check engine OLDSMOBILE SILHOUETTE 1994 User Guide
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Problems on the Road 
are some things  you should  know. 
Positive 
(+) will  go  to positive (+) 
and  negative (-) will  go  to negative 
(-) or  a  metal engine  part.  Don’t 
connect 
(+) to (-) or  you’ll  get a 
short that would damage  the battery 
and  maybe  other  parts,  too. 
160 
Your Oldsmobile  has  a remote positive 
(+) jump starting  terminal.  The 
terminal 
is in  the  red  box  on  the  same 
side  of the  engine compartment  as your 
battery. 
You should  always use the 
remote  positive 
(+) terminal instead of 
the positive (+) terminal  on your 
batte 
ry. 
To open  the remote positive (+) 
terminal  box,  pull  the  tab and open the 
cover. 
5. Check  that  the  jumper cables  don’t 
have loose 
or missing  insulation.  If 
they  do, you  could  get 
a shock. The 
vehicles  could be damaged,  too. 
Before  you  connect  the  cables, here 
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Problems on the Road 
1.. 
NOTICE: 
Engine damage from running your 
engine  without  coolant isn’t 
covered  by your warranty.  If 
there  seems  to be 
no leak, check  to 
see  if the  electric engine fan  is running. 
If  the  engine  is overheating,  the fan 
should  be running.  If it isn’t, your 
vehicle needs service. 
How to Add Coolant to the 
Coolant Recovery Tank 
If  you  haven’t  found a problem yet,  but 
the  coolant  level isn’t at  or  above  the 
FULL HOT mark, add a 50/50 mixture 
of 
clean water (preferably distilled) and 
a proper antifreeze  at  the coolant 
recovery  tank. (See 
Engine Coolant in 
the 
Index for more information  about 
the  proper coolant mix.) 
NOTICE: 
In cold  weather,  water  can  freeze 
and  crack  the engine,  radiator, 
heater  core and  other  parts.  Use the 
recommended coolant. 
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Page 183 of 276
Here you will  find  information  about 
the  care  of 
your Oldsmobile . This 
part  begins  with  service  and fuel 
information.  and  then  it  shows how 
to check  important  fluid  and 
lubricant  levels 
. There is  also 
technical  information  about 
your 
vehicle.  and  a section devoted to its 
appearance  care 
. 
Part 6 
Service & Appearance  Care 
Service ........................................................................\
............................................. 182 
Fuel 
........................................................................\
.................................................. 183 
Hood  Release ........................................................................\
................................... 186 
Engine Oil ........................................................................\
........................................ 190 
Air  Cleaner 
........................................................................\
...................................... 194 
Transaxle  Fluid 
........................................................................\
................................ 195 
Engine Coolant 
........................................................................\
................................ 197 
Power  Steering  Fluid 
........................................................................\
....................... 199 
Windshield Washer  Fluid 
........................................................................\
................ 200 
Brakes 
........................................................................\
.............................................. 201 
Battery 
........................................................................\
............................................. 203 
Bulb Replacement 
........................................................................\
........................... 203 
Windshield Wiper Blade Replacement 
................................................................... 205 
Loading  Your Vehicle 
........................................................................\
..................... 206 
Tires 
........................................................................\
................................................. 207 
Appearance  Care ........................................................................\
............................. 212 
Vehicle Identification Number  (VIN) 
.................................................................... 218 
Add-on  Electrical Equipment 
........................................................................\
........ 219 
Fuses & Circuit Breakers ........................................................................\
................ 219 
Capacities  and Specifications 
........................................................................\
......... 224 
Normal  Maintenance  Replacement Parts 
............................................................... 226 
Fluids 
& Lubricants ........................................................................\
........................ 227 
Replacement 
Bulbs ........................................................................\
.......................... 228 
181 
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Service  &Appearance  Care 
184 
MTBE and  ethanol.  By doing so, you 
can  help  clean the  air,  especially  in 
those  parts 
of the  country  that  have 
high  carbon monoxide  levels. 
In  addition,  some gasoline  suppliers  are 
now  producing reformulated gasolines. 
These  gasolines  are specially  designed 
to  reduce  vehicle  emissions.  General 
Motors recommends  that you use 
reformulated gasoline.  By doing 
so, you 
can  help  clean the  air,  especially  in 
those  parts 
of the  country  that have 
high  ozone  levels. 
You should  ask your service  station 
operators  if their  gasolines  contain 
deposit  control  additives and 
oxygenates,  and if they have been 
reformulated  to reduce  vehicle 
emissions. 
Fuels  in  Forei’ Countries 
If you plan  on driving  in  another 
country  outside  the 
U.S. or  Canada, 
unleaded 
fuel may  be  hard to find. Do 
not  use leaded gasoline. If you  use  even 
one  tankful,  your emission  controls 
won’t  work well or at all.  With 
continuous  use, spark  plugs can get 
fouled,  the  exhaust  system can  corrode, 
and  your engine 
oil can  deteriorate 
quicltly.  Your  vehicle’s  oxygen  sensor 
will  be damaged. 
