Page 1 of 444

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-10
Child Restraints
.......................................1-29
Airbag System
.........................................1-48
Restraint System Check
............................1-57
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
......................................2-10
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-21
Mirrors
....................................................2-35
OnStar
®System
......................................2-36
Storage Areas
.........................................2-38
Sunroof
..................................................2-41
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-26
Warning Lights, Gages, and Indicators
........3-35
Driver Information Center (DIC)
..................3-49
Audio System(s)
.......................................3-92Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-38
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Headlamp Aiming
.....................................5-48
Bulb Replacement
....................................5-50
Windshield Wiper Blade Replacement
.........5-57
Tires
......................................................5-58
Appearance Care
.....................................5-94
Vehicle Identi cation
...............................5-102
Electrical System
....................................5-103
Capacities and Speci cations
...................5-108
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-12
Index................................................................ 1
2005 Pontiac Grand Prix Owner ManualM
Page 8 of 444
Front Seats
Manual Seats
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
Lift the bar located under the front seat cushion to
unlock the seat. Slide the seat to the desired position
and release the bar. Try to move the seat back and forth
to make sure it is locked in place.
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Page 10 of 444

Heated Seats
If the vehicle has this
feature, the buttons to
activate the heat on each
front seat cushion are
located on the climate
control panel.
The button for the driver’s seat is located on the bottom
left side of the climate control panel. The button for
the passenger’s seat is on the bottom right of the climate
control panel.
Push the button once to activate a high heat setting.
Both indicator lights next to the button will come
on. Push the button again to select a lower temperature
setting. Only the bottom indicator light will come on.
Press the button a third time to turn the heat off.
This feature only works when the ignition is turned on.
Reclining Seatbacks
The recliner levers for the driver’s and passenger’s front
seatbacks are located on the outboard side of each
front seat cushion.
Lift the lever to release the seatback, then move the
seatback to the desired position. Release the lever
to lock the seatback in place. Pull up on the lever
without pushing on the seatback, and the seatback will
return to an upright position.
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Page 13 of 444
{CAUTION:
Things you put on this seatback can strike
and injure people in a sudden stop or turn,
or in a crash. Remove or secure all items
before driving.
If the vehicle has this feature, the front passenger seat
can be folded at for more cargo space. Used with
the split folding rear seat, additional cargo space
is gained. SeeSplit Folding Rear Seat on page 1-8.
To fold the front passenger seat at, pull up on the lever
located in the middle of the seatback. Lift up on the
seatback and push it forward to lock it in place.
To unlock the seat and return it to the normal seating
position, pull the lever in the middle of the seatback
and raise the seatback.
Push and pull on the seatback to make sure it is locked.
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Page 14 of 444
Rear Seats
Split Folding Rear Seat
Both sides of the rear seatback can be folded down in
the vehicle. Make sure the front seat is not reclined.
If it is, the rear seatback may not fold down all the way.
To lower the rear seatback, follow these steps:
1. Disconnect the rear center lap-shoulder belt latch
by using a pointed object to press the release
button.2. Pull forward on the
seatback tab located
on the outboard
side of the rear seat
cushion to fold
the seatback down.
This gives direct access to the trunk.
{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it
is locked.
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Page 15 of 444
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
To raise the rear seatback, follow these steps:
1. Raise the seatback up and make sure it latches.
Push and pull on the seatback to be sure it is
locked in position.2. Reconnect the center
safety belt latch plate
to the buckle.
Make sure the safety belt label is pointing to the
release button, and that both are facing the front of
the vehicle. Make sure the belt is not twisted. Push
and pull on the latch plate to be sure it is secure.
When the seat is not in use, the seatback should be
kept in the upright, locked position.
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Page 22 of 444

How to Wear Safety Belts Properly
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, seeOlder Children on page 1-29
orInfants and Young Children on page 1-32. Follow
those rules for everyone’s protection.
First, you will want to know which restraint systems your
vehicle has.
We will start with the driver position.
Driver Position
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here is how to
wear it properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight.
To see how, see “Seats” in the Index.3. Pick up the latch plate and pull the belt across you.
Do not let it get twisted.
The shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let the belt
go back slightly to unlock it. Then pull the belt
across you more slowly.
4. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is secure.
If the belt is not long enough, seeSafety Belt
Extender on page 1-28.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
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Page 23 of 444
5. To make the lap part tight, pull down on the buckle
end of the belt as you pull up on the shoulder belt.
6. This safety belt has a feature that will reduce the
tension of the safety belt on the occupant’s
shoulder. To set this feature, gently pull on the belt,
or lean forward and then sit back. The belt will
retract and rest lightly against the occupant.The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this applies
force to the strong pelvic bones. And you would be less
likely to slide under the lap belt. If you slid under it, the
belt would apply force at your abdomen. This could cause
serious or even fatal injuries. The shoulder belt should go
over the shoulder and across the chest. These parts of
the body are best able to take belt restraining forces.
The safety belt locks if there is a sudden stop or crash,
or if you pull the belt very quickly out of the retractor.
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