PONTIAC BONNEVILLE 2003 Owners Manual

Headlamp Aiming
Your vehicle has a visual optical headlamp aiming
system equipped with horizontal aim indicators. The aim
has been preset at the factory and should need no
further adjustment. This is true even though your
horizontal aim indicators may not fall exactly on
the
“0” (zero) marks on their scales.
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment to the
low beam
may be necessary
if it is difficult to see lane markers
(for horizontal aim), or
if oncoming drivers flash
their high beams at you (for vertical aim).
If you believe
your headlamps need to be re-aimed, we recommend
that you take your vehicle to your dealer for service.
However, it is possible for you to re-aim your headlamps
as described in the following procedure.
Notice: To make sure your headlamps are aimed
properly, read all the instructions before beginning.
Failure
to follow these instructions could cause
damage to headlamp parts.
The vehicle should be properly prepared as follows:
The vehicle should be placed so the headlamps are
25 ft. (7.6 m) from a light colored wall or other flat
surface.
The vehicle must have all four tires on a perfectly
level surface which is level all the way to the wall
or other flat surface.
The vehicle should be placed so it is perpendicular
to the wall or other flat surface.
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0 The vehicle should not have any snow, ice or mud
attached to it.
* The vehicle should be fully assembled and all other
work stopped while headlamp aiming is being done.
0 The vehicle should be normally loaded with a
full tank of fuel and one person or
160 Ibs. (75 kg)
on the driver’s seat.
Tires should be properly inflated.
Headlamp aiming is done with the vehicle low beam
lamps. The high beam lamps will be correctly aimed
if
the low beam lamps are aimed properly. The
headlamp aiming devices are under the hood near
the headlamps.
If you believe your headlamps need horizontal (lefthight)
adjustment, follow the horizontal aiming procedure.
If you believe your headlamps need only vertical
procedure.
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Adjustment screws can be turned with an E8 Torx@
socket or
Ti 5 Torx@ screwdriver.
5-53

Headlamp Horizontal Aiming
Turn the horizontal aiming screw (A) until the
indicator
(B) is lined up with zero.
B
A
Once the horizontal aim is adjusted, then adjust the
vertical aim.
Headlamp Vertical Aiming
Notice: Horizontal aiming must be performed
before making any adjustments to the vertical aim.
Adjusting the vertical aim first will result in an incorrect headlamp aim.
1. Find the aim dot on the lens of the low
beam lamps.
2. Measure the distance from the ground to the aim
dot on each lamp;
if left low beam, subtract two
inches. Record this distance.
3. At the wall or other flat surface, measure from the
ground upward the recorded distance from Step
2
and draw or tape a horizontal line the width of
the vehicle.
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4. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being aimed. This should allow only
the beam of light from the headlamp being
aimed to be seen on the flat surface.
Norice: DO noi cover a heariiarnp iu iii-lpi-uie 5386~
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp. 5.
Turn the vertical aiming
screw
(C) until the
headlamp beam is aimed to the
horizontal tape line.
The top edge of
the cut-off should be
positioned at the bottom edge of the
horizontal tape line.
6. Repeat Steps
4 and 5 for the opposite headlamp.
5-55

Bulb Replacement
For the type of bulb to use, see Replacement Bulbs on
page
5-60.
For any bulb changing procedure not listed in this
section, contact your dealer.
Halogen Bulbs
Headlamps
Halogen bulbs have pressurized gas inside
and can burst
if you drop or scratch the bulb.
You or others could be injured. Be sure
to read
and
follow the instructions on the bulb
package.
1. Reach behind the headlamp assembly, push in and
turn the bulb assembly counterclockwise to remove
the bulb assembly from the headlamp assembly.
5-56

Front Turn Signal and Parking
Lamps
2. Lift the tabs to remove the bulb from the assembly.
3. Replace the bulb. Push the bulb assembly in
and turn it clockwise to install the bulb assembly into
the headlamp assembly.
1. Remove the two bolts.
2. Use a larqe screwdriver by the outside mount to
separate the lamp assembly from the outboard
snap mounting pin. Slide the headlamp assembly
outward and lift
it out.
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3. ~iSCOnneCt the wiring harness from the headlamp
assembly. 4.
5.
Tip the headlamp assembly and while pressing the
release, turn the bulb and socket counterclockwise
to remove them.
Replace the bulb and reinstall the socket. Then
reconnect the wiring harness to the lamp assembly.
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6. Slide the lamp assembly back into place by lining
up the track on the bottom
of the assembly with
the guide on the vehicle. Then connect the outboard
snap and secure the lamp assembly with the
two