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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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226 
Service & Appearance  Care 
Engine  Specifications 
VIN Engine Code ........................................... 
Type ................................................................ 
Displacement .................................................. 
Compression Ratio .......... ....... .. .. .. ..... ............. 
Firing  Order ...................... .. ....................... ... .. 
Thermostat  Temperature  Specification . . . . . . . . . 
31 00 V6 Engine 
D 
V6 
3.1 Liters 
8.5:1 
1-2-3-4-5-6 
195°F  (91°C) 
3800 V6 Engine 
1 
V6 
3.8 Liters 
9.0: 
1 
1-6-5-4-3-2 
195°F  (91°C) 
Normal  Maintenance  Replacement Parts 
Air Cleaner Element ....................................... AC Type  A-773C  AC Type  A-974C 
Engine 
Oil Filter ............................................. AC  Type  PF-51  AC Type  PF-47 
PCV  Valve 
................. .. ................... .... ... . . . ...... AC  Type  CV-789C  AC  Type  CV-892C 
Spark  Plugs 
...... . , . . . . . . . . . . . . .. . . . . . . .. . . . . . . , . . . . . . . . . . . . . . . . AC Type  oR43TS  AC  Type  41-600 
Remote  Lock Control Batteries  (2) 
............... DL 2016  DL 2016 
Gap:  0.045 
inch (1.14 
mm) Gap:  0.060 inch  (1.52 mm) 
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6. Transaxle  Service - Change both 
the  fluid  and filter  every 
15,000 miles 
(25 000 ltm) if the vehicle  is mainly 
driven  under  one  or more of these 
conditions: 
In  heavy  city  traffic where  the 
outside  temperature  regularly 
reaches 
90°F (32°C) or higher. 
In  hilly  or mountainous  terrain. 
When doing  frequent trailer  towing. 
Uses such  as  found  in  taxi, police 
car  or delivery  service. 
If  you  do  not  use your vehicle  under 
any  of these  conditions,  change both 
the 
fluid and  filter  every 100,000 miles 
(166 000 ltm) . 
7. Spark  Plug Replacement::' - 
Replace  spark plugs with the proper 
type. See 
Replacement  Parts in the 
Index. 
8. Spark  Plug  Wire  Inspection''- 
Inspect for  burns,  cracks  or other 
damage. Check  the  boot fit at the 
distributor  or coils  and at  the  spark 
plugs.  Replace  wires 
as needed. 
9. Exhaust  Gas  Recirculation  (EGR) 
System  1nspection':t 
- Conduct 
the 
EGR system service  as described 
in  the  service  manual. 
To purchase  a 
service  manual,  see 
Service 
Publications 
in  the Index. 
IO. Air  Cleaner  Filter  Replacement+- 
Replace  every  30,000 miles 
(50 000 ltm) or more often  under 
dusty  conditions. 
Ask your dealer 
for  the  proper  replacement  intervals 
for  your driving  conditions. 
11. Air Cleaner  Inspection''? - Inspect 
all  hoses  and  ducts  for  proper 
hookup.  Make sure  the  valve works 
properly. 
1nspection';:t - Inspect  fuel tank, 
cap  and  lines  for damage 
or leaks. 
Inspect  fuel cap gasket for  an even 
filler  neck  imprint  or  any damage. 
Replace  parts  as  needed.  Periodic 
replacement  of the  fuel  filter 
is not 
required. 
12. Fuel  Tank,  Cap  and  Lines 
13. Engine  Timing  and  Distributor 
Check 
(3100 Code D engine 
only)'xt 
- Adjust  the timing  to  the 
underhood  label specifications. 
Inspect  the inside  and  outside 
of the 
distributor  cap  and  rotor  for cracks, 
carbon  tracking  and  corrosion. 
Clean  or replace  as needed. 
NOTE: To determine  your engine's 
displacement  and  code, see 
Engine 
Identification 
in  the Index. 
': = An  Enzission  Control Service. 
t = The U.S. Environmental  Protection Agency 
or the  California  Air Resources  Boa1.d has 
determined  that  the  failure 
to pelform  this 
maintenance  item  will 
not nullify the 
emission  warranty 
or limit recall  liability 
prior 
to fhe  completion of ~~ehicle  useful  life. 
General 
Motors: however,  urges that all 
recornmended  maintenance services be 
performed  at the  indicated  intervals and  the 
maintenance  be  recorded 
in "Section E: 
Maintenance Record." 
239 
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