
The 2003 Oldsmobile Alero Owner Manual a 
Seats and Restraint  Systems ........................... 1-1 
Front  Seats 
............................................... 1-2 
Rear  Seats 
............................................... 1-8 
Safety  Belts 
.............................................. 1-9 
Child  Restraints 
....................................... 1-32 
Supplemental  Restraint  System  (SRS) 
...................................... 1-53 
Restraint  System  Check 
............................ 1-60 
Keys 
........................................................ 2-2 
Doors  and  Locks 
....................................... 2-7 
Windows 
................................................. 2-1 4 
Theft-Deterrent  Systems ............................ 2-1 6 
Starting  and  Operating  Your  Vehicle 
........... 2-17 
Mirrors 
.................................................... 2-32 
Siorage  Areas 
......................................... 2-34 
Sunroof .................................................. 2-35 
Instrument  Panel  Overview 
.......................... 3-4 
Climate  Controls 
...................................... 3-1  9 
.w .arning  Lights,  Gages  and  indicators ......... 3-23 
Audio System(s) ....................................... 3-38 
Features  and  Controls 
..................................... 2-1 
Instrument  Panel 
............................................. 3-1  Driving  Your  Vehicle 
....................................... 4-1 
Your  Driving, the  Road, and Your  Vehicle 
..... 4-2 
Towing 
................................................... 4-31 
Service 
..................................................... 5-3 
Fuel ......................................................... 5-5 
Checking Things  Under 
the 
Hood ............................................... 5-9 
Headlamp Aiming 
..................................... 5-47 
Bulb Replacement .................................... 5-49 
Windshield  Wiper Blade Replacement 
......... 5-52 
Tires 
...................................................... 5-53 
Appearance  Care 
..................................... 5-72 
Vehicle  Identification 
................................. 5-80 
Electrical System 
...................................... 5-81 
Zapai;iiit=s at-tii ~J~LIIIL~LIUI I> 5-w~ 
Normal  Maintenance  Replacement Parts ...... 5-88 
Maintenance  Schedule ........................... ... 6-1 
Maintenance Schedule 
................................ 6-2 
Customer  Assistance  Information 
.................... 7-1 
Customer 
Assistance iniorrnation .................. 7-2 
Index ................................................................. 1 
Service 
and Appearance Care 
.......................... 5-1 
n.- - -:I: - -1: - .- - .....................  

Engine  Coolant  Temperature  Gage 
This gage shows the engine coolant 
temperature. 
if the  gage 
pointer moves into the  red 
area,  the  light comes 
on and you  hear  a  chime, 
your  engine 
is too hot. 
It  means  that  your engine 
coolant has overheated. 
See 
Engine  Overheating  on  page 5-26. 
Low Coolant  Warning  Light 
1 
This light comes on 
briefly  when you turn  your 
ignition  on. 
!f this !ight comes on and stays on and you hear a 
chime,  the coolant  level  in  your  vehicle  is low. 
See 
Engine  Coolant on page 5-23. If the  light  is on  along 
with an overheat  warning,  you  may  have a 
serious overheating problem.  See 
Engine Coolant 
Temperature  Gage on page 3-31 
listed previously. 
Notice: Damage to  your engine from  neglected 
coolant  problems  can be costly  and  is not  covered 
by  your  warranty. 
See 
Engine  Overheating  on  page  5-26 for  information 
on  what 
to do.  Your  vehicle should be serviced  as soon 
as  possible. 
Malfunction  Indicator  Lamp 
Service  Engine Soon  Light  in the 
United  States 
or Check Engine Light  in 
Canada 
17 
SERVICE 
ENGINE 
SOON 
II I I I 
United  States  Canada 
Your  vehicle is equipped  with  a  computer which 
monitors operation  of the fuel,  ignition  and emission 
control systems. 
3-3 1  

