
The 2003 Pontiac  Grand  Prix  Owner  Manual a 
Seats  and  Restpaint  Systems ........................... ? -1 
Front  Seats ............................................... 1-2 
Safety  Belts 
.............................................. 1-7 
Child  Restraints 
....................................... 1-29 
Supplemental  Restraint  System 
(SRS) ......... 1-51 
Restraint  System  Check 
............................ 1-58 
Keys 
........................................................ 2-3 
Doors  and  Locks 
....................................... 2-8 
Windows 
................................................. 2-1 3 
Theft-Deterrent  Systems 
............................ 2-1 5 
Starting  and Operating  Your Vehicle 
........... 2-19 
Mirrors 
.................................................... 2-33 
Onstar@  System 
...................................... 2-38 
Storage  Areas 
......................................... 2-40 
Sunroof 
.................................................. 2-42 
Vehicle  Personalization 
............................. 2-43 
Instrument Panel  Overview 
.......................... 3-2 
Climate  Controls 
...................................... 3-20 
Warning  Lights, Gages  and  Indicators 
......... 3-23 
Driver  Information Center  (DIC) 
.................. 3-38 
Trip  Computer 
......................................... 3-40 
Audio  System(s) 
....................................... 3-44 
Features  and Controls ..................................... 2-1 
Instrument  Panel ............................................. 3-1 
~rivingi yoerr Vehicle ....................................... 4-1 
Your  Driving, the  Road, and Your  Vehicle 
..... 4-2 
Towing 
................................................... 4-33 
Service 
..................................................... 5-3 
Fuel 
......................................................... 5-5 
Checking  Things  Under  the Hood 
............... 5-10 
Headlamp  Aiming 
..................................... 5-59 
Bulb  Replacement 
.................................... 5-60 
Windshield  Wiper  Blade  Replacement 
......... 5-67 
Tires 
...................................................... 5-68 
Appearance  Care 
..................................... 5-88 
Vehicle  Identification 
................................. 5-96 
Electrical  System 
...................................... 5-97 
Capacities  and Specifications 
................... 5-1 02 
Normal  Maintenance  Replacement  Parts .... 5-1  04 
Maintenance Schedule ........................... ,6-1 .. 
Maintenance  Schedule ................................ 6-2 
Customer Assistance  Information .................... 7-1 
Customer  Assistance  Information 
.................. 7-2 
Service and  Appearance  Care .......................... 5-1 
Reporting  Safety  Defects 
......................... 7-9 
Index ........................................ ..... 1  

These are some  examples of vehicle  symbols  you  may find on your vehicle: 
POSSlBLE A 
CAUTION 
INJURY 
PROTECT  EYES  BY 
SHIELDING 
CAUSTIC 
BAlTERY 
4CID  COULD  CAUSE 
BURNS 
AVO1 
D 
SPARKS OR 
FLAMES 
SPARK  OR  FLAME 
\\I/' 
COULD 
EXPLODE  BAlTERY  LATCH  BOTH  LAP  AND 
SHOULDER  BELTS 
TO 
PROTECT  OCCUPANT 4 
DO  NOT TWIST SAFETY 
BELT  WHEN  AlTACHING 
FASTEN  SEAT 
BELTS 
MOVE  SEAT  FULLY 
\!$% 
REARWARD* /z 
SECURE 
CHILD  SEAT 
PULL  BELT 
COMPLETELY 
THEN  SECURE  CHILD  SEAT 
TI POWER 
WINDOW  DO  NOT  INSTALL 
A  REAR-FACING 
CHILD  RESTRAINT  IN  THIS  SEATING  POSITION 
DO NOT  INSTALL  A 
'ORWARD-FACING  CHILD  RESTRAINT  IN  THIS  SEATING 
POSITION 
DOOR LOCK 
UNLOCK 
L 
LlGHTlNG - MASTER SWITCH e- / ,  
SIGNALS  TURN 
PARKING 
pf 
LAMPS 
RUNNING  LAMPS 
LAMPS 
so 
ENGINE 
COOLANT  TEMP 
CHARGING  BAlTERY 
SYSTEM 
COOLANT 
d 
ENGINE  OIL  PRESSURE 
Wb 
ANTI-LOCK (@) 
BRAKES  ENGINE 
COOLANT  FAN 
OWNERS  MANUAL 
SERVICE 
MANUAL  

