PONTIAC GRAND PRIX 1999 Owners Manual

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2-81
Here are four things that some owners ask about. All
these things are normal and do not indicate that anything
is wrong with the fuel gage:

At the gas station, the pump shuts off before the gage
reads F (FULL).

It takes a more (or less) fuel to fill up than the gage
reads. For example, the gage reads half full, but it
took a more (or less) than half the tank's capacity to
fill it.

The gage pointer may move while cornering, braking
or speeding up.

The gage may not indicate E (EMPTY) when the
ignition is turned off.Low Fuel Light
If your fuel is low, the
warning light near the fuel
gage will go on.
It will also come on for a few seconds when you first
turn on the ignition as a check to show you it's working.
If it doesn't come on then, see your dealer.

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2-82
Head-Up Display (Option)
CAUTION:
If the HUD image is too bright, or too high in
your field of view, it may take you more time to
see things you need to see when it's dark outside.
Be sure to keep the HUD image dim and placed
low in your field of view.
If you have the Head-Up
Display (HUD), you can see
the speedometer reading (in
English or metric units) and
a brief display of the current
radio station or CD track,
displayed ªthroughº
the windshield.The HUD also shows these lights when they are lit on
the instrument panel:

Turn Signal Indicators

High
-Beam Indicator Symbol

Low Fuel Symbol
The HUD will display ªCHECK GAGEº when the
following items are lit on the instrument panel:

Oil Warning Symbol

Coolant Temperature Symbol

Charging System Symbol
When you sit straight in your seat, the HUD image will
appear straight ahead near the front bumper.

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2-83
When the ignition key is turned to RUN, the HUD
image will come on. Then the Head
-Up Display will
operate normally.
NOTICE:
Although the HUD image appears yo be near the
front of the vehicle, do not use it as a parking aid.
The HUD was not designed for that purpose. If
you try to use it that way, such as in a parking
lot, you may misjudge distance and run
into something.
When the HUD is on, the speedometer reading will be
displayed continually. The current radio station or CD
track number will only be displayed for three seconds
after the radio or CD track status changes. This will
happen whenever one of the radio controls is pressed,
either on the radio itself or on the optional steering
wheel controls.To adjust the HUD so you can see it properly:
1. Start your engine and turn the DIM dial to the
desired HUD image brightness.
2. Adjust your seat, if necessary, to a
comfortable position.
3. Press the top of the UP/DN switch until the HUD
image stops moving. Then press the bottom of the
switch until the image is as low as possible but in
full view.

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2-84
4. Turn the DIM dial down until the HUD image is no
brighter than necessary. To turn the HUD off, turn
the DIM dial all the way down.
If the sun comes out, it becomes cloudy, or if you turn
on your headlamps, you may need to adjust the HUD
brightness again. Polarized sunglasses could make the
HUD image harder to see.
Push the ENG/MET button
on the trip calculator to
switch the HUD display
from English to metric or
metric to English. If your
vehicle is not equipped with
the trip calculator, you can't
change the display.
Care of the Head-Up Display
Clean the inside of the windshield as needed to remove
any dirt or film that reduces the sharpness or clarity of
the HUD image.
To clean the HUD, spray household glass cleaner on a
soft, clean cloth. Wipe the HUD lens gently, then dry it.
Do not spray cleaner directly on the lens because the
cleaner could leak into the unit.

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If You Can't See the HUD Image When
the Ignition Is On

Is anything covering the HUD unit?

Is the HUD dimmer setting bright enough?

Is the HUD image adjusted to the proper height?

Still no HUD image? Check the fuse in the
instrument panel fuse block. See ªFuses and Circuit
Breakersº in the Index.
If the HUD Image Is Not Clear

Is the HUD image too bright?