It will stay  on,  or  come on and a chime will sound if it 
detects  a  problem  on  the  vehicle,  such as a Daytime 
Running  Lamps  (DRL)  or  an automatic headlamp 
system  malfunction.  If this happens,  see  your dealer as 
soon  as  possible. 
Fuel Gage 
United  States  Canada Your 
fuel  gage tells  you about  how much fuel  you have 
left, when the  ignition  is on.  When  the  indicator nears 
empty,  the  light will come  on and  you will  hear  a chime. 
You  still have  a little fuel  left,  but  you should get 
more  soon. 
Here are four things that  some  owners  ask about.  None 
of  these show  a problem with  your fuel gage: 
e 
e 
e 
e 
At  the service  station, the gas  pump shuts off 
before the  gage  reads  full. 
It takes  a little more or  less  fuel to 
fill up than  the 
gage indicated. For  example,  the gage  may have 
indicated the tank  was  half full, but it actually took  a 
little more  or less  than  half  the tank’s capacity  to 
fill the tank. 
The  indicator moves  a little  when  you turn  a corner 
or  speed  up. 
The  gage goes back to  empty  when you turn 
off the 
ignition. 
3-37  

The cut tape detection feature  of your cassette tape 
player  may identify  the cleaning cassette as  a  damaged 
tape,  in error.  To  prevent the cleaning cassette from 
being  ejected,  use the following steps. 
1. Turn  the  ignition on. 
2. Turn  the  radio off. 
3. Press  and  hold  the  TP  CD button for five seconds. 
4. Insert the scrubbing action cleaning cassette. 
5. Eject  the cleaning cassette after  the manufacturer’s 
recommended  cleaning time. 
You  may  also choose  a  non-scrubbing action, wet-type 
cleaner  which  uses  a  cassette with a fabric belt  to 
clean  the tape head. This  type 
of cleaning cassette will 
not eject  on its own.  A  non-scrubbing action cleaner 
may  not clean  as thoroughly  as the  scrubbing type 
cleaner.  The  use  of a non-scrubbing action, dry-type 
cleaning cassette is not  recommended. 
After  you clean  the player, press and  hold the eject 
button  for  five  seconds  to reset the  CLEAN  PLAYR 
indicator.  The radio will  display  CLEANED to show  the 
indicator  was reset. 
Cassettes are subject  to wear  and  the sound  quality 
may  degrade  over time. Always  make  sure the cassette 
tape  is in  good  condition before  you  have your tape 
player  serviced. 
Care of Your CDs 
Handle  discs carefully.  Store  them  in their  original  cases 
or  other protective  cases  and  away  from  direct  sunlight 
and  dust. 
If the surface  of a disc is  soiled,  dampen 
a clean, soft cloth  in a  mild,  neutral  detergent  solution 
and clean 
it, wiping  from  the  center to  the  edge. 
Be  sure never to touch  the side  without  writing  when 
handling discs. Pick  up discs  by grasping  the  outer 
edges  or the  edge  of the  hole  and  the  outer  edge. 
Care of Your CD Player 
The  use  of  CD  lens cleaner  discs is not  advised,  due  to 
the  risk  of contaminating  the lens  of the  CD optics 
with  lubricants internal to the  CD  mechanism. 
Backglass  Antenna 
Your  AM-FM  antenna is integrated with  your  rear 
window  defogger, located in  the  rear  window.  Be  sure 
that the inside surface  of the  rear  window  is  not 
scratched  and that  the lines  on the  glass  are  not 
damaged. 
If the  inside  surface is damaged,  it could 
interfere with  radio  reception. 
3-66  

