Page 229 of 386
Downloaded from www.Manualslib.com manuals search engine - Maintenance when Trailer Towing 
Your vehicle  will need  service  more often when you’re  pulling a  trailer. 
See  the  Maintenance  Schedule  for  more  on  this. Things that  are 
(don’t  overfill),  engine oil, axle  lubricant,  belt,  cooling system, and brake 
adjustment.  Each 
of these  is covered  in this  manual,  and  the  Index will 
__- help you find  them  quickly. If you’re  trailering,  it’s a good  idea  to  review 
these  sections  before you start  your  trip. 
Check periodically  to see  that  all hitch  nuts  and  bolts are tight. 
rc-.- especially  important  in trailer  operation  are  automatic  transmission fluid 
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        Page 279 of 386
Downloaded from www.Manualslib.com manuals search engine AIR CLEAlVER 
Refer  to  the 
Maintenance  Schedule 
to determine when to 
replace  the air  filter. 
.- See  “Scheduled  Maintenance  Services” in the  Index. 
c- A CAUTION: 
Operating  the  engine with the air cleaner  off can  cause  you or 
others  to  be burned.  The 
air cleaner  not only  cleans  the  air,  it 
engine backfires,  you  could  be burned. Don’t drive with it off, 
and  be careful  working  on the  engine  with the air cleaner 
off. 
~ stops  flame  if the  engine  backfires. If it isn’t  there,  and  the 
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Downloaded from www.Manualslib.com manuals search engine AUTOMATIC TMSMISSION  FLUID 
When  to  Check  and  Change: 
A good time to check  your  automatic transmission  fluid  level  is when  the 
engine  oil  is changed.  Refer  to  the Maintenance  Schedule to  determine 
cpr 
when to change  your  fluid.  See “Scheduled  Maintenance  Services’’  in the 
Index. -I 
How to  Check 
BeC’%’uSe  this operation  can be a little  difficult,  you  may  choose to have 
this  done  at  a Cadillac  dealership  Service Department. 
r IYI 
”I If  you do it yourself,  be  sure  to  follow  all the instructions  here,  or you 
could  get a false  reading on  the dipstick. 
p_ 
NOTICE: 
I 
Too much  or  too  little fluid can damage  your  transmission. 
much  can mean  that  some  of  the  fluid  could  come  out  and  fall 
on  hot  engine  parts, starting 
a fire.  Be  sure  to  get an accurate 
reading  if  you  check 
your transmission fluid. I 
l- 
Wait  at least  30 minutes  before checking  the transmission  fluid  level  if 
you  have  been  driving: 
0 When  outside  temperatures  are above 90” F (32” C). 
n !‘ b 
0 At high  speed  for  quite  a while. 
0 In heavy  traffic -- especially  in hot  weather. 
0 While  pulling  a trailer. 
To  get  the  right  reading,  the fluid  should  be  at normal  operating 
temperature,  which  is 
180°F to  200°F  (82°C  to 93OC). 
To check transmission  fluid hot: Get  the  vehicle warmed  up by driving 
about 
15 miles (24 km)  when  outside  temperatures  are  above 50°F 
(10°C). If it’s colder  than 50°F (lO°C), drive the vehicle  in “D” (3rd 
Gear)  until the engine  temperature  gage  moves and  then remains steady 
- 
for  ten minutes.  Then follow  the  hot  check procedures. t3 
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1 <- 1 
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Downloaded from www.Manualslib.com manuals search engine 3. Check both sides 
of the dipstick, 
and  read  the 
lower  level.  The 
fluid  level must  be 
in the  COLD  area 
for  a cold  check  or 
in the HOT area 
or  cross-hatched  area  for  a  hot 
check. 
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4. If  the  fluid  level  is where it should  be,  push the dipstick back in  all the 
way. 
How to Add Fluid: 
Refer  to  the  Maintenance  Schedule  to  determine  what kind of 
transmission 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 
up to  the COLD area  for  a  cold check  or  the HOT area  for  a  hot 
check.  It doesn’t  take much  fluid, generally less  than  a 
int. Don’t overfill. 
We  recommend  you use  only  fluid labeled 
DEXRON IIE, because  fluids 
with  that  label  are  made especially  for you  automatic  transmission. 
Damage  caused 
by fluid  other  than  DEXRON@IIE is not covered  by 
your  new vehicle  warranty. 
