CADILLAC DEVILLE 1998 7.G Owners Manual
Page 271 of 386
Downloaded from www.Manualslib.com manuals search engine 2. Then  keep  turning  the  cap,  but  now  push down as 
you turn it. Remove  the  pressure  cap. 
3. Then fill the  coolant  surge tar& with  the  proper 
mixture,  up  to  the  base 
of the  filler  neck. 
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Page 272 of 386
Downloaded from www.Manualslib.com manuals search engine 4. With the coolant  surge  tank  pressure  cap off, start  the 
engine  and  let  it run  until 
you can  feel  the  upper 
radiator  hose  getting  hot.  Watch  out  for the engine 
cooling  fans. 
By this  time,  the  coolant  level  inside  the  coolant 
surge  tank  may  be  lower. 
If the  level  is lower,  add 
more 
of the  proper  mixture  to  the  coolant  surge  tank 
until  the  level  reaches  about 
2.5 inches (6.4 cm) 
below 
the base  of the  filler  neck. 
5. Then  replace  the pressure  cap.  Be  sure  the  arrows 
on 
the pressure  cap  line  up  like  this. 
Start  the  engine  and  allow  it  to  warm  up.  If the 
CHECK 
COOLANT  LEVEL  message  does  not  appear  on  the 
Driver  Information  Center,  coolant 
is at  the  proper  fill 
level. 
If a  CHECK COOLANT LEVEL  message  does 
appear,  repeat  Steps 
1 through 3 or  see  your  dealer.   
Page 273 of 386
Downloaded from www.Manualslib.com manuals search engine If a Tire Goes Flat Changing a Flat Tire 
It’s unusual for a  tire  to  “blow  out”  while  you’re  driving, 
especially  if  you  maintain  your  tires  properly.  If  air  goes 
out  of a  tire,  it’s  much  more  likely  to  leak  out  slowly. 
But  if  you  should  ever  have  a  “blowout,”  here  are  a  few\
 
tips  about  what  to  expect 
and what  to  do: 
If a  front  tire fails, the flat tire will  create  a  drag  that 
pulls  the  vehicle  toward  that  side.  Take  your  foot 
off the 
accelerator  pedal  and  grip the  steering  wheel  firmly. 
Steer  to  maintain  lane  position,  and  then  gently  brake  to 
a  stop  well  out  of the  traffic  lane. 
A rear  blowout,  particularly  on  a  curve,  acts  much  like  a 
skid  and  may  require  the same correction  you’d  use  in  a 
skid. In  any  rear  blowout,  remove  your  foot  from the 
accelerator  pedal.  Get  the  vehicle  under  control  by 
steering  the  way  you  want  the  vehicle  to  go. 
It may  be 
very  bumpy  and  noisy,  but  you  can  still steer.  Gently 
brake  to  a  stop 
-- well off the  road if possible. 
If  a  tire  goes  flat,  the  next  part  shows  how  to  use  your 
jacking  equipment  to  change  a  flat tire  safely.  If  a  tire  goes 
flat, avoid  further  tire  and  wheel  damage 
by  driving  slowly  to  a  level  place.  Turn  on  your  hazard 
warning  flashers. 
Changing 
a tire  can  cause an injury. The vehicle 
can  slip 
off the  jack  and  roll  over you or other 
people.  You and they  could  be  badly  injured. 
Find 
a level  place  to  change  your  tire.  To help 
prevent  the  vehicle from moving: 
1. Put  the  shift  lever in PARK (P). 
2. Set  the  parking  brake firmly. 
3. lhrn off the  engine. 
To be even  more  certain  the  vehicle won’t  move, 
you  can put blocks  at the  front  and  rear  of the 
tire  farthest  away  from  the  one  being  changed. 
That  would  be  the  tire 
on the  other side of the 
vehicle,  at the  opposite end. 
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Page 274 of 386
Downloaded from www.Manualslib.com manuals search engine Removing  the  Spare  Tire and Tools 
The equipment  you’ll  need is in the trunk.  Pull  the 
carpeting  from  the  floor 
of the  trunk. Turn the  retainer 
(center  dial)  on  the  compact  spare  cover  to the left  to 
The  following  steps  will  tell  you  how  to  use  the jack  and 
change  a  tire.  remove 
it. Lift and  remove  the  cover.  (See  “Compact 
Spare  Tire’’ later in  this  section  for more  information 
about  the compact  spare.) 