California Fuel 
If your vehicle is certified  to meet  California Emission 
Standards  (see the underhood  emission control label), it 
is  designed  to operate  on fuels that  meet California 
specifications. 
If this fuel is not available  in states 
adopting  California emissions standards, your vehicle 
will operate satisfactorily  on fuels  meeting  federal 
specifications, but emission control  system  performance 
may  be  affected.  The  malfunction indicator lamp  may 
turn  on (see 
Malfunction indicator Lamp  on page 3-31 ) 
and your vehicle  may fail a  smog-check  test. If this 
occurs,  return to  your authorized  GM dealer  for 
diagnosis.  If  it is determined that  the condition  is caused 
by  the  type of fuel  used, repairs  may not be  covered 
by  your  warranty. 
Additives 
To provide cleaner air,  all gasolines  in the  United States 
are now  required  to contain additives that will  help 
prevent  engine and fuel  system  deposits from forming, 
allowing  your emission control  system to work 
properly.  You should not  have to add anything to your 
fuel.  Gasolines containing oxygenates,  such as 
ethers and ethanol, and  reformulated gasolines  may  be 
available  in your area  to contribute  to  clean air. 
General  Motors recommends  that you  use  these 
gasolines,  particularly 
if they  comply  with  the 
specifications described earlier. 
Notices Your  vehicle  was  not  designed  for  fuel that 
contains methanol.  Don’t  use fuel containing 
methanol.  It can corrode  metal  parts in  your  fuel 
system  and also  damage the plastic  and  rubber 
parts.  That damage  wouldn’t be covered  under  your 
warranty. 
Some  gasolines that  are  not  reformulated  for  low 
emissions  may contain  an octane-enhancing  additive 
called methylcyclopentadienyl  manganese  tricarbonyl 
(MMT);  ask  the  attendant where  you  buy  gasoline 
whether  the fuel contains  MMT.  General  Motors  does 
not  recommend  the use  of  such  gasolines.  Fuels 
containing MMT  can reduce  the  life of  spark  plugs  and 
the  performance  of the  emission control  system  may 
be  affected.  The malfunction indicator  lamp  may turn on. 
If  this occurs, return  to  your authorized  GM dealer  for 
service. 
Fuels  in Foreign  Countries 
If  you  plan on driving in  another country outside  the 
United States or  Canada, the proper fuel  may  be hard 
to  find.  Never  use  leaded gasoline  or  any  other  fuel 
not  recommended  in the  previous text  on  fuel.  Costly 
repairs  caused  by use  of improper  fuel wouldn’t  be 
covered  by your  warranty. 
To  check  the fuel  availability,  ask  an  auto  club,  or 
contact  a major oil  company  that  does  business  in the 
country  where you’ll be driving. 
5-6  

How to Reset  the  Change Oil Light 
The  GM Oil Life SystemTM calculates  when to change 
your engine  oil and filter  based  on  vehicle use.  Anytime 
your oil  is changed,  reset the system 
so it can 
calculate  when the  next oil  change is required.  If  a 
situation occurs  where  you  change  your  oil prior to a 
CHANGE  OIL light being turned  on, reset  the system. 
After  changing  the engine  oil,  the  system  must  be reset. 
To  reset the oil  life indicator,  do  the following steps: 
1. With the ignition  key in ON (a  short  time after 
turning 
off the  engine), press  the RESET  button 
located in the driver's side  instrument panel 
fuse block.  See "Instrument Panel  Fuse Block" 
under 
Fuses  and Circuit  Breakers  on  page 5-81. 
2. When the CHANGE  OIL light starts  to flash, press 
and  hold  the RESET  button again. 
The  reset 
is complete  when  you  hear the chimes and 
the  CHANGE 
OIL light  goes  out. 
If your vehicle is  equipped with a  2.2L  L4 ECOTEC 
engine,  it has  a unique oil filter  element.  When 
reinstalling  the filter  cap  do  not exceed 
18 Ib  ft (25 N*m ). 
Inspect  the condition  of the  O-ring  and replace if 
damaged. 
See  your dealer for  additional information. 
What to Do with Used Oil 
Used engine  oil contains certain  elements  that  may  be 
unhealthy  for your  skin  and  could even  cause  cancer. 
Don't let  used oil stay  on  your  skin for  very  long.  Clean 
your skin  and nails  with  soap  and  water,  or a  good 
hand  cleaner.  Wash or properly dispose 
of clothing  or 
rags containing  used engine  oil.  See  the  manufacturer's 
warnings  about  the use  and  disposal  of  oil  products. 
Used  oil can  be  a threat  to the  environment.  If  you 
change  your  own  oil, be sure to drain  all  the oil from  the 
filter  before disposal.  Never dispose  of  oil  by  putting it 
in the trash, pouring it  on the  ground,  into sewers,  or  into 
streams  or bodies of  water. Instead,  recycle it by 
taking  it to  a place  that collects  used  oil. 
If you  have  a 
problem  properly disposing  of  your  used 
oil, ask 
your dealer,  a service station  or  a local  recycling  center 
for  help. 
5-20  

