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The 1998 Pontiac  Bonneville  Owner’s  Manual 
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Seats  and  Restraint  Systems 
This section  tells  you  how  to  use  your  seats  and  safety  belts  prop\
erly.  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  comfort  co\
ntrols  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  lubricants  to  use. 
Customer  Assistance  Information 
This  section  tells  you  how  to  contact  Pontiac  for  assistance  a\
nd  how to get  service  and  owner  publications. 
It  also  gives  you  information 
on “Reporting  Safety  Defects”  on  page 8-10. 
9-1 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. 
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If your  vehicle  ever  gets  into a lot of water -- such  as 
water  up  to the  carpeting  or higher 
-- or if  water  enters 
your vehicle  and soaks the  carpet,  the air bag  controller 
can be  soaked  and  ruined. If this ever  happens, and then 
you 
start your  vehicle,  the  damage  could  make  the air 
bags  inflate,  even  if  there’s  no  crash.  You would  have  to 
replace  the  air  bags 
as well  as  the  sensors  and  related 
parts. 
If your  vehicle  is  ever in a  flood,  or  if it’s  exposed 
to  water  that 
soaks the  carpet,  you  can  avoid  needless 
repair  costs  by  turning 
off the  vehicle  immediately. 
Don’t  let  anyone  start the  vehicle,  even  to tow  it, unless 
the  battery  cables  are  first  disconnected. 
Servicing  Your  Air  Bag-Equipped  Vehicle 
Air  bags  affect  how  your  vehicle  should  be  serviced. 
There  are 
parts of the  air  bag  system  in  several  places 
around  your  vehicle.  You don’t  want  the  system  to 
inflate  while  someone 
is working on your  vehicle.  Your 
dealer  and  the  Bonneville  Service  Manual  have 
information  about  servicing 
your vehicle and the  air  bag 
system. 
To purchase  a service  manual,  see  “Service  and 
Owner  Publications”  in  the  Index. 
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For up to 10 minutes  after the  ignition  key  is 
turned 
off and  the battery  is disconnected,  an air 
bag  can  still  inflate  during improper  service.  You 
can  be  injured 
if you are close to an  air  bag when 
it  inflates.  Avoid  yellow  connectors.  They  are 
probably  part 
of the air bag  system.  Be  sure to 
follow  proper  service  procedures,  and make  sure 
the  person  performing  work  for you 
is qualified 
to do so. 
The air bag  system  does  not  need  regular  maintenance. 
Center  Passenger  Position 
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Safety  Belt  Extender 
If  the  vehicle’s  safety  belt  will  fasten  around  you,  you 
should  use  it. 
But if  a  safety  belt  isn’t  long  enough  to  fasten,  your 
dealer  will  order  you 
an extender.  It’s  free. When  you  go 
in  to  order  it,  take  the  heaviest  coat  you  will  wear, 
so the 
extender  will  be long  enough  for  you.  The extender  will 
be  just  for  you,  and  just for  the  seat  in  your  vehicle  that 
you  choose.  Don’t  let  someone  else  use  it, and  use  it 
only  for  the  seat 
it is  made  to  fit.  To  wear it, just attach  it 
to  the  regular  safety  belt. 
Checking  Your  Restraint  Systems 
Now  and  then,  make  sure  the  safety  belt  reminder  light 
and  all your  belts,  buckles,  latch  plates,  retractors  and 
anchorages  are  working  properly.  Look  for any  other 
loose  or  damaged  safety  belt  system  parts. 
If you  see 
anything  that  might  keep  a  safety  belt  system  from 
doing  its job,  have it repaired. 
Tom or  frayed  safety  belts  may  not  protect  you  in  a 
crash.  They  can  rip apart  under  impact  forces. 
If a  belt  is 
torn  or frayed,  get a  new  one  right  away. 
Replacing  Restraint  System  Parts 
After a Crash 
If you’ve  had  a  crash,  do  you  need  new  belts? 
After  a  very  minor  collision,  nothing  may  be  necessary. 
But 
if the  belts  were  stretched, as they  would  be  if worn 
during  a  more  severe  crash,  then you need  new  belts. 
If belts  are  cut or damaged,  replace  them.  Collision 
damage  also  may  mean  you  will  need  to  have  safety  belt  or  seat  parts  repaired  or  replaced.  New  parts  and  repairs 
may  be  necessary  even  if  the belt  wasn’t  being  used  at 
the  time  of the  collision. 
