CADILLAC DEVILLE 1998 7.G Owners Manual
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Improperly  tightened wheel nuts  can  lead to 
brake pulsation  and  rotor  damage. To avoid 
expensive  brake  repairs,  evenly tighten  the  wheel 
nuts  in  the  proper  sequence and  to  the  proper 
torque  specification. 
Don’t  try  to  put  a  wheel  cover  on  your  compact  spare 
tire.  It  won’t  fit.  Store the  wheel  cover  in  the  trunk 
until  you  have  the  flat tire  repaired 
or replaced. 
I NOTICE: 
Wheel covers  won’t fit on your  compact  spare. If 
you try  to  put  a wheel  cover  on  your  compact 
spare,  you could  damage  the  cover or the  spare. 
Storing the Flat  Tire  and Tools 
L 
Storing a jack, a tire  or  other  equipment  in  the 
passenger  compartment 
of the  vehicle  could 
cause  injury.  In a  sudden  stop 
or collision,  loose 
equipment  could strike  someone.  Store  all  these 
in  the  proper  place. 
After  you’ve  put  the  compact  spare  tire  on  your  vehicle, 
you’ll  need  to  store  the  flat tire  in  your 
trunk. Use  the 
following  procedure 
to secure  the  flat tire  in  the  trunk. 
Put  the  flat  tire  in the  trunk 
so the  side  that  faces  out 
when 
it is  on  the  vehicle is facing  down.  The  full-size 
tire  will  not 
fit down  into  the  well.  Place  it so the  front 
is in  the  well  and  the  rear  is  out of the  well. 
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Downloaded from www.Manualslib.com manuals search engine Secure  the tire with  the  retainer  that  was  used  to  hold 
the  compact  spare 
in place.  Store the  cover  as far 
forward as  possible. 
Storing the  Spare  Tire and Tools 
I 
Storing  a  jack,  a  tire  or  other  equipment  in  the 
passenger  compartment 
of the  vehicle  could 
cause  injury.  In  a  sudden  stop  or  collision,  loose 
equipment  could  strike  someone.  Store  all  these 
in  the  proper  place. 
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Downloaded from www.Manualslib.com manuals search engine The compact  spare is for temporary  use  only.  Replace 
the  compact  spare  tire  with  a  full-size  tire  as  soon  as  you 
can.  See  the  storage  instructions  label  to  replace  your 
compact  spare  into  your  trunk  properly. 
I RETAINER -- 
Compact  Spare  Tire 
Although  the  compact  spare  tire  was  fully  inflated 
when  your  vehicle  was  new,  it can 
lose air  after  a  time. 
Check  the  inflation  pressure  regularly.  It  should  be 
60 psi (420 Wa). 
After  installing  the  compact  spare  on  your  vehicle, 
you  should  stop  as  soon  as  possible  and  make  sure 
your  spare  tire  is  correctly  inflated.  The  compact  spare  is made  to  perform  well  at  speeds  up  to 
65 mph 
(105 km/h) for  distances  up to 3,000 miles (5 000 km), 
so you  can  finish  your  trip  and  have  your  full-size  tire 
repaired  or  replaced  where  you  want.  Of course,  it’s  best 
to  replace  your  spare  with  a  full-size  tire 
as soon  as  you 
can.  Your 
spare will  last  longer  and  be  in  good  shape  in 
case  you  need  it again. 
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When the  compact  spare is installed,  don’t  take 
your  vehicle  through  an automatic  car wash  with 
guide  rails. 
The compact  spare can  get  caught  on 
the  rails.  That can  damage  the  tire and wheel, 
and  maybe  other parts 
of your  vehicle. 
Don’t  use  your  compact  spare  on  other  vehicles. 
And  don’t 
mix your  compact  spare  tire or wheel  with 
other  wheels  or  tires.  They  won’t  fit.  Keep  your  spare 
tire  and  its wheel  together. 
I NOTICE: 
Tire  chains  won’t  fit  your  compact  spare. Using 
them  can  damage  your  vehicle  and can  damage 
the  chains  too.  Don’t 
use tire  chains  on  your 
compact  spare. 
If You’re Stuck: In Sand, Mud, 
Ice or Snow 
What  you  don’t  want  to  do  when  your  vehicle is stuck  is 
to  spin  your  wheels  too fast. The  method  known  as 
“rocking”  can  help  you get  out  when  you’re  stuck,  but 
you  must  use  caution. 
1 
If you let  your  tires  spin  at high  speed,  they  can 
explode, 
and you  or others  could  be  injured.  And, 
the  transaxle  or other  parts 
of the  vehicle  can 
overheat.  That could  cause  an engine 
compartment  fire or other  damage.  When  you’re 
stuck,  spin  the  wheels  as little 
as possible.  Don’t 
spin  the  wheels  above 
35 mph (55 km/h) as  shown 
on the  speedometer. 
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Spinning  your  wheels  can  destroy  parts  of  your 
vehicle  as  well  as  the  tires.  If  you  spin  the  wheels 
too  fast  while  shifting  your  transaxle  back  and 
forth,  you  can  destroy  your  transaxle. 
For  information  about  using  tire chains  on  your  vehicle, 
see  “Tire  Chains”  in  the  Index. 
Rocking Your Vehicle To Get  It Out 
First, turn your  steering  wheel  left and  right.  That  will 
clear  the  area  around  your  front  wheels. 
You should 
turn  your  traction  control  system 
off. (See  “Traction 
Control  System”  in the  Index.)  Then shift back  and  forth 
between 
REVERSE (R) and  a forward  gear,  spinning  the 
wheels  as  little as  possible.  Release  the  accelerator  pedal 
while  you shift,  and  press  lightly  on  the  accelerator 
pedal  when  the  transaxle  is in  gear.  If  that  doesn’t  get 
you  out  after  a few  tries,  you  may  need  to  be  towed  out. 