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Page 275 of 386
Downloaded from www.Manualslib.com manuals search engine Lift up the  tire to remove  it from  the  trunk.  Turn  the  nut  holding  the 
jack and  wheel  wrench to the 
left  and  remove 
it. Then  remove  the  jack and  wrench. 
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Page 276 of 386
Downloaded from www.Manualslib.com manuals search engine Removing  the  Wheel  Cover 
‘. 
The tools  you’ll  be  using  include  the  jack (A) and the 
wheel  wrench 
(B). 
There  is a center  wheel  cover  on the  aluminum  wheel. 
Using  the flat  end.of the wheel  wrench,  gently 
pry the 
wheel  cover 
off. Be  careful  not  to  scratch  the  aluminum 
wheel  edge  and  don’t 
try to  remove it with  your  hands. 
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Page 277 of 386
Downloaded from www.Manualslib.com manuals search engine Removing  the Flat Tire and Installing the 
Spare Tire 
1. Using  the  wheel  wrench,  loosen  all  the  wheel  nuts. 
Don’t  remove  them  yet. 
2. Turn  the jack  handle to the  right  to raise  the  jack lift 
head 
a few  inches. 
A. CAUTION: I 
Getting  under a vehicle when it is jacked  up is 
dangerous. If the vehicle  slips off the  jack, you 
could  be  badly  injured  or killed.  Never  get under 
a vehicle  when it is supported  only by a  jack. 
A CAUTION: 
Raising  your  vehicle with the  jack  improperly 
positioned  can damage  the  vehicle and even 
make  the  vehicle  fall. 
To help  avoid  personal 
injury  and  vehicle damage,  be  sure  to 
fit the  jack 
lift  head  into  the  proper  location  before raising 
the  vehicle. 
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Page 278 of 386
Downloaded from www.Manualslib.com manuals search engine 10.5 INCHES 5.8 INCHES 
(270 mm) (150 mm) 
1 
3. Position  the jack under  the vehicle  and  raise  the  jack 
lift  head  until  it fits  firmly  into  the  notch  in the 
vehicle’s  frame  nearest  the flat 
tire. 
Put the compact  spare  tire  near you. 
right.  Raise  the  vehicle  far enough off the  ground  for 
the  spare  tire to fit  under  the vehicle. 
4. Raise  the vehicle  by  turning  the  jack handle  to  the 
5. Remove  all  wheel  nuts  and  take off the flat  tire. 
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Page 279 of 386
Downloaded from www.Manualslib.com manuals search engine 6. Remove  any  rust or dirt 
from the  wheel  bolts, 
mounting 
surfaces and 
spare  wheel. 
- 
Rust  or  dirt  on  the  wheel, or on  the  parts  to 
which 
it is  fastened,  can  make  the  wheel nuts 
become  loose  after 
a time. The wheel  could come 
off  and  cause  an accident.  When  you change 
a 
wheel,  remove  any  rust  or dirt from  the places 
where  the wheel  attaches  to  the  vehicle. In  an 
emergency,  you can use 
a cloth  or a paper  towel 
to  do  this; 
but be  sure  to use a scraper  or  wire 
brush  later, 
if you  need to,  to  get  all  the  rust  or 
dirt off. 
A CAJTION: 
Never use oil or grease  on  studs or nuts. If you 
do,  the  nuts  might  come  loose.  Your  wheel  could 
fall 
off, causing a serious  accident. 
7. Replace  the  wheel  nuts 
with  the  rounded  end 
of 
the nuts  toward the 
wheel.  Tighten  each  nut 
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Page 280 of 386
Downloaded from www.Manualslib.com manuals search engine 8. Lower the vehicle  by  turning  the  jack handle to the 
left.  Lower  the  jack completely. 
9. Tighten  the  wheel  nuts 
firmly  in  a crisscross 
sequence 
as shown. 
A 3 
I A CAUTIO1 ~ 
Incorrect  wheel nuts or improperly  tightened 
wheel  nuts can  cause  the wheel  to become loose 
and  even come  off. This  could  lead  to  an accident. 
Be  sure  to  use  the  correct  wheel nuts. 
If you have 
to  replace  them,  be  sure 
to get new GM original 
equipment  wheel nuts. 
Stop  somewhere  as  soon 
as you  can  and  have  the 
nuts  tightened  with 
a torque  wrench  to 100 lb-ft 
(140 Nom). 
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