
The 1998 Buick Regal  Owner’s  Manual 
1-1 
2-1 
3-1 
4- 1 
5-1 
6- 1 
7-1 
8- 1 
9- 1 
Seats  and  Restraint  Systems 
This  section  tells  you  how  to  use  your  seats  and  safety  belts\
  properly.  It  also  explains the “SRS” system. 
Features  and  Controls 
This  section  explains  how  to  start  and  operate  your  vehicle. 
Comfort  Controls  and  Audio  Systems 
This  section  tells  you  how  to  adjust  the  ventilation  and  comfo\
rt  controls  and  how  to  operate  your  audio  system. 
Your Driving  and  the  Road 
Here  you’ll  find  helpful  information  and  tips  about  the  road\
  and  how  to  drive  under  different  conditions. 
Problems  on  the  Road 
This  section tells what  to  do if you have a problem  while  driving,  such  as a flat  tire  or  overheated  engine,  etc. 
Service  and  Appearance  Care 
Here  the  manual  tells  you  how  to  keep  your  vehicle  running  properly  and  looking  good. 
Maintenance  Schedule 
This  section  tells you  when  to  perform  vehicle  maintenance  and  what  fluids  and  lu\
bricants  to  use. 
Customer  Assistance  Information 
This  section  tells you  how to  contact  Buick  for  assistance  and  how  to  get  service  and  owner  publications. 
It also  gives you information  on  “Reporting  Safety  Defects”  on  page 8-8. 
Index 
Here’s  an alphabetical  listing of almost  every  subject  in  this  manual. You can  use it to  quickly  find 
something  you  want  to  read. 
i 
ProCarManuals.com 

Change  Oil Soon Light 
Your CHANGE  OIL  SOON 
light should come on as  a 
CHANGE OIL 
SOON 
bulb check when  you start 
the  engine. 
Security  Light 
SECURITY 
This  light  will come on 
when  you turn the  key 
to 
START and stay on until the 
vehicle  starts. 
If  this  light  stays  on for  about 
20 seconds  after you  turn 
on the  ignition,  have the oil changed. 
When to change your oil  also depends on  driving habits 
and  conditions  because 
they directly affect  engine speed, 
coolant  temperature  and vehicle  speed.  Because of this, 
the  CHANGE  OIL 
SOON light  may come  on as early as 
2,000 miles (3,200 km) or  less  for  harsh conditions. 
Also  see “Maintenance Schedule”  in the Index  for 
further  instructions  on when 
to change your  oil. 
To reset the  CHANGE  OIL  SOON  light,  see “CHANGE 
OIL SOON Light,  How to Reset”  in the  Index.  Also,  see 
“Oil  Life Monitor” 
in the  Index.  It 
will  also  flash  if your  ignition  key is  too  dirty or wet 
for  the  PASS-Key  I1 system to read the resistor pellet. 
See  “Pass-Key 
11” in the  Index. 
If  the resistor pellet  is damaged  or missing, the light will 
come 
on. 
If  you’re  ever  driving  and the SECURITY light comes 
on,  you  will  be able to restart your  engine 
if you turn it 
off.  Your  PASS-Key  I1 system, however,  is not working 
properly and must  be serviced  by your dealer.  Your 
vehicle  is not protected  by the PASS-Key  I1 system. 
2-73 
ProCarManuals.com 

Parking on Hills 0 Shift into  a  gear; and 
0 Release the parking brake. 
You  really should not park your vehicle,  with a trailer 
attached, on 
a hill. If something goes wrong, your rig 
could  start to move. People can  be injured, and both 
your vehicle and  the trailer can  be damaged. 
But  if you  ever  have  to park your rig on  a hill, here’s 
how  to do  it: 
1. Apply your regular brakes, but don’t shift  into 
PARK  (P) yet. 
2. Have someone  place chocks under the 
trailer’s wheels. 
3. When the wheel chocks  are  in place, release the 
regular brakes until  the chocks  absorb the load. 
4. Reapply the regular brakes. Then apply your parking 
brake, and shift  to 
PARK (P). 
5. Release the regular brakes. 
When You Are  Ready to Leave  After 
Parking 
on a Hill 
1. Apply your  regular brakes and hold the pedal down 
while you: 
Start your engine; 
2. Let  up on the brake pedal. 
3. Drive slowly until the trailer is  clear of the  chocks. 
4. Stop  and have someone  pick up and store the  chocks. 
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 especially  important  in  trailer 
operation are automatic transaxle fluid (don’t overfill), 
engine  oil, drive  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 this information 
before  you start your trip. 
Check periodically 
to see  that all hitch nuts and bolts 
are  tight. 
Engine  Cooling  When  Trailer  Towing 
Your  cooling  system may temporarily overheat during 
severe  operating conditions.  See “Engine Overheating” 
in the Index. 
4-40 
ProCarManuals.com 

