engine BUICK LACROSSE 2007 Repair Manual

SERVICE TIRE MONITOR SYSTEM
This message displays if a part on the Tire
Pressure Monitor (TPM) system is not working
properly. If you drive your vehicle while any of the
four sensors are missing or inoperable, the
warning comes on in about 10 minutes. A sensor
would be missing, for example, if you put
different wheels on your vehicle without
transferring the sensors. If the warning comes on
and stays on, there may be a problem with the
TPM. See your dealer.
This message displays while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
SERVICE TRACTION SYSTEM
If your vehicle has the Traction Control
System (TCS), this message displays when the
system is not functioning properly. A warning light
also appears on the instrument panel cluster.
SeeTraction Control System (TCS) Warning Light
on page 187. SeeTraction Control System
(TCS) on page 294for more information. Have the
TCS serviced by your dealer as soon as possible.
This message displays only while the ignition is in
RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
225

SERVICE VARIABLE EFFORT
STEERING
If your vehicle has variable effort steering, this
message displays when if this system is not
functioning properly. SeeSteering on page 297for
more information. Have the system serviced by
your dealer as soon as possible.
This message displays only while the ignition is in
RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
SERVICE VEHICLE SOON
This message displays when a non-emissions
related malfunction occurs. Have the vehicle
serviced by your dealer as soon as possible.This message displays only while the ignition is in
RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
STABILITY CONTROL ACTIVE
If your vehicle has StabiliTrak®, this message
displays when StabiliTrak®is actively assisting you
with directional control of the vehicle. Slippery
road conditions may exist when this message is
displayed, so adjust your driving accordingly.
SeeStabiliTrak
®System on page 296.
This message displays only while the ignition is in
RUN. This message stays on until road conditions
change and StabiliTrak
®is not active.
This message cannot be acknowledged and
cleared from the screen.
226

STABILITY CONTROL OFF
If your vehicle has StabiliTrak®, this message
displays any time the system turns off. When this
message has been displayed, StabiliTrak
®is
no longer available to assist you with directional
control of the vehicle. Adjust your driving
accordingly. SeeStabiliTrak
®System on page 296.
This message displays only while the ignition is
in RUN.
Any of the following conditions may cause the
StabiliTrak
®system to turn off:
The battery is low.
There is a StabiliTrak®system failure. See
your dealer for service.
STARTING DISABLED
This message displays if the starting of the engine
is disabled due to the electronic throttle control
system or vehicle theft-deterrent system. Have your
vehicle serviced by your dealer immediately.This message only appears while the ignition is in
RUN and will not disappear until the problem is
resolved.
This message cannot be acknowledged.
TRACTION CONTROL ACTIVE
If your vehicle has the Traction Control
System (TCS), this message displays when
the system is on. Slippery road conditions may
exist if this message is displayed, so adjust
your driving accordingly. SeeTraction Control
System (TCS) on page 294for more information.
This message only displays while the ignition
is in RUN and will not disappear until driving
conditions change and the TCS is no longer active.
This message cannot be acknowledged or
cleared from the screen.
227

TRACTION CONTROL OFF
If your vehicle has the Traction Control
System (TCS), this message displays when the
TCS turns off. SeeTraction Control System (TCS)
on page 294for more information.
This message only displays while the ignition is in
RUN and disappears after two seconds.
Any of the following conditions may cause the
TCS to turn off:
The TCS is turned off by pressing the traction
control button located on the center of the
instrument panel. SeeTraction Control
System (TCS) on page 294.
The battery is low.
There is a TCS failure. See your dealer for
service.
TRUNK AJAR
This message displays when the trunk is not
closed completely. Make sure that the trunk is
closed completely. SeeTrunk on page 100.This message displays while the ignition is in
RUN. A chime sounds when the ignition is shifted
out of PARK (P). Press any of the DIC buttons
to acknowledge this message and to clear it from
the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
TURN SIGNAL ON
This message displays as a reminder to turn off
the turn signal if you drive your vehicle for
more than about 0.75 mile (1.2 km) with a turn
signal on. SeeTurn Signal/Multifunction Lever on
page 152.
This message displays and a chime sounds only
when the ignition is in RUN. This message
clears from the DIC if the turn signal is manually
turned off, a turn is completed, or the message
is acknowledged.
228