All of that  means 
costly  repairs  that  wouldn’t be  covered 
by  your  warranty. 
To check  on fuel  availability,  ask  an 
auto  club,  or  contact  a  major  oil 
company  that does  business  in  the 
country  where  you’ll be driving. 
You can  also  write us at  the  following 
address  for advice.  Just tell 
us where 
you’re  going and give  your  Vehicle 
Identification  Number (VIN). 
General  Motors Overseas 
Distribution  Corporation 
North American Export Sales (NAES) 
1908 Colonel  Sam  Drive 
Oshawa,  Ontario 
L1H 8P7 
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Service  &Appearance  Care 
190 
Underhood  Light 
Your underhood  light  will  go  on when 
you  open  the  hood. 
Engine Oil 
It’s  a  good idea to check your engine  oil 
every  time you  get  fuel. In order to get 
an  accurate  reading, the oil must  be 
warm  and  the  vehicle must be on  level 
ground. 
Turn  off the  engine  and give  the oil a 
few  minutes  to drain  back into  the  oil 
pan. 
If you  don’t,  the  oil dipstick  might 
not  show  the actual  level. 
To Check  Engine  Oil 
Pull out the dipstick and clean  it with  a 
paper towel  or cloth,  then  push  it back 
in all  the  way.  Remove it again, keeping 
the  tip  lower, and check  the level. 
3100 V6: Checking  Engine  Oil 
3800 V6: Checking  Engine Oil 
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3100 V6: Replacing  Air  Cleaner  Filter 
2. Remove the air cleaner filter. 
3. Be sure  to  install the air cleaner filter, 
replace  the cover  and  tighten  the 
wing  nut securely. 
3800 V6 Checking Air Cleaner  Filter 
To Check  or  Replace: . 
1. Loosen  the four wing  nuts. 
3800 V6: Replacing Air Cleaner  Filter 
2. Pull the  top  of the  air cleaner  toward 
the  front  of the  vehicle  and remove 
the  air cleaner filter. 
3. Be sure  to  install the air cleaner filter, 
replace  the cover  and tighten  the 
wing  nuts securely. 
Automatic  Transaxle  Fluid 
When to Check and Change 
A good time to check your  automatic 
transaxle  fluid  level  is  when the engine 
oil  is  changed.  Refer 
to the  Maintenance 
Schedule  to determine  when to change 
your fluid.  See 
Scheduled Maintenance 
Services 
in  the Index. 
How to Check 
Because  this  operation  can be a  little 
difficult,  you may  choose  to have  this 
done  at  an Oldsmobile dealership 
Service  Department. 
If  you  do it yourself, be  sure  to follow 
all  the  instructions  here,  or  you could 
get  a false  reading  on  the dipstick. 
NOTICE: 
Too much or  too  little fluid  can 
damage your  transaxle. 
Too much 
can  mean  that some  of the  fluid 
could come  out  and fall on  hot 
engine  parts  or  exhaust  system, 
starting  a  fire. Be sure  to  get an 
accurate  reading if you  check your 
transaxle  fluid. 
Wait  at least 
30 minutes  before 
checking  the transaxle  fluid  level 
if you 
have  been  driving: 
When  outside  temperatures  are  above 
At high speed for  quite  a while. 
In heavy  traffic-especially  in hot 
While  pulling  a trailer. 
90°F (32°C). 
weather. 
195 
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Service &Appearance Care 
196 
To get the  right reading,  the fluid 
should  be at normal  operating 
temperature,  which is 
180°F to 200°F 
(82°C to 93°C). 
Get the vehicle  warmed  up by driving 
about 
15 miles  (24 ltm) when  outside 
temperatures  are  above 
50°F (10°C). If 
it's colder  than 50°F ( 10°C), you may 
have  to drive longer. 
To  Check  the  Fluid  Level 
Park  your vehicle  on a level  place. 
With  the parking  brake applied,  place 
With your foot  on  the brake pedal, 
the 
shift  lever  in 
P (Park). 
move  the shift  lever  through  each gear 
range,  pausing for  about  three 
seconds  in each  range.  Then, position 
the  shift  lever  in 
P (Park). 
Let the engine  run at idle for  three  to 
five  minutes. 
Then,  Without  Shutting Off the 
Engine,  Follow  these  Steps: 
1. Pull  out  the  dipstick  and wipe  it with 
a  clean  rag or paper towel. 
2. Push  it back  in  all  the way,  wait three 
seconds  and  then  pull  it back out 
again. 
3. Check  both sides of the dipstick,  and 
read  the lower  level.  The fluid  level 
must  be in the  cross-hatched  area. 