Rear  Seat  Outside  Passenger 
Lap-Shoulder  Belt  Positions 
The  positions  next 
to the  windows  have lap-shoulder 
belts.  Here’s 
how to  wear  one  properly. 
Pick up the  latch  plate  and pull  the  belt  across  you. 
Don’t 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. 
1-23  

Child  Restraints 
Older Children 
Older  children who have  outgrown booster  seats should 
wear  the  vehicle’s  safety  belts. 
If  you  have  the  choice,  a child should sit next to  a 
window 
so the  child  can  wear  a  lap-shoulder belt and 
get  the  additional  restraint  a shoulder belt can  provide. 
Q: What is the  proper way to wear  safety  belts? 
A: If possible, an older child should wear  a 
lap-shoulder belt and  get the additional restraint a 
shoulder belt can provide.  The shoulder 
belt 
should not cross the  face  or  neck. The  lap belt 
should  fit snugly below the hips, just  touching  the 
top  of the thighs.  It should  never be worn  over 
the  abdomen,  which could cause severe  or even 
fatal  internal injuries in a  crash. 
Accident statistics  show  that children are safer 
if they 
are restrained  in the  rear  seat. 
In  a crash, children  who  are  not buckled up can strike 
other  people  who  are  buckled up, or can  be thrown 
out  of the vehicle. Older children need to  use safety 
belts properly. 
1-29  

A booster  seat (F-G) is a child restraint designed  to 
improve  the  fit 
of the  vehicle’s  safety  belt system. 
Some  booster  seats  have  a shoulder belt positioner, 
and  some  high-back  booster  seats  have  a five-point 
harness. 
A booster  seat  can also  help  a child to  see 
out  the  window. 
Q: How do child restraints  work? 
A: A child restraint system  is any device designed for 
use  in a  motor  vehicle  to restrain, seat,  or position 
children. 
R built-in child restraint system is i! 
permanent part  of the  motor vehicle.  An add-on 
child restraint system  is a portable  one, which 
is purchased  by the vehicle’s owner. 
For many  years,  add-on child  restraints have used 
the adult belt system in the vehicle.  To help 
reduce the chance  of injury,  the child  also  has to  be 
secured within the  restraint. The vehicle’s belt 
system secures the  add-on child  restraint in the 
vehicle, and the add-on child restraint’s harness 
system  holds the child in place within the  restraint. 
One  system,  the three-point harness, has straps that 
come down  over each  of the infant’s shoulders and 
buckle together  at the  crotch.  The five-point harness 
system has  two shoulder  straps, two hip straps  and a 
crotch  strap. 
A shield may take the place  of hip 
straps. 
A T-shaped shield has shoulder straps that 
are  attached  to a flat  pad which rests 
low against the 
child’s  body. 
A shelf- or armrest-type shield has 
straps that  are attached to a  wide, shelf-like shield 
that  swings  up  or to the  side. 
1-37  

What Will You  See  After  an Air Bag 
Inflates? 
After  an air bag inflates, it quickly deflates, so quickly that 
some  people  may  not  even  realize the air bag  inflated. 
Some  components  of the  air bag  module  -the steering 
wheel  hub for the driver’s air  bag  or the instrument panel 
for  the  right front passenger’s bag 
- will be hot  for a 
short time.  The parts  of the  bag  that  come  into contact 
with  you  may  be warm,  but not too hot  to touch.  There will 
be  some  smoke  and  dust coming  from the vents  in the 
deflated  air bags.  Air  bag  inflation doesn’t prevent the 
driver from seeing  or being able  to steer  the vehicle, 
no-  ”oes  it sto-  Teople from leaving  the vehicle 
When  an  air 
,,g inflates,  there is dust i.. khe 
air.  This  dust  could  cause  breathing  problems 
for  people  with  a  history  of  asthma  or  other  breathing  trouble. 
To avoid this, everyone in 
the  vehicle  should  get  out  as soon as it is  safe 
CAUTION: (Continued)  to  do 
so. If  you hawe breath ...d prob.,.ns 
butcan’t  get  out  of  the  vehicle  after  an air  bag 
inflates,  then  get  fresh  air  by  opening  a 
window  or  a  door.  If  you  experience  breathing 
problems  following  an  air  bag  deployment, 
you  should  seek  medical  attention. 
In  many  crashes  severe  enough  to  inflate an  air bag, 
windshields are broken  by vehicle  deformation. 
Additional windshield  breakage  may  also  occur  from  the 
right front  passenger  air  bag. 
0 Air  bags are designed  to  inflate only  once.  After  an 
air  bag  inflates,  you’ll  need  some  new  parts for 
your  air bag system.  If  you  don’t  get  them,  the air 
bag  system  won’t  be  there to help  protect  you 
in  another crash. 
A new  system  will include  air  bag 
modules  and possibly  other  parts.  The  service 
manual  for  your vehicle  covers the  need  to replace 
other parts. 
I 
1-56  