FOB LOCK FEEDBACK
This feature allows you to select the type of
feedback you will receive when locking the vehicle
with the remote keyless entry transmitter.
Press the option button until FOB LOCK
FEEDBACK appears on the DIC display. Press
the set/reset button to scroll through the following
choices:
OFF:There will be no feedback when locking the
vehicle.
LIGHTS:The exterior lamps will ash when you
press the lock button on the remote keyless
entry transmitter.
LIGHTS and HORN (default):The exterior lamps
will ash when you press the lock button on the
remote keyless entry transmitter, and the horn will
sound when the lock button is pressed again
within ve seconds of the previous command.
Select one of the available choices and press the
option button while it is displayed on the DIC
to select it and move on to the next feature.
REMOTE START
If your vehicle has remote start, this feature allows
the remote start to be turned off or on. The
remote start feature allows you to start the engine
from outside of the vehicle using your remote
keyless entry transmitter. See “Remote Vehicle
Start” underRemote Keyless Entry (RKE) System
Operation on page 90for more information.
Press the option button until REMOTE START
appears on the DIC display. Press the set/reset
button to scroll through the following choices:
OFF:The remote start feature will be disabled.
ON (default):The remote start feature will
be enabled.
Select one of the available choices and press the
option button while it is displayed on the DIC
to select it and move on to the next feature.
234

While your vehicle is parked:
Familiarize yourself with all of its controls.
Familiarize yourself with its operation.
Set up your audio system by presetting your
favorite radio stations, setting the tone, and
adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
radio stations using the presets and steering
wheel controls if the vehicle has them.
Notice:Before adding any sound equipment
to your vehicle, such as an audio system,
CD player, CB radio, mobile telephone,
or two-way radio, make sure that it can be
added by checking with your dealer. Also,
check federal rules covering mobile radio and
telephone units. If sound equipment can be
added, it is very important to do it properly.
Added sound equipment may interfere with the
operation of your vehicle’s engine, radio, or
other systems, and even damage them.
Your vehicle’s systems may interfere with the
operation of sound equipment that has
been added.Notice:The chime signals related to safety
belts, parking brake, and other functions of
your vehicle operate through the radio/
entertainment system. If that equipment is
replaced or additional equipment is added to
your vehicle, the chimes may not work. Make
sure that replacement or additional equipment
is compatible with your vehicle before installing
it. SeeAccessories and Modifications on
page 341.
Your vehicle has a feature called Retained
Accessory Power (RAP). With RAP, the audio
system can be played even after the ignition is
turned off. SeeRetained Accessory Power (RAP)
on page 110for more information.
Setting the Time
Press and hold H until the correct hour appears on
the display. AM or PM will appear on the display
(Radio with CD (UpLevel, MP3, and Six-Disc CD)).
Press and hold M until the correct minute
appears on the display. The time can be set with
the ignition on or off.
239

If you keep pace with the traffic and allow realistic
following distances, you will eliminate a lot of
unnecessary braking. That means better braking
and longer brake life.
If your vehicle’s engine ever stops while you are
driving, brake normally but do not pump the
brakes. If you do, the pedal may get harder to
push down. If the engine stops, you will still have
some power brake assist. But you will use it
when you brake. Once the power assist is used
up, it may take longer to stop and the brake pedal
will be harder to push.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 341.Anti-Lock Brake System (ABS)
Your vehicle may have the Anti-Lock Brake
System (ABS), an advanced electronic braking
system that will help prevent a braking skid.
If your vehicle has ABS,
this warning light on the
instrument panel will
come on briey
when you start your
vehicle.
When you start your engine, or when you begin to
drive away, your ABS will check itself. You may
hear a momentary motor or clicking noise
while this test is going on, and you may even
notice that your brake pedal moves or pulses a
little. This is normal.
291