Brake Wear 
Your vehicle  has four-wheel disc brakes. 
Disc brake  pads  have built-in wear indicators that  make 
a  high-pitched warning  sound  when the brake  pads 
are  worn  and  new  pads  are needed.  The  sound 
may  come  and  go  or  be  heard all the time your vehicle 
is  moving  (except when  you  are pushing  on the 
brake pedal firmly). 
-- 
le  bra  wear  warning  sound  means that 
soon  your brakes  won’t work well. That could 
lead  to  an  accident.  When  you  hear  the  brake 
wear  warning  sound,  have your vehicle 
serviced. 
Notice: Continuing  to drive with  worn-out brake 
pads could  result in costly brake repair. 
Some driving conditions  or climates  may cause  a brake 
squeal  when the  brakes are first applied or  lightly 
applied. This  does not mean  something  is wrong  with 
your  brakes.  Properly torqued 
wheel nuts are  necessary  to help 
prevent brake pulsation.  When tires are  rotated,  inspect 
brake  pads for wear  and  evenly tighten  wheel  nuts in 
the  proper  sequence 
to GM torque  specifications. 
Brake  linings should  always  be  replaced  as  complete 
axle sets. 
See 
Brake System Inspection  on  page 6-14. 
Brake  Pedal Travel 
See  your  dealer if the brake pedal  does  not  return  to 
normal height, or 
if there is  a  rapid  increase  in 
pedal travel. This could  be  a sign of brake  trouble. 
Brake Adjustment 
Every  time you  make a moderate  brake  stop,  your  disc 
brakes adjust  for  wear. 
If you rarely  make  a  moderate 
or  heavier stop,  then your brakes  might  not  adjust 
correctly.  If  you drive in  that way,  then 
- very 
carefully 
- make  a few  moderate  brake  stops  about 
every 
1,000 miles (1 600 km), so your  brakes  will  adjust 
properly. 
5-40  

Headlamp Aiming 
Your  vehicle  has a headlamp  system equipped with 
horizontal  and  vertical  aim  indicators. The  aim  has  been 
pre-set  at  the  factory  and  should need no further 
adjustment.  This is  true  even fnough your  vertieai 
and 
horizontal  aim  indicators  may  not fall exactly  on the 
“0 (zero)  marks  on  their  scales. 
If your  vehicle  is  damaged  in  an accident, the  headlamp 
aim  may  be  affected.  Aim  adjustment may  be necessary 
if  it  is  difficult  to  see  lane markers (for horizontal 
you  (for  vertical aim). If you  believe  your headlamps 
need  to be  re-aimed, 
we recommend that  you take  it to 
your  dealer  for  service;  however,  it is  possible for 
you  to  re-aim  your  headlamps  as described in the 
following  procedure. 
~im), nr if ~n~nmins drivers flash their hi9h beams  at 
Notice: To make  sure  your headlamps are  aimed 
properly,  read all the  instructions  before beginning. 
Failure to  follow these instructions  could  cause 
damage  to headlamp  parts. 
To  check  the aim,  the vehicle  should  be properly 
prepared as follows: 
The  vehicle must have  all four  tires  on a perfectly 
level  surface. 
If  necessary, pads  may  be  used  on  an  uneven 
surface. 
The  vehicle should not  have  any  snow, ice or mud 
attached  to it. 
The  vehicle should  be  fully assembled and  aii other 
work  stopped while  headlamp aiming is  being  done. 
There should not  be any  cargo  or  loading of 
the  vehicle, except it  should  have a full  tank  of 
fuel  and  one person  or 
160 Ibs. (75 kg) on 
the driver’s seat. 
Close  all doors. 
Tires should  be properly  inflated. 
Rock the vehicle  to stabilize  the suspension. 
5-47