Section 2 Features and Controls 
Keys ............................................................... 2.3 
Remote  Keyless  Entry  System 
......................... 2.4 
Remote Keyless  Entry  System  Operation ........... 2.5 
Doors  and  Locks ............................................. 2-8 
Door  Locks 
.................................................... 2-8 
Power  Door  Locks 
.......................................... 2-9 
Last  Door  Closed  Locking 
................................ 2-9 
Programmable  Automatic  Door  Locks 
.............. 2-10 
Lockout  Protection 
........................................ 2-10 
Leaving  Your  Vehicle 
.................................... 2-1  1 
Trunk 
.......................................................... 2-1  1 
Windows ........................................................ 2.13 
Power  Windows 
............................................ 2-14 
Sun  Visors 
................................................... 2.14 
Theft-Deterrent  Systems .................................. 2.15 
Content  Theft-Deterrent 
................................. 2.15 
PASS-Key@ 
Ill .......................................... 2.16 
PASS-Key@ 
Ill Operation ........................... 2-17 
Starting  and  Operating  Your  Vehicle ............... -2-1 9 
New  Vehicle  Break-In 
.................................... 2-19 
Ignition Positions 
.......................................... 2.19 
Starting  Your  Engine 
..................................... 2-20 
Engine  Coolant Heater 
.................................. 2-23 
Automatic  Transaxle Operation 
....................... 2.24  Shifting  Into 
Park 
(P) ..................................... 2-28 
Parking  Over  Things  That  Burn 
....................... 2-30 
Shifting 
Out 
of Park (PI ................................. 2-30 
Engine  Exhaust ............................................ 2-31 
Running  Your  Engine  While You  Are  Parked 
.... 2-32 
Mirrors ........................................................... 2-33 
Manual  Rearview  Mirror 
................................ -2-33 
Automatic  Dimming  Rearview  Mirror with 
Onstar@,  Compass  and Temperature 
Automatic  Dimming  Rearview  Mirror with 
Compass  and  Temperature  Display 
.............. 2-34 
Outside  Power Mirrors 
................................... 2-37 
Outside  Convex Mirror 
................................... 2-37 
OnStar@  System ............................................. 2-38 
Storage Areas .... -2-40 
Glove  Box 
................................................... 2-40 
Overhead  Console 
........................................ 2-40 
Center  Console  Storage Area 
......................... 2-40 
Assist  Handles 
............................................. 2-41 
Purse  or  Litter Bag Holder 
............................. 2-41 
Rear  Storage  Area 
........................................ 2-41 
Convenience  Net 
.......................................... 2-41 
Trunk  Access  Panel 
...................................... 2-41 
Display 
.................................................... 2-33 
.................................... 
Parking  Brake .............................................. 2-27 Sunroof .................. ........... ............. 2.42 
2-1  

Leaving Your Vehicle 
If  you  are leaving the  vehicle, take your keys,  open your 1 
door  and  set  the  locks from inside.  Then get out and 
dose the door. 
ur ’ 
It can  be  dangerous  to  drive  with  the trunk lid 
open  because  carbon  monoxide 
(CO) gas  can 
come  into  your  vehicle.  You  can’t  see or 
smell 
CO. It can  cause  unconsciousness  and 
even  death. 
CAUTION: (Continued)  if  you  must  drive  with  the  trunk 
lid aen or if 
electrical  wiring  or  other  cable  connections 
must  pass  through  the  seal  between  the  body 
and  the  trunk  lid: 
0 Make  sure  all  other  windows  are shut. 
0 Turn  the  fan  on  your  heating  or  cooling  system  to  its  highest  speed  and  select  the 
control  setting  that  will  force  outside  air  into  your  vehicle.  See “Climate  Controls” 
in the  Index. 
instrument  panel,  open  them  all  the  way. 
If  you  have  air  outlets  on  or  under  the 
See  “Engine  Exhaust”  in  the  Index. 
Trunk Lock 
To unlock  the trunk from the outside, insert  the  key into 
the lock  on the  trunk and turn it clockwise.  You can  also 
press  the trunk  symbol  on  the remote  keyless entry 
transmitter. 
2-1 1