Traction Control System (TCS)
Your vehicle may have a Traction Control System
(TCS) that limits wheel spin. This is especially
useful in slippery road conditions. The system
operates only if it senses that one or both of the
front wheels are spinning or beginning to lose
traction. When this happens, the system works the
front brakes and reduces engine power to limit
wheel spin. It may also upshift the transaxle to limit
wheel spin. You may feel or hear the system
working, but this is normal.
The TRACTION CONTROL ACTIVE message on
the Driver Information Center (DIC) will be
displayed when the system is limiting wheel spin.
If the vehicle is in cruise control when the TCS
begins to limit wheel spin, the cruise control will
automatically disengage. When road conditions
allow safe use of the cruise control, it can be used
again. SeeCruise Control on page 154.The TCS operates in all transaxle shift lever
positions. But the system can upshift the transaxle
only as high as the shift lever position that was
chosen, so use the lower gears only when
necessary. SeeAutomatic Transaxle Operation
on page 114.
This light, along with the
TRACTION CONTROL
OFF message, will
display on the DIC for
three seconds when the
TCS is not on.
If there is a problem with the system, the
SERVICE TRACTION SYSTEM message will also
come on in the DIC. When this warning light is
on, the system will not limit wheel spin. Adjust
driving accordingly.
294

To limit wheel spin, especially in slippery road
conditions, you should always leave the TCS on.
But you can turn the system off if you ever
need to. The TCS should be turned off if the
vehicle ever gets stuck in sand, mud or snow and
rocking the vehicle is required. SeeRocking
Your Vehicle to Get It Out on page 319andIf Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 318.
To turn the TCS on or off, press the TCS button
located above the radio.
When the TCS is turned off, the TCS warning light
will come on along with the TRACTION CONTROL
OFF message on the DIC. It will disappear when
the TCS is turned back on. If the TCS is limiting
wheel spin when the TCS button is pressed, the
TCS warning light will come on and the TCS will
turn off right away.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 341for more information.Enhanced Traction System (ETS)
Your vehicle may have an Enhanced Traction
System (ETS) that limits wheel spin. This is
especially useful in slippery road conditions. The
system operates only if it senses that one or
both of the front wheels are spinning or beginning
to lose traction. When this happens, the system
reduces engine power and may also upshift
the transaxle to limit wheel spin. You may feel or
hear the system working, but this is normal.
The TRACTION CONTROL ACTIVE message on
the Driver Information Center (DIC) will be
displayed when the system is limiting wheel spin.
If the vehicle is in cruise control when ETS
begins to limit wheel spin, the cruise control will
automatically disengage. When road conditions
allow safe use of it, the cruise control can be used
again. SeeCruise Control on page 154.
295

When the system activates, a STABILITY
CONTROL ACTIVE message will be displayed on
the Driver Information Center (DIC). SeeDIC
Warnings and Messages on page 208. You may
also hear a noise or feel vibration in the brake
pedal. This is normal. Continue to steer the vehicle
in the direction you want it to go.
If there is a problem detected with StabiliTrak
®,a
SERVICE STABILITY SYSTEM or STABILITY
CONTROL OFF message will be displayed on the
Driver Information Center (DIC). A warning light
will also appear on the instrument panel cluster.
SeeDIC Warnings and Messages on page 208.
When this message is displayed, the system is not
operational. Driving should be adjusted
accordingly.
If your vehicle is in cruise control when the
StabiliTrak
®activates, the cruise control will
automatically disengage. When road conditions
allow you to safely use it again, you may reengage
the cruise control. SeeCruise Control on
page 154for more information.
Steering
Power Steering
If you lose power steering assist because the
engine stops or the system is not functioning, you
can steer but it will take much more effort.
Steering Tips
It is important to take curves at a reasonable
speed.
A lot of the “driver lost control” accidents mentioned
on the news happen on curves. Here is why:
Experienced driver or beginner, each of us is
subject to the same laws of physics when driving on
curves. The traction of the tires against the road
surface makes it possible for the vehicle to change
its path when you turn the front wheels. If there is
no traction, inertia will keep the vehicle going in the
same direction. If you have ever tried to steer a
vehicle on wet ice, you will understand this.
297