If you  do  need  to  be  towed  out,  see “Towing  Your 
Vehicle”  in  the  Index. 
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Section 6 Service  and  Appearance  Care 
Here  you  will find information  about the care  of your  vehicle.  This  section  begins  with  service  and  fuel  informa\
tion, 
and  then  it shows  how  to check  important  fluid  and  lubricant  levels.  There  is  also  techn\
ical  information  about  your 
vehicle,  and  a  part  devoted  to  its appearance  care. 
6-2 
6-3 
6-5  6-5 
6-8 
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6-11 
6-15 
6-18 
6-22 
6-26 
6-28 
6-3 1 
6-32 
6-3 
8 
6-3 8 
Service 
Fuel 
Fuels  in  Foreign  Countries Filling  Your  Tank 
Filling  a  Portable  Fuel  Container 
Checking  Things  Under  the Hood 
Engine  Oil 
Air  Cleaner 
Automatic  Transaxle  Fluid 
Engine  Coolant 
Windshield  Washer  Fluid 
Brakes 
Battery 
Bulb  Replacement 
Windshield  Wiper  Blade  Replacement  Headlamp  Aiming  6-4 
1 
6-49 
6-49 
6-52 
6-54 
6-55 
6-55 
6-56 
6-57  6-57 
6-66 
6-66 
6-67 
6-67  Tires 
Appearance  Care 
Cleaning  the  Inside  of  Your  Vehicle 
Cleaning  the  Outside 
of Your  Vehicle 
Cleaning  Aluminum  or Chrome  Wheels 
(If  Equipped) 
Underbody  Maintenance 
Chemical  Paint  Spotting 
Appearance  Care  Materials  Chart 
Vehicle  Identification  Number  (VIN) 
Electrical  System  Replacement  Bulbs 
Capacities  and  Specifications 
Air  Conditioning  Refrigerants 
Normal  Maintenance  Replacement 
Parts   
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Your dealer  knows  your  vehicle  best  and  wants  you  to 
be  happy  with  it.  We  hope you’ll  go  to  your  dealer  for 
all  your  service  needs.  You’ll  get  genuine  GM  parts  and 
GM-trained  and  supported  service  people. 
We  hope  you’ll  want 
to keep  your  GM  vehicle  all  GM. 
Genuine  GM  parts  have  one of these  marks: 
Genuine 
Doing Your Own Service Work 
If you  want  to  do  some  of  your  own  service  work,  you’ll 
want 
to use  the proper  Cadillac  Service  Manual.  It tells 
you  much  more  about  how  to  service  your  vehicle  than 
this  manual  can. 
To order  the  proper  service  manual, 
see  “Service  and  Owner  Publications’’  in the Index. 
Your  vehicle  has 
an air  bag  system.  Before  attempting  to 
do  your  own  service  work,  see  “Servicing  Your Air 
Bag-Equipped  Vshicle”  in  the  Index. 
You  should  keep  a  record  with  all  parts  receipts  and 
list  the  mileage  and  the  date 
of any  service  work  you 
perform.  See “Maintenance  Record”  in  the  Maintenance 
Schedule  Booklet. 
6-2   
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Downloaded from www.Manualslib.com manuals search engine You can  be  injured and  your  vehicle  could  be 
damaged 
if you  try to  do  service  work  on a 
vehicle  without  knowing  enough  about it. 
0 Be sure  you  have  suffkient  knowledge, 
experience,  the proper replacement  parts 
and  tools  before  you attempt  any  vehicle 
maintenance  task. 
Be  sure to use  the  proper nuts,  bolts  and 
other  fasteners.  “English”  and “metric” 
fasteners  can  be  easily  confused. 
If you  use 
the  wrong  fasteners,  parts can later  break 
or 
fall off. You  could  be  hurt. 
Adding  Equipment  to  the  Outside of 
Your Vehicle 
Things  you  might  add  to the outside  of your  vehicle  can 
affect 
the airflow  around  it.  This  may  cause  wind  noise 
and 
affect windshield  washer  performance.  Check  with 
your  dealer  before  adding  equipment  to the outside 
of 
your  vehicle. 
Fuel 
Use  premium  udeaded gasoline  rated  at  91 octane  or 
higher  for best  performance.  You  may use  middle  grade 
or  regular  unleaded  gasolines,  but  your  vehicle  may  not 
accelerate  as  well. 
At  a  minimum,  the gasoline  you  use  should  meet 
specifications  ASTM  D4814  in the  United  States  and 
CGSB 
3.5-M93 in  Canada.  Improved  gasoline 
specifications  have  been  developed  by  the  American 
Automobile  Manufacturers  Association 
(AAMA) for 
better  vehicle  performance  and  engine  protection.  Gasolines  meeting  the AAMA  specification  could 
provide  improved  driveability  and  emission  control 
system  protection  compared  to  other gasolines. 
Be  sure  the posted  octane  for premium  is at 1,east  91 (at 
least  89  for middle  grade  and  87  for regular). 
If the 
octane  is less  than  87,  you  may  get  a  heavy  knocking 
noise  when  you  drive. 
If it’s bqd enough, it can  damage 
your  engine. 
If you’re  using  fuel rated  at  the recommended  octane  or 
higher  and  you  hear  heavy  knocking,  your  engine  needs 
service.  But  don’t  worry  if  you  hear  a  little pinging 
noise  when  you’re  accelerating  or  driving  up  a 
hill. 
That’s  normal,  and  you  don’t  have  to  buy  a  higher 
6-3