then  start  the  vehicle. If the CHANGE OIL  SOON light 
comes back on, the system has not  reset. Repeat the 
procedure. 
(If you have a  driver  information  center, the 
system  may be reset  by depressing  the DIC 
RESET 
button for  five  seconds while viewing  the oil life  display 
on the DIC.  See “Driver  Information  Center”  in 
the  Index.) 
What  to Do with Used Oil 
Did  you know that used  engine  oil  contains  certain 
elements  that may  be unhealthy  for your skin and  could 
even  cause  cancer?  Don’t 
let used oil  stay  on your  skin 
for  very  long.  Clean your skin and nails  with  soap and 
water, 
or a good hand cleaner.  Wash or properly throw 
away  clothing  or  rags  containing  used engine  oil. (See 
the  manufacturer’s  warnings about the use and  disposal 
of oil products.) 
Used  oil  can  be a real  threat  to  the  environment. 
If you 
change your own  oil, be sure  to drain  all  free-flowing  oil 
from  the filter  before  disposal.  Don’t ever  dispose  of oil 
by  putting  it in  the  trash,  pouring  it  on  the  ground,  into 
sewers,  or  into  streams 
or bodies  of  water.  Instead, 
recycle  it by  taking  it  to  a place  that collects  used oil.  If 
you  have  a problem properly  disposing of your used  oil, 
ask  your dealer, a  service station or a local  recycling 
center  for  help. 
Air Cleaner 
To check  or  replace  the air 
filter, loosen  the wing nut 
on  the  air  duct  and lift 
up on 
the two clips  located  on the 
top  of the  filter  cover. 
Disconnect the  duct and 
reposition 
it while removing 
the  side  cover. 
Pull  out  the filter.  Be  sure 
to install the air  filter and 
install  the cover tightly when  you are finished. 
Refer 
to the Maintenance  Schedule to  determine when to 
replace  the  air  filter. 
See  “Scheduled Maintenance  Services’’  in the Index. 
6-17 
ProCarManuals.com 

How to Check  and Add Oil 
Check  oil only when  the  engine  is  cold.  Allow the 
engine 
to cool two  to three hours after running. 
~  ~ - 
A CAUTION: 
If you  remove  the  supercharger  oil  fill plug  while 
the  engine  is  hot,  pressure  may  cause  hot  oil  to 
blow  out 
of the  oil  fill hole.  You  may  be  burned. 
Do 
not remove  the  plug  until  the  engine cools. 
1. 
2. 
3. 
4. 
Clean  the area around  the  oil fill plug before 
removing  it. 
Remove the oil fill  plug using  a 
3/ 16 inch 
Allen wrench. 
The  oil level is correct when it  just reaches the 
bottom  of the threads  of the  inspection  hole. 
Replace the oil plug with the O-ring 
in place. Torque 
to 
88 lb-in  (10 N-m). 
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. 
Change both the fluid and filter  every 
50,000 miles 
(83 000 km) 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. 
0 In hilly or mountainous terrain. 
0 When  doing frequent trailer towing. 
0 Uses such as found  in taxi, police  or delivery service. 
If  you  do not use your vehicle under any  of these 
conditions,  the 
fluid and filter do not require  changing. 
See  “Scheduled Maintenance  Services” in the Index. 
6-20 
ProCarManuals.com 

