engine PONTIAC GRAND PRIX 1999 User Guide

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Automatic Transaxle Operation
The automatic transaxle may have a shift lever on the
steering column or on the console between the seats.
Maximum engine speed is limited on automatic
transaxle vehicles when you're in PARK (P) or
NEUTRAL (N), to protect driveline components from
improper operation.
There are several different positions for the shift lever.PARK (P): This locks the front wheels. It's the best
position to use when you start the engine because the
vehicle can't move easily.
CAUTION:
It is dangerous to get out of your vehicle if the
shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
See ªShifting Into PARK (P)º in the Index. If
you're pulling a trailer, see ªTowing a Trailerº in
the Index.

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Make sure the shift lever is fully in PARK (P) before
starting the engine. The vehicle has a Brake
-Transaxle
Shift Interlock (BTSI). You must fully apply the regular
brakes before you can shift from PARK (P) when the
ignition is in RUN. If you cannot shift out of PARK (P),
ease pressure on the shift lever by pushing it all the way
into PARK (P) while keeping the brake pedal pushed
down. Release the shift lever button if you have a
console shift. Then move the shift lever out of
PARK (P), being sure to press the shift lever button if
you have a console shift. See ªShifting Out of
PARK (P)º in the Index.
REVERSE (R): Use this gear to back up.
NOTICE:
Shifting to REVERSE (R) while the vehicle is
moving forward could damage the transaxle.
Shift to REVERSE (R) only after the vehicle
is stopped.
To rock the vehicle back and forth to get out of snow,
ice or sand without damaging the transaxle, see ªStuck:
In Sand, Mud, Ice or Snowº in the Index.NEUTRAL (N): In this position, the engine doesn't
connect with the wheels. To restart when you're already
moving, use NEUTRAL (N) only. Also, use
NEUTRAL (N) when the vehicle is being towed.
CAUTION:
Shifting out of PARK (P) or NEUTRAL (N) while
your engine is ªracingº (running at high speed) is
dangerous. Unless your foot is firmly on the
brake pedal, your vehicle could move very
rapidly. You could lose control and hit people or
objects. Don't shift out of PARK (P) or
NEUTRAL (N) while your engine is racing.
NOTICE:
Damage to your transaxle caused by shifting out
of PARK (P) or NEUTRAL (N) with the engine
racing isn't covered by your warranty.

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DRIVE (D): This position is for normal driving. If you
need more power for passing, and you're:

Going less than 35 mph (55 km/h), push the
accelerator pedal about halfway down.

Going about 35 mph (55 km/h) or more, push the
accelerator pedal all the way down.
You'll shift down to the next gear and have more power.
NOTICE:
If the vehicle seems to start up rather slowly, or if it
seems not to shift gears as you go faster, something
may be wrong with a transaxle system sensor. If
you drive very far that way, the vehicle can be
damaged. So, if this happens, have the vehicle
serviced right away. Until then, you can use
SECOND (2) when you are driving less than
35 mph (55 km/h) and DRIVE (D) for
higher speeds.
THIRD (3): This position is also used for normal
driving, but it offers more power and lower fuel
economy than DRIVE (D).Here are some times you might choose THIRD (3)
instead of DRIVE (D):

When driving on hilly, winding roads.

When towing a trailer, so there is less shifting
between gears.

When going down a steep hill.
SECOND (2): This position gives you more power, but
lower fuel economy than THIRD (3). You can use
SECOND (2) on hills. It can help control your speed as
you go down steep mountain roads, but then you would
also want to use the brakes off and on.
NOTICE:
Don't drive in SECOND (2) for more than
25 miles (40 km) at speeds over 55 mph
(88 km/h), or you can damage the transaxle. Use
DRIVE (D) or THIRD (3) as much as possible.
Don't shift into SECOND (2) unless you are going
slower than 65 mph (105 km/h), or you can
damage the engine.

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FIRST (1): This position gives you even more power,
but lower fuel economy than SECOND (2). You can use
it on very steep hills, or in deep snow or mud. If the shift
lever is put in FIRST (1), the transaxle won't shift into
first gear until the vehicle is going slowly enough.
NOTICE:
If the front wheels can't rotate, don't try to drive.
This might happen if you were stuck in very deep
sand or mud or were up against a solid object.
You could damage the transaxle.
Also, if you stop when going uphill, don't hold the
vehicle there with only the accelerator pedal. This
could overheat and damage the transaxle. Use the
brakes or shift into PARK (P) to hold the vehicle
in position on a hill.
Performance Shifting (If Equipped)
Press the performance shift
button, located on the side
of the console shift lever, to
allow the transaxle to shift
at higher engine speeds,
increasing firmness and
acceleration performance.
If you have a vehicle with the 3800 Supercharged
engine option, the PERFORMANCE SHIFT message in
the driver information center will come on.
Downshifts will occur at a lower percentage of
accelerator use while you're in the performance
shift mode.
Press the button again to return to normal shifting. The
transaxle will then shift at lower engine speeds,
increasing fuel economy.

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Shifting Into PARK (P)
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll. If
you have left the engine running, the vehicle can
move suddenly. You or others could be injured.
To be sure your vehicle won't move, even when
you're on fairly level ground, use the steps that
follow. If you're pulling a trailer, see ªTowing a
Trailerº in the Index.
Column Shift
1. Hold the brake pedal down with your right foot and
set the parking brake.
2. Move the shift lever into PARK (P) position l
ike this:

Pull the lever toward you.