4. If the  fluid  level  is  in  the acceptable 
range,  push  the  dipstick back in  all 
the  way. 
3100 V6: Checking  Automatic 
rransaxle  Fluid 
3800 V6: Checking  Automatic 
rransaxle  Fluid 
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How to Add Fluid 
Refer to  the  Maintenance  Schedule  to 
determine  what  kind of transaxle  fluid 
to  use.  See 
Recommended  Fluids and 
Lubricants 
in  the Index. 
If the  fluid  level  is  low, add only  enough 
of  the  proper  fluid to bring  the level  into 
the  cross-hatched  area 
on the dipstick. 
1. Pull  out  the  dipstick. 
2. Using a long-neck  funnel:  add 
enough  fluid at  the  dipstick hole  to 
bring  it to  the  proper level. 
It  doesn’t  take  much fluid, generally  less 
than  a  pint 
(OSL). Don’t  overfill. We 
recommend  you  use only  fluid  labeled 
DEXRONo-I11  or DEXRON@-IIE, 
because fluids with  that label  are made 
especially  for your automatic  transaxle. 
Damage  caused by fluid  other  than 
DEXRONo-I11  or DEXRONB-IIE  is  not 
covered  by your  new vehicle  warranty. 
After adding fluid, recheck  the fluid 
level  as described  under 
How to 
Check. 
obtained,  push  the dipstick back in  all 
the  way. 
When  the correct  fluid  level  is 
3100 V6: Adding  Automatic  Transaxle 
Fluid 
3800 V6: Adding  Automatic  Transaxle 
Fluid 
Engine Coolant 
The  following  explains your cooling 
system  and how  to add  coolant  when  it 
is 
low. If  you  have  a problem  with 
engine  overheating,  see 
Engine 
Overheating 
in  the Index. 
The proper  coolant for your Oldsmobile 
will: 
Give  freezing  protection  down to-34”F 
Give boiling  protection  up  to  262°F 
Protect against rust  and  corrosion. 
Help keep  the proper engine 
Let  the  warning  lights work as they 
What to Use 
Use a mixture  of one-half clean  water 
(preferably distilled)  and one-half 
antifreeze  that meets 
“GM Specification 
1825-M:” which won’t damage 
aluminum  parts. 
You can also use  a 
recycled  coolant conforming  to 
GM 
Specification  1825-M with  a complete 
coolant flush  and refill. 
If you use this 
mixture, 
you don’t  need to add  anything 
else. 
(-37°C). 
( 12SoC). 
temperature.  should. 
197 
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Service &Appearance Cure 
NOTICE: 
198 
If you  use an improper  coolant mix, 
your engine  could overheat  and be 
badly  damaged.  The  repair 
cost 
wouldn’t be  covered by your 
warranty.  Too much  water  in the 
mix  can freeze  and crack  the 
engine,  radiator,  heater  core and 
other  parts. 
Adding Coolant 
To Check  Coolant 
When  your engine  is cold,  the coolant 
level  should  be at 
COLD, or  a  little 
higher.  When your engine  is warm,  the 
level  should  be up  to 
FULL HOT, or a 
little higher. 
3100 V6: Checking  Coolant 
3800 V6: Checking  Coolant 
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To Add Coolant 
If you  need  more  coolant, add  the proper 
mix 
at  the  coolant  recovery  tank. 
Add  coolant  mix at  the  recovery  tank, 
but  be  careful  not  to spill it. 
Radiator  Pressure  Cap 
NOTICE: 
Your radiator  cap  is a 15 psi (105 
kPa)  pressure-type  cap and  must  be 
tightly  installed  to prevent  coolant 
loss  and possible engine damage 
from  overheating.  Be sure  the 
arrows  on  the  cap  line up  with  the 
overflow  tube  on  the  radiator  filler 
neck. 
When  you replace  your radiator 
pressure  cap,  an  AC8 cap is 
recommended. 
Thermostat 
Engine  coolant  temperature  is 
controlled  by a  thermostat  in  the  engine 
coolant  system. The  thermostat  stops 
the  flow  of coolant  through  the  radiator 
until  the  coolant  reaches  a  preset 
temperature. 
When  you  replace your  thermostat,  an 
AC@ thermostat is recommended. 
Power  Steering  Fluid 
How To Check  Power  Steering 
Fluid 
Unscrew  the cap  and  wipe  the  dipstick 
with  a  clean rag.  Replace  the  cap  and 
completely  tighten  it.  Then  remove the 
cap  again  and look  at the  fluid  level  on 
the  dipstick. 
When  the engine  compartment  is hot, 
the  level  should  be at  the 
H (Hot) 
mark. 
When  the engine  compartment  is 
cool,  the level  should  be  at  the 
C 
(Cold) mark. 
199 
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