light PONTIAC GRAND PRIX 2007 Repair Manual

Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 338. Poor fuel
quality will cause your engine not to run as
efficiently as designed. You may notice this as
stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have
or may begin programs to inspect the emission
control equipment on your vehicle. Failure to pass
this inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
check engine light is on or not working properly.
Your vehicle will not pass this inspection if
the OBD (on-board diagnostic) system determines
that critical emission control systems have not
been completely diagnosed by the system.
The vehicle would be considered not ready for
inspection. This can happen if you have recently
replaced your battery or if your battery has
run down. The diagnostic system is designed to
evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and
your vehicle still does not pass the inspection for
lack of OBD system readiness, your dealer
can prepare the vehicle for inspection.
183

Oil Pressure Light
If there is a problem
with the vehicle’s oil
pressure, this light may
stay on when the
engine is started.
It may also come on while the vehicle is being
driven. This indicates that the engine could be low
on oil or could have some other oil problem.
Have it xed right away.
The oil light could also come on in two other
situations:
When the ignition is on but the engine is not
running, the light will come on as a test to
indicate it is working. The light will go out when
the ignition is turned to RUN. If it does not come
on while the ignition is in the on position, there
may be a problem with the fuse or bulb. See
Fuses and Circuit Breakers on page 460.
If the brakes are applied quickly and the vehicle
makes a hard stop, the light may come on for a
moment. This is normal.
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others
could be burned. Check your oil as soon
as possible and have your vehicle
serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
184

Fog Lamp Light
This light will come on
when the fog lamps are
in use.
The light will go out when the fog lamps are
turned off. SeeFog Lamps on page 146for more
information.
Cruise Control Light
This light comes on
whenever you set your
cruise control.
The light will go out when the cruise control is
turned off. SeeCruise Control on page 140
for more information.
Highbeam On Light
This light comes on
whenever the
high-beam headlamps
are on.
See “Headlamp High/Low-Beam Changer” under
Exterior Lamps on page 144for additional
information.
Fuel Gage
The fuel gage shows
about how much fuel is
left in the fuel tank
when the ignition is on.
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When the indicator nears empty, there is still a
little fuel left, but you should get more soon.
Here are four things owners usually ask about the
fuel gage. All these situations are normal and
do not indicate a problem with the fuel gage:
At the gas station the pump shuts off before
the gage reads full.
It takes more or less fuel to ll up than the
gage indicates. For example, the gage
reads half full, but it took more or less than
half the tank’s capacity to ll it.
The gage pointer may move while cornering,
braking or speeding up.
The gage may not indicate full when the
ignition is turned off.
Driver Information Center (DIC)
The Driver Information Center (DIC) gives
important safety and maintenance facts. When the
vehicle’s ignition is turned on, all of the DIC
lights illuminate for a few seconds and an
introductory message will appear. After this, the
DIC will begin working.
DIC Controls and Displays
(Base Level DIC)
The Driver Information Center (DIC) control
buttons and the message display screen are
located above the radio. The DIC gives important
safety and maintenance facts concerning the
vehicle. The status of many of the vehicle’s
systems along with driver personal programming
mode menus and warning messages about
the vehicle’s systems may display on the DIC
screen.
The vehicle’s transaxle position will also appear.
The buttons on the base level are trip odometer,
set/reset, and options.
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AJAR
This symbol appears
with this message.
This message displays when a door or the trunk is
not closed properly. If your vehicle has the
remote start feature, this message also displays
when the hood is not closed properly. The graphic
highlights the hood or trunk if either one is not
closed properly. The graphic indicates a
highlighted, open door to show which door or
doors are not closed properly. Make sure that the
area indicated is closed completely.
This message displays while the ignition is in
RUN. A chime sounds for two seconds when the
ignition is shifted out of PARK (P). Press the
set/reset button to acknowledge this message and
to clear it from the screen.This message continues to display for
three seconds if it has not been acknowledged
when the engine is turned off. It also re-displays
for three 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.
BATTERY SAVER ACTIVE
This message displays when the system detects
that the battery voltage is dropping beyond a
reasonable level. The battery saver system starts
reducing certain features of the vehicle which
you may be able to notice. At the point that the
features are disabled, this message is displayed.
It means that the vehicle is trying to save the
charge in the battery. Turn off all unnecessary
accessories to allow the battery to recharge. The
normal battery voltage range is 11.5 to 15.5 volts.
If your vehicle has the uplevel DIC, you can
monitor battery voltage on the DIC by pressing the
gages button until BATTERY appears.
201