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3. Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you can
leave the vehicle with the ignition key in your hand,
the vehicle is in PARK (P).
Leaving Your Vehicle With the
Engine Running
CAUTION:
It can be dangerous to leave your vehicle with the
engine running. Your vehicle could move
suddenly if the shift lever is not fully in PARK (P)
with the parking brake firmly set. And, if you
leave the vehicle with the engine running, it could
overheat and even catch fire. You or others could
be injured. Don't leave your vehicle with the
engine running unless you have to.
If you have to leave the vehicle with the engine running,
be sure the vehicle is in PARK (P) and the parking brake
is firmly set before you leave it. After you've moved the
shift lever into PARK (P) position, hold the regular
brake pedal down. Then, see if you can move the shift
lever away from PARK (P) without first pulling it
toward you (or, if you have a console shift lever, without
first pushing the button). If you can, it means that the
shift lever wasn't fully locked into PARK (P).
Torque Lock
If you are parking on a hill and you don't shift your
transaxle into PARK (P) properly, the weight of the
vehicle may put too much force on the parking pawl in
the transaxle. You may find it difficult to pull the shift
lever out of PARK (P). This is called ªtorque lock.º To
prevent torque lock, set the parking brake and then shift
into PARK (P) properly before you leave the driver's
seat. To find out how, see ªShifting Into PARK (P)º in
the Index.
When you are ready to drive, move the shift lever out of
PARK (P) before you release the parking brake.
If torque lock does occur, you may need to have another
vehicle push yours a little uphill to take some of the
pressure from the parking pawl in the transaxle, so you
can pull the shift lever out of PARK (P).

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Shifting Out of PARK (P)
CAUTION:
Before shifting out of PARK (P) you must fully
apply your regular brakes. Your vehicle can roll.
If you have left the engine running, the vehicle
can move suddenly. You or others could be
injured. If you're pulling a trailer, see ªTowing a
Trailerº in the Index.
Your vehicle has a Brake-Transaxle Shift Interlock
(BTSI). You must fully apply your regular brakes before
you can shift from PARK (P) when the ignition is in
RUN. See ªAutomatic Transaxle Operationº in
the Index.
If you cannot shift out of PARK (P), ease pressure on
the shift lever by pushing it all the way into PARK (P)
while keeping the brake pedal pushed down. Release the
shift lever button if you have a console shift. Then move
the shift lever out of PARK (P), being sure to press the
shift lever button if you have a console shift.If you ever hold the brake pedal down but still can't
shift out of PARK (P) with column shift, try this:
1. Turn the ignition key to OFF.
2. Apply and hold the brake until the end of Step 4.
3. Shift to NEUTRAL (N).
4. Start the engine and shift to the drive gear you want.
5. Have the vehicle fixed as soon as you can.
For vehicles equipped with the console shift lever, see
ªShift Lock Releaseº in the Index.
Shift Lock Release
This vehicle is equipped with an electric Shift Lock
Release system. The shift lock release is designed to:

Prevent ignition key removal unless the shift lever is
in PARK (P) (with the shift knob button fully
released if console shift), and

prevent movement of the shift lever out of PARK (P)
unless the ignition is in a position other than OFF or
LOCK. The shift lock release is always functional
except in the case of a dead or low voltage
(less than 9 V) battery.
If your vehicle has a dead battery or a battery with low
voltage, there are two override access slots that will
allow you to override the shift lock release.

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Parking Over Things That Burn
CAUTION:
Things that can burn could touch hot exhaust
parts under your vehicle and ignite. Don't park
over papers, leaves, dry grass or other things that
can burn.
Engine Exhaust
CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you can't see or
smell. It can cause unconsciousness and death.
You might have exhaust coming in if:

Your exhaust system sounds strange
or different.

Your vehicle gets rusty underneath.

Your vehicle was damaged in a collision.

Your vehicle was damaged when driving
over high points on the road or over
road debris.

Repairs weren't done correctly.

Your vehicle or exhaust system had been
modified improperly.
If you ever suspect exhaust is coming into
your vehicle:

Drive it only with all the windows down to
blow out any CO; and

Have your vehicle fixed immediately.

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Running Your Engine While
You're Parked
It's better not to park with the engine running. But if you
ever have to, here are some things to know.
CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle (see the earlier Caution under
ªEngine Exhaustº).
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan switch is at the highest setting. One place
this can happen is a garage. Exhaust
-- with
CO
-- can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be a blizzard.
(See ªBlizzardº in the Index.)
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you've left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
Follow the proper steps to be sure your vehicle won't
move. See ªShifting Into PARK (P)º in the Index.
If you are parking on a hill and if you're pulling a
trailer, also see ªTowing a Trailerº in the Index.

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With cruise control, you can maintain a speed of about
25 mph (40 km/h) or more without keeping your foot on the
accelerator. This can really help on long trips. Cruise control
does not work at speeds below about 25 mph (40 km/h).
When you apply the brakes, the cruise control shuts off.
CAUTION:

Cruise control can be dangerous where you
can't drive safely at a steady speed. So,
don't use your cruise control on winding
roads or in heavy traffic.

Cruise control can be dangerous on
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control. Don't
use cruise control on slippery roads.
If your vehicle is in cruise control when the traction
control system on the 3800 Supercharged V6 engine, or
the enhanced traction system on the 3100 V6 and
3800 V6 engine begins to limit wheel spin, the cruise
control will automatically disengage. (See ªTraction
Control Systemº or ªEnhanced Traction Systemº in the
Index.) When road conditions allow you to safely use it
again, you may turn the cruise control back on.