cause a false temperature reading to display.
In order to prevent false temperature readings at
startup, the displayed temperature will not change
until the following occurs:
Vehicle speed is above 10 mph (16 km/h) for
ve minutes.
Vehicle speed is above 32 mph (51 km/h) for
two and a half minutes.
The climate control system uses the information
from these sensors to maintain your comfort setting by
adjusting the outlet temperature, fan speed, and the air
delivery mode. The system may also supply cooler air to
the side of the vehicle facing the sun. The recirculation
mode will also be used as needed to maintain cool outlet
temperatures.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
<(Rear Defogger):Press to turn the rear window
defogger on or off. An indicator light below the button
comes on to show that the rear window defogger is on.
Be sure to clear as much snow from the rear window
as possible.
The rear window defogger only works when the ignition
is in ON/RUN. The rear window defogger stays on
for about 20 minutes after the button is pressed if the
vehicle is traveling at slower vehicle speeds. At higher
vehicle speeds the rear window defogger may stay on
continuously. If turned on again, the defogger only runs
for about 10 minutes before turning off. The defogger can
be turned off by pressing the button again, by turning the
ignition to ACC/ACCESSORY or ON/RUN, or by turning
off the engine.
The heated outside rearview mirrors will heat to help
clear fog or frost from the surface of the mirror when
the rear window defogger is on. SeeOutside Heated
Mirrors on page 2-37for more information.
Notice:Do not use a razor blade or sharp object to
clear the inside rear window. Do not adhere anything
to the defogger grid lines in the rear glass. These
actions may damage the rear defogger. Repairs
would not be covered by your warranty.
3-29

4. Insert the new air lter by pushing until you hear a
click. Reinstall the push pin and snap the cover
into place.
Warning Lights, Gages, and
Indicators
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to
the warning lights and gages could prevent injury.
Warning lights come on when there may be or is a
problem with one of the vehicle’s functions. Some
warning lights come on briey when the engine is
started to indicate they are working.
Gages can indicate when there may be or is a problem
with one of the vehicle’s functions. Often gages and
warning lights work together to indicate a problem with
the vehicle.
When one of the warning lights comes on and stays on
while driving, or when one of the gages shows there may
be a problem, check the section that explains what to do.
Follow this manual’s advice. Waiting to do repairs can be
costly and even dangerous.
3-32

Safety Belt Reminders
Driver Safety Belt Reminder Light
When the engine is started, a chime sounds for
several seconds to remind the driver to fasten the safety
belt, unless the driver safety belt is already buckled.
The driver safety belt light
comes on and stays on
for several seconds, then
ashes for several more.
This chime and light are repeated if the driver remains
unbuckled and the vehicle is in motion. If the driver’s
safety belt is already buckled, neither the chime nor
the light comes on.
Passenger Safety Belt Reminder Light
Several seconds after the engine is started,
a chime sounds for several seconds to remind the
front passenger to buckle their safety belt. This only
occurs if the passenger airbag is enabled. See
Passenger Sensing System on page 1-67for more
information. The passenger safety belt light, located
on the instrument panel, comes on and stays on for
several seconds and then ashes for several more.
This chime and light are
repeated if the passenger
remains unbuckled and
the vehicle is in motion.
If the passenger safety belt is buckled, neither the
chime nor the light comes on.
3-35

Airbag Readiness Light
The system checks the airbag’s electrical system for
possible malfunctions. If the light stays on it indicates
there is an electrical problem. The system check includes
the airbag sensor, the pretensioners, the airbag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the airbag system, seeAirbag
System on page 1-58.
The airbag readiness light
ashes for a few seconds
when the engine is started.
If the light does not come
on then, have it xed
immediately.{CAUTION:
If the airbag readiness light stays on after the
vehicle is started or comes on while driving, it
means the airbag system might not be working
properly. The airbags in the vehicle might not
inate in a crash, or they could even inate
without a crash. To help avoid injury, have
the vehicle serviced right away.
If there is a problem with the airbag system, an airbag
Driver Information Center (DIC) message can also come
on. SeeDIC Warnings and Messages on page 3-56
for more information.
3-36