CHECK TIRE PRESSURE
This message displays when the tire pressure in
one of the tires needs to be checked. This
message also displays LEFT FRONT, RIGHT
FRONT, LEFT REAR, or RIGHT REAR to indicate
which tire needs to be checked. You can receive
more than one tire pressure message at a time.
To read the other messages that may have
been sent at the same time, press the set/reset
button. If a tire pressure message appears on the
DIC, stop as soon as you can. Have the tire
pressures checked and set to those shown on the
Tire Loading Information label. SeeTires on
page 400,Loading Your Vehicle on page 317, and
Ination - Tire Pressure on page 408. The DIC
display also shows the tire pressure values for the
front and rear tires by pressing the options
button. SeeDIC Controls and Displays (Base
Level DIC) on page 186orDIC Controls and
Displays (Uplevel DIC with Trip Computer)
on page 190. If the tire pressure is low, the low
tire pressure warning light comes on. SeeLow Tire
Pressure Warning Light on page 178for more
information.This message displays while the ignition is in
RUN. Press the set/reset button to acknowledge
this message and to clear it from the screen.
This message continues to display for
three seconds if it has not been acknowledged
when the engine is turned off. It also re-displays for
three 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.
CRUISE SET
This symbol comes on
with this message.
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This message and symbol display briey whenever
the cruise control is set. The cruise control light
on the instrument panel cluster also comes
on when cruise control is set. SeeCruise Control
Light on page 185. CRUISE SET also appears
briey in the Head-Up Display (HUD), if your
vehicle has this feature. This message displays
when the ignition is in RUN. SeeCruise Control on
page 140for more information.
This message does not need to be acknowledged.
DELAYED LOCKING
This message displays when the doors of the
vehicle are closed and the delayed locking feature
has been programmed through the DIC. See
“DELAYED LOCKING” underDIC Vehicle
Customization on page 226for more information.
This message displays when the ignition is in
OFF. A chime sounds for two seconds when this
message is displayed.
This message cannot be acknowledged.
HEADLAMPS SUGGESTED
This message displays when the amount of
available light outside the vehicle is low and the
exterior lamps control has been turned off. This
condition happens when the headlamps are turned
off at night or the Daytime Running Lamps (DRL)
are turned off during the day. This message informs
the driver that it has become dark enough outside
to require the headlamps to be turned on. When the
headlamps are turned on, this message clears from
the screen. SeeExterior Lamps on page 144and
Daytime Running Lamps (DRL) on page 145for
more information.
This message displays while the ignition is in
RUN. A chime sounds for two seconds when this
message is displayed. Press the set/reset
button to acknowledge this warning message and
to clear it from the screen.
This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three 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.
205

HOT COOLANT
Notice:If the HOT COOLANT warning message
appears on the DIC display, stop the vehicle as
soon as possible. Do not increase the engine
speed above normal idling speed. Severe
engine damage can result from driving a vehicle
with an overheated engine. SeeEngine
Overheating on page 364for more information.
This symbol comes on
with this message.
This message displays when the engine coolant
temperature is too hot. The engine coolant
temperature warning light also appears on the
instrument panel cluster. Also, the engine coolant
temperature gage will read in the red or hot area.
SeeEngine Coolant Temperature Warning Light on
page 179andEngine Coolant Temperature Gage
on page 180for more information.To avoid added strain, turn off the air conditioner if it
is on. When the coolant temperature returns to
normal, the air conditioner can be turned back on.
This message displays only while the ignition is in
RUN. A chime sounds continuously when this
message is displayed. Press the set/reset button
to acknowledge this message and to clear it
from the screen.
This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three 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.
206

LOW BRAKE FLUID
This symbol comes on
with this message.
This message displays when the brake uid level
is low. Have the brake system serviced by
your dealer as soon as possible. SeeBrakes on
page 378.
The brake system warning light also appears on
the instrument panel cluster when this message
appears on the DIC. SeeBrake System Warning
Light on page 176.This message displays only while the ignition is in
RUN. A chime sounds for two seconds while
this message is displayed. Press the set/reset
button to acknowledge this message and to clear
it from the screen.
This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition exists, the message re-appears
when the engine is turned on.
210

This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three 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.
LOW OIL PRESSURE
Notice:If the LOW OIL PRESSURE warning
message appears on the DIC display, stop the
vehicle immediately. Do not drive the vehicle
until the cause of the low oil pressure is
corrected. Severe engine damage can result
from driving a vehicle with low oil pressure. See
Engine Oil on page 350for more information.
This symbol comes on
with this message.This message displays when the vehicle’s engine
oil pressure is low. The low oil pressure warning
light also appears on the instrument panel cluster.
SeeOil Pressure Light on page 184.
Stop the vehicle immediately, as engine damage
can result from driving a vehicle with low oil
pressure. Have the vehicle serviced by your dealer
as soon as possible when this warning message
is displayed.
This message displays only while the ignition is in
RUN. A chime sounds continuously when this
message is displayed. Press the set/reset button
to acknowledge this message and to clear it
from the screen.
This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three 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.
212