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Low Coolant  Warning  Light 
--I If this light comes on  and 
LOW 
COOLANT 
stays on, the vehicle should 
promptly be pulled  off 
the  road and  the coolant 
level checked. 
See  “Engine  Coolant’’  in the  Index.  If there  are  visible 
signs 
of steam,  see  “Engine Overheating”  in the Index 
before  opening the hood. Have your vehicle serviced  as 
soon as  you can. 
Malfunction  Indicator  Lamp 
(Check  Engine 
Light) 
CHECK 
ENGINE 
Your  Oldsmobile  is 
equipped  with a computer 
which  monitors operation 
of  the  fuel,  ignition and 
emission  control systems. 
This  system 
is called OBD  I1 (On-Board 
Diagnostics-Second  Generation) and is intended to 
assure that  emissions are at acceptable levels  for the life 
of the vehicle, helping to produce  a  cleaner 
environment. 
(In Canada, OBD I1 is  replaced  by 
Enhanced Diagnostics.)  The CHECK  ENGINE light 
comes on to  indicate that there  is a problem and  service 
is required. Malfunctions often will  be indicated  by 
the 
system before any problem is apparent.  This may 
prevent more serious damage  to your vehicle.  This 
system  is also  designed  to assist your service technician 
in correctly diagnosing any  malfunction. 
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NOTICE: 
If  you keep driving your vehicle  with  this  light 
on,  after  a while,  your  emission controls  may  not 
work  as well,  your  fuel  economy may  not  be  as 
good  and your  engine  may  not  run as smoothly. 
This 
could lead  to costly  repairs  that  may  not  be 
covered  by  your  warranty. 
This light should come  on, as a check  to show  you it is 
working,  when the ignition is on and the  engine is not 
running. 
If the  light doesn’t come  on, have it repaired. 
This  light will also come on  during  a malfunction in one 
of  two  ways: 
0 
0 Light  Flashing -- A misfire  condition  has  been 
detected.  A misfire increases  vehicle  emissions and 
may  damage  the  emission  control  system on your 
vehicle. Retailer or qualified service  center  diagnosis 
and  service  is  required. 
Light On Steady -- An emission  control system 
malfunction has been detected 
on your vehicle. 
Retailer  or  qualified service  center  diagnosis  and 
service  may be required. 
If the  Light Is Flashing 
The  following  may prevent more serious damage  to 
your vehicle: 
0 Reducing vehicle  speed. 
0 Avoiding hard accelerations. 
Avoiding steep uphill  grades. 
If you are towing  a trailer,  reduce  the amount  of 
cargo  being hauled as soon  as it  is  possible. 
If  the light  stops  flashing  and remains on steady, see  “If 
the  Light 
Is On  Steady”  following. 
If  the  light  continues  to  flash,  when it is safe  to do 
so, 
stop the vehicle. Find  a  safe  place to park your vehicle. 
Turn the key off, wait  at least 
10 seconds and restart the 
engine. 
If the  light  remains on steady,  see “If the Light 
Is  On  Steady”  following. 
If the light  is still  flashing, 
follow  the previous  steps,  and drive the vehicle 
to your 
retailer  or  qualified  service  center 
for service. 
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If the Lipht Is On Steady 
YOU may be ame to correct  the emission system 
malfunction  by considering  the following: 
Did  you recently  put fuel  into  your vehicle? 
If so, reinstall the fuel cap, making  sure  to fully install 
the  cap.  The  diagnostic  system can determine 
if the fuel 
cap  has been 
left off or improperly installed. A loose  or 
missing  fuel  cap  will allow  fuel  to  evaporate  into  the 
atmosphere. 
A few  driving  trips  with the cap properly 
installed should turn  the  light 
off. 
Did you just  drive  through  a deep puddle of water? 
If so, your electrical system  may be wet.  The condition 
will usually be corrected when  the electrical system 
dries  out. 
A few driving  trips  should turn the  light off.  Have 
you recently changed brands  of fuel? 
If 
so, be  sure  to  fuel your vehicle with quality  fuel (see 
“Fuel” in the  Index). 
Poor fuel quality will  cause your 
engine  not to run as efficiently as designed.  You may 
notice this as  stalling after start-up,  stalling when  you 
put the  vehicle  into  gear, misfiring, hesitation on 
acceleration  or  stumbling  on acceleration.  (These 
conditions  may go away once the  engine is warmed  up.) 
This  will be detected  by the system and  cause the light 
to turn on. 
If  you  experience  one or more  of these  conditions, 
change 
the fuel  brand you use.  It  will require  at least 
one  full tank  of the  proper  fuel to 
turn the light  off. 
If  none  of 
the above steps have made the light turn off, 
have your retailer  or qualified service  center check the 
vehicle.  Your retailer has  the proper test equipment  and 
diagnostic tools  to fix  any mechanical  or electrical 
problems that  may have  developed. 
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Oil Pressure  Warning Light 
This light tells you if there 
could  be a problem with 
your  engine  oil pressure. 
This light  can come  on briefly, which is normal and 
doesn’t show  a  problem: 
0 As a  bulb  check, the light comes on when you turn 
your key 
to RUN and  goes  off when the  engine is 
started. If it doesn’t,  be sure  to  have it fixed so it will 
be  there 
to warn  you. 
For the  four  cylinder  engine,  when idling  at a  stop 
sign,  the light may blink on and then  off.  In addition, 
if  you  make 
a hard  stop,  the light  may come on  for 
a  moment. 
But, when  this  light comes  on and stays on, it means oil 
isn’t going through your  engine properly. 
You could be 
low on  oil,  or you might have some other  oil problem. 
Don’t  keep  driving 
if the oil pressure  is low. If 
you  do,  your  engine  can  become so hot  that  it 
catches  fire. 
You or  others  could be burned. 
Check  your  oil 
as soon as possible and  have  your 
vehicle  serviced. 
NOTICE: 
Damage  to  your  engine  from  neglected  oil 
problems  can  be  costly and 
is not  covered  by 
your  warranty.  
     