If  your  seat  adjuster  won’t  work  after  a  crash,  the  special 
part  of the  safety  belt  that  goes  through  the seat  to the 
adjuster  may  need  to  be  replaced. 
If 
an air  bag  inflates,  you’ll  need  to  replace  air  bag 
system  parts.  See the  part  on the 
air bag  system  earlier  in 
this  section. 
Also look for any opened or broken air bag  covers,  and 
have  them  repaired  or  replaced.  (The 
air bag  system 
does  not  need  regular  maintenance.)  

If  you can’t  see  the HUD  image  when  the  ignition  is  on, 
check  to  see if: 
0 The headlamps  are  on. 
0 The HUD unit  is  covered. 
0 The  HUD  dimmer  control  is  adjusted  correctly. 
0 The HUD  image  is  adjusted  to  the proper  height. 
A fuse  in the  fuse  panel  may  be  blown.  See  “Fuses 
and  Circuit  Breakers”  in  the  Index. 
If the  HUD  image  is not  clear,  it could  be  too  bright. 
Move  the  HUD  dimmer  control  further  downward.  You 
may  need  to  clean  the  windshield  and 
HUD lens. 
Your windshield  is  part of the HUD system. If you ever 
have  to  have  a  new 
windshield, be sure to get one 
designed  for HUD. If you don’t,  the  HUD  image  may 
look  blurred 
and out of focus. 
Driver  Information  Center  (Option) 
DRIVER 
 
CHECK  OIL  LEVEL 
WABHER 
FLUID 
LOW COOLANT 
CHECK WE8 
HOOD  DOOR 
TRUNK 
AJAR 
MILES 
888888 
m 
LAMP 
MONITOR 
HI BEAM  HEAD 
PARK 
LAMP 
TURN  WONAL 
BACK UP TAIL 
BRAKE LAMP 
TRIP 
8 s 8 8.8 
If you have  the  Driver  Information  Center,  it gives  you 
important  safety  and  maintenance  facts. 
When you turn 
the  ignition  on,  the entire  center  lights  up  for  a  few 
seconds.  Then  it goes 
to work. 
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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; 
0 Shift into  a  gear;  and 
0 Release  the  parking  brake. 
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,  belt(s),  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 
Engine  Cooling  When  Ier Towing 
fight. 
- 
Your cooling  system  may  temporarily  overheat  during 
severe  operating  conditions.  See “Engine  Overheating” 
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 information, 
and  then  it 
shows how to  check  important  fluid  and  lubricant  levels.  There  is also technical  information about your 
vehicle, and  a  part  devoted  to its  appearance  care. 
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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 
Radiator  Pressure  Cap 
Power  Steering  Fluid 
Windshield  Washer  Fluid  Brakes 
Battery 
Bulb  Replacement Windshield  Wiper  Blade  Replacement 
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Tires 
Appearance  Care 
Cleaning  the  Inside  of  Your  Vehicle 
Care 
of Safety  Belts 
Cleaning  the  Outside  of  Your  Vehicle 
Cleaning  Aluminum  or  Chrome  Wheels 
(If Equipped) 
Sheet  Metal  Damage 
Appearance  Care  Materials  Chart 
Vehicle  Identification  Number 
(VIN) 
Electrical  System 
Replacement  Bulbs 
Capacities  and  Specifications 
Air  Conditioning  Refrigerants 
Engine  Specifications 
Normal  Maintenance  Replacement 
Parts 
Vehicle  Dimensions 
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Service 
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: 
C-pquine 
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Doing  Your  Own  Service Work 
If you want to do some of your  own  service  work,  you’ll 
want  to  use  the  proper  Pontiac  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  Vehicle”  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 Index. 
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/1 CAUTION: 
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  sufficient  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 
The  8th  digit  of your  vehicle  identification  number 
(VIN)  shows  the  code  letter  for your  engine.  You will 
find  the  VIN  at  the  top  left 
of your  instrument  panel. 
(See  .“Vehicle  Identification  Number” 
in the  Index.) 
If you  have  the 3800 engine (VIN Code K), use  regular 
unleaded gasoline  rated at 87 octane  or  higher. 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  octane  fuel  to  get 
rid of  pinging.  It’s  the  heavy,  constant 
knock  that  means  you  have  a  problem. 
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