Are the windshield and HUD lens clean?
The windshield is part of the HUD system. If you ever
have to have a new windshield, be sure to get one
designed for HUD. If you don't, the HUD image may
look blurred and out of focus.Power Drop Feature
The vehicle is equipped with auxiliary power leads.
These leads can be used to power aftermarket electrical
equipment added to the vehicle. They are located on the
passenger's side of the vehicle, below the glove box. For
additional information on accessing these leads and
electrical hookup, please refer to the service manual.

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Driver Information Center (DIC) (If Equipped)
The Driver Information Center (DIC) gives you important safety and maintenance facts. When you turn the ignition
on, all of the Driver Information Center lights light up for a few seconds. Then it goes to work.

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2-87 Functions
: If one of the doors is ajar, a light will appear
next to that door on the vehicle outline.
CHANGE OIL SOON: This light will appear when the
system predicts that the oil's remaining useful life is
almost up. The system predicts remaining oil life using
inputs from length of drives, coolant temperature,
engine rpm and vehicle speed. It alerts you to change
the oil on a schedule consistent with the vehicle's
driving conditions.
After changing the oil, the system must be reset. With
the ignition key in ON but the engine off, fully push and
release the accelerator pedal slowly three times within
five seconds. If the CHANGE OIL SOON light flashes,
the system is resetting. Turn the ignition key to OFF,
then start the vehicle. If the CHANGE OIL SOON light
comes back on, the Oil Life Monitor has not reset.
Repeat the procedure.LOW: This light will come on when the ignition is
on and the fluid container is low.
AJAR: This light alerts you that the trunk is not
fully closed.
LOW TRAC: This light will come on when the
Traction Control System is limiting wheel spin. See
ªTrac Systemº or ªLow Traction Lightº in the Index.
TRAC OFF: This light lets you know that the Traction
Control System has been disabled and will not limit
wheel spin. See ªEnhanced Traction System Warning
Lightº or ªLow Traction Lightº in the Index.
TRAC switch: If the vehicle has the Traction Control
System, you will have a disable switch on the far right
side of the Driver Information Center. The Traction
Control System is automatically activated when you turn
the ignition on. This switch will activate/deactivate the
Traction Control System. If you need to disable the
system, such as when you are stuck and are rocking the
vehicle back and forth, push this switch. See ªStuck: In
Sand, Mud, Ice or Snowº in the Index.

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Trip Computer (If Equipped)
3100 and 3800 Engines
When you start the engine, the trip computer will display a mode. A lighted oval will appear to the left of the mode
currently being used.

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2-89
3800 Supercharged Engine
When you start the engine, the trip computer will display a mode. A lighted oval will appear to the left of the mode
currently being used.

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2-90 Control Buttons
The trip computer has three buttons that control its
functions.
ENG/MET: Press this button to change the display from
English to metric units or metric to English.
RESET: Press this button for two seconds to reset the
mode displayed.
MODE: Press this button to change the mode
being displayed.
Functions
PERFORMANCE SHIFT: This light comes on when
you press the performance shift button (located on the
console shift) to indicate that the vehicle is in
performance shifting mode.
See ªPerformance Shiftingº in the Index.
FUEL USED: Shows the total amount of fuel used
since you last reset this mode. The amount can be
displayed in gallons or liters.AVG ECON: Shows the average fuel economy since
you last reset this mode.
OIL LIFE: Shows a percentage of the oil's remaining
useful life. The system predicts remaining oil life using
inputs from length of drives, coolant temperature,
engine rpm and vehicle speed. Each time you get an oil
change, be sure to reset this function so that it will give
you an accurate percentage. See ªHow to Reset the Oil
Life Monitorº in the Index.
RANGE: Shows how much farther you can travel with
the fuel you have before refueling. When the range
displays L
, for 40 to 50 miles (64.36 to 80.45 km), the
display will flash the word LOW continuously and the
vehicle will chime three times. The range is calculated
from the average econ value times the fuel remaining in
the tank.
LOW: This light will come on when the ignition is
on and the fluid container is low.