        
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Check  Oil  Light (If Equipped) Passlock  Warning  Light 
CHECK 
OIL 
If you have  a 3 100  engine, 
this  light  should come on 
briefly  when  you  start  the 
engine. 
If the light doesn’t 
come  on,  have it repaired. 
If the  light  comes on  and 
stays on after starting your 
vehicle,  your engine  oil 
level  should  be  checked. SECURITY 
This  light  will come on 
briefly when  you  turn the 
key  toward the  START 
position. The light will stay 
on  until  the engine  starts. 
Prior  to checking  the  oil  level,  be sure  your  vehicle has 
been  shut off for  several  minutes and is on  a  level 
surface. Check the  oil  level on your  dipstick  and bring  it 
to  the  proper level.  See “Engine  Oil” in the Index. 
NOTE: 
A false  CHECK OIL light may  be  generated 
when parking  on steep  grades. 
The 
oil level  monitoring system  only checks oil level 
during the  brief period between key  on  and engine 
crank.  It does  not  monitor  engine  oil  level  when the 
engine  is running. Additionally,  an oil  level check is 
only  performed  if the  engine  has been  turned  off  for  a 
considerable period  of time  allowing the oil normally  in 
circulation  to drain  back into  the  oil  pan. 
If the light  flashes,  the Passlock system  has entered  a 
tamper  mode, 
If the vehicle  fails  to start, see “Passlock” 
in the Index. 
If  the  light  comes on continuously  while driving and 
stays  on, there  may  be  a problem  with the Passlock 
system.  Your vehicle  will not be protected  by Passlock, 
and  you  should see your  retailer. 
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Cruise  Light 
The CRUISE light comes 
on whenever  you set your 
cruise  control. 
CRUISE 
Up Shift  Light  (Manual  Transaxle) 
This light comes on when 
you need to shift to the next 
higher  gear. See “Manual 
Transaxle”  in the Index. 
Low  Washer  Light 
LOW 
WASH 
Check Gages Light 
CHECK 
GAGES 
The LOW WASH FLUID 
light will come on when 
you  turn on the ignition, and 
the  fluid  container  is less 
than one-third  full. 
This  light will  come on 
briefly when  you are 
starting  the engine. 
If it 
stays  on,  or  if it comes on 
and stays 
on while  you are 
driving,  check your  various 
gages  to  see 
if they are in 
the  warning zones.  
     
        
        Page 133 of 372

BI-LEV: Use on cool, but sunny  days.  This  setting 
brings  in the  outside  air, but directs 
it in two ways. The 
cool  air is  directed  to  the  upper portion of your body 
through the  instrument panel outlets,  but slightly 
warmer  air  is directed  through the heater  ducts  and 
defroster  vents. At  times  this  temperature  difference 
may  be more  apparent  than others. 
The  air  conditioner  compressor 
is enabled in all three air 
conditioning  positions. 
VENT Use when  outside  temperatures  are  mild,  and 
little  heating  or  cooling  is  needed. Airflow comes 
through  the  instrument  panel outlets.  Set the center 
control  knob  to  the temperature  desired. 
HEAT This  setting  brings heated  air  through the heater 
ducts, and some through  the windshield  defroster  vents. 
If  you have the  optional  engine  coolant  heater  (engine 
block  heater)  and use  it  during  cold weather, 
0°F 
(- 18 O C) or lower, your  heating system will more quickly 
provide  heat because  the  engine  coolant  is  already 
warmed.  See “Engine Coolant Heater”  in the  Index. 
DEFOG: This  setting  divides  airflow equally between 
the  heater  ducts  and the windshield  defroster vents. 
DEF: This  setting  directs  air  through the 
windshield  defroster vents located on top 
of the 
instrument  panel. 
Air Conditioning 
The  air  conditioner  and heater work best  if  you keep 
your windows  closed while using  them. Your vehicle 
also  has  the flow-through  ventilation system described 
later  in  this section. 
Your  system  has three  air  conditioner  settings in 
addition  to  the  standard  climate  control system. Before 
using your air  conditioner on very hot days, open the 
windows  long enough 
to let hot  inside  air escape.  This 
reduces  the amount 
of work your  air conditioner’s 
compressor will have  to  do, which should help 
fuel  economy.  
     
        
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Rear Window  Defogger 
The rear window defogger 
uses  a warming  grid  to 
remove  fog from the 
rear  window. 
Press  the defogger  switch.  The  indicator  light  will glow. 
If  your  vehicle  is traveling under 
45 mph (70 km/h),  the 
rear  window  defogger  will turn off automatically  after 
about 
10 minutes of use. If your vehicle  is  traveling 
over 
45 mph (70 km/h),  the defogger  will  operate 
continuously.  You can turn  the  defogger 
off by turning 
off  the ignition 
or pressing the  switch  again. 
Do not attach a temporary  vehicle license across the 
defogger  grid 
on the rear  window. 
NOTICE: 
Don’t  use a razor  blade or something  else sharp 
on the  inside 
of the rear  window. If you do, you 
could cut or  damage the warming  grid, and  the 
repairs  wouldn’t  be covered  by your  warranty. 
Ventilation  System 
Your Oldsmobile’s flow-through  ventilation system 
supplies  outside  air  into the vehicle when it is moving. 
Outside  air  will also enter the vehicle  when the  fan 
is  running.