8 
0 After  adding  fluid,  recheck the fluid  level  as  described  under “How to 
Check.” 
0 When  the  correct  fluid level is obtained,  push the dipstick  back  in  all 
the  way. 
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Downloaded from www.Manualslib.com manuals search engine r REARAXLE 
1 
When  to  Check and Change  Lubricant: 
Refer  to  the  Maintenance  Schedule  to  determine how often  to check  the 
lubricant  and  when to change it.  See  “Periodic  Maintenance  Inspections” 
in  the  Index. 
How to  Check  Lubricant: 
If the  level  is  below  the  bottom of the filler  plug hole,  you’ll  need  to  add 
some  lubricant.  Add enough  lubricant  to raise  the level  to  the  bottom  of 
What  to  Use: 
~ the filler plug  hole. 
Standard  Differential 
Use  Axle  Lubricant  (GM Part 
No. 1052271)  or SAE 8OW-90 GL-5 gear 
lubricant. 
Limited-Slip  Differential 
To add  lubricant  when the level  is  low,  use Axle  Lubricant (GM Part No. 
1052271)  or SAE 8OW-90 GL-5  gear  lubricant. To completely refill  after 
draining,  add 
4 ounces (1 18 ml) of Limited-Slip  Differential  Lubricant 
Additive  (GM  Part 
No. 1052358).  Then fill to  the  bottom  of the  filler  plug 
hole  with  Axle  Lubricant  (GM Part 
No. 1052271)  or  SAE 8OW-90  GL-5 
~ gear  lubricant. 
ENGINE COOLANT 
The  proper  coolant for your Cadillac  will: 
Give freezing  protection down to  -34°F  (-37’ C) . 
_- Give boiling  protection up  to  262°F  (128°C) . 
0 Protect against rust  and  corrosion. 
__ 0 Help  keep  the  proper  engine  temperature. 
Let the warning lights  work as they should. 
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 
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        Page 287 of 386
Downloaded from www.Manualslib.com manuals search engine - 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 
_q fluid  level on  the  dipstick. 
0 
0 When  the  engine 
compartment  is 
hot,  the level 
should  be  at  the 
“HOT” mark. 
When  the  engine 
compartment  is 
cool,  the level 
should  be  at  the 
“FULL COLD” 
mark. 
- What to Add: 
Refer to  the  Maintenance  Schedule  to determine  what kind of fluid to 
- use. See  “Recommended  Fluids and  Lubricants”  in the  Index. 
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Downloaded from www.Manualslib.com manuals search engine - 
L.. i 
Refer to  the  Maintenance  Schedule  to  determine when to check your 
brake  fluid. See “Periodic  Maintenance  Inspections”  in the  Index. 
To Check  Brake Fluid: 
I 
You  can check  the brake  fluid without taking off the cap.  Just look  at  the 
windows  on  the  brake  fluid reservoir.  The fluid  levels  should be above 
“MIN.” If they aren’t, have your  brake system  checked to see if there is a % 
leak. 
7- 
After  work  is  done  on  the  brake  hydraulic system, make  sure  the  levels 
are  above  “MIN”  and  below the  top 
of each window. 
What to Add: 
When  you do  need  brake  fluid, use only DOT-3 brake fluid -- such as 
Delco  Supreme 
11 @ (GM Part No. 1052535). Use  new brake  fluid from  a 
sealed  container  only. 
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        Page 309 of 386

Downloaded from www.Manualslib.com manuals search engine P Tire Inspection and Rotation 
To make your  tires  last  longer, have them inspected and  rotated  at  the 
mileages  recommended  in the  Maintenance  Schedule. See “Scheduled 
- Maintenance  Services”  in the Index.  Use this rotation  pattern. 
FRONT FRONT 
with  compact  spare 
with full size  spare 
cs 
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After  the tires  have  been  rotated,  adjust the  front  and rear  inflation 
pressure  as  shown  on the  Tire-Loading  Information label. Make  certain 
that  all wheel  nuts  are  properly tightened.  See  “Wheel  Nut Torque” in the 
Index. 
A CAUTION: 
Rust  or  dirt  on a wheel, or on  the  parts  to  which  it is  fastened, 
can  make  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 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. (See “Changing a Flat Tire” 
in  the  Index.) 
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