The red RESET  button is 
located  inside  your 
instrument  panel fuse  block. 
(It’s the first button  in the 
top  row  of the  fuse  block.) 
The  LOW  TIRE  light will come 
on and flash  three 
times.  Then  it  will go off.  If the  light  doesn’t go off,  see 
your  dealer  for  service. 
The  system  completes  the  calibration  process  during  driving. 
The  system  normally  takes 
15 to 20 minutes  of driving in 
each of three  speed  ranges  to “learn”  tire  pressures. The 
speed  ranges  are 15 to 40 mph (25 to 65 km/h), 40 to 
65 mph (65 to 105 km/h) and  above 65 mph (105 km/h). 
When  learning  is  complete,  the  system  will alert you  after 
2-8 minutes if a  tire is 12 psi (83 kPa)  different  from the 
other 
three tires.  Detection  thresholds  may  be  higher and 
detection  times  may  be  longer on rough  roads,  curves  and 
at  high  speeds.  The system 
is not  capable of detection  at 
speeds  greater 
than 70 mph (1 10 km/h). 
Tire Inspection and  Rotation 
Tires  should  be rotated every 6,000 to 8,000 miles 
(10 000 to 13 000 km). Any time you notice unusual 
wear, rotate your tires 
as soon as possible  and check 
wheel  alignment.  Also  check for  damaged  tires or 
wheels.  See “When  It’s Time  for New  Tires” 
and 
“Wheel  Replacement”  later in this section  for 
more  information. 
The  purpose 
of regular  rotation  is to  achieve  more 
uniform  wear for 
all tires on the vehicle.  The first 
rotation is the most  important.  See “Scheduled 
Maintenance  Services” 
in the Index  for scheduled 
rotation  intervals. 
6-45 
ProCarManuals.com 

n 
Section 7 Maintenance  Schedule 
This  section  covers  the  maintenance  required  for your vehicle. Your vehicle  needs  these  services  to  retain its safety, 
dependability  and  emission  control  performance. 
7-2 
7-2 
7-3 
7-4 
7-4 
7-  14  7-  14 
7-  14 
7-  15 
7-  15 
Introduction 
Your  Vehicle  and the Envlronment 
How  This  Section 
is Organized 
Part 
A: Scheduled  Maintenance  Servlces 
Using  Your Maintenance  Schedule 
Part 
B: Owner  Checks  and Services 
At  Each  Fuel  Fill 
At  Least  Once  a Month 
At  Least  Twice a Year 
At  Least  Once  a Year 
7-18 
7-  18 
7-18 
7-18 
7-18  7-18 
7-19 
7-20 Part C: Periodic  Maintenance  Inspections 
Steering,  Suspension  and Front  Drive  Axle 
Boot and  Seal Inspection 
Exhaust  System  Inspection 
Engine  Cooling  System  Inspection 
Throttle  System  Inspection 
Brake  System  Inspection 
Part  D:  Recommended  Fluids  and Lubricants 
Part 
E: Maintenance  Record 
7-1 
ProCarManuals.com 

How This  Section is Organized 
The remainder  of this  section  is divided  into  five  parts: 
“Part A: Scheduled  Maintenance  Services” shows 
what  to  have  done  and  how often.  Some  of these 
services  can  be complex, 
so unless  you are technically 
qualified  and have  the  necessary  equipment,  you should 
let  your  dealer’s  service  department  or  another  qualified 
service  center  do  these  jobs. 
I 
I 
Performing  maintenance  work on a vehicle  can 
be  dangerous.  In  trying  to  do  some jobs,  you can 
be  seriously  injured. 
Do your own maintenance 
work only 
if you  have  the  required  know-how 
and  the  proper  tools and  equipment  for  the  job. 
If you have any doubt,  have a qualified 
technician  do  the work. 
If you  are skilled  enough to do some work on  your 
vehicle, 
you will probably  want  to get the  service 
information.  See “Service  and Owner  Publications” 
in  the  Index. 
“Part B: Owner  Checks  and Services” tells 
you  what  should  be checked  and when. It  also  explains 
what  you can easily  do  to  help keep your vehicle in 
good  condition. 
“Part C: Periodic  Maintenance  Inspections” 
explains  important inspections that your dealer’s  service 
department  or  another  qualified service  center 
should  perform. 
“Part D: Recommended  Fluids and  Lubricants” 
lists  some  recommended  products to help keep your 
vehicle properly  maintained.  These products,  or their 
equivalents,  should be used whether  you do the work 
yourself 
or have it  done. 
“Part E: Maintenance  Record” provides a place 
for  you 
to record  the  maintenance  performed on your 
vehicle.  Whenever  any maintenance  is performed,  be 
sure  to  write 
it down in this part.  This  will help you 
determine  when your next maintenance  should  be done. 
In  addition, 
it is a good  idea to keep your maintenance 
receipts.  They  may be needed  to qualify your vehicle  for 
warranty repairs. 
7-3 
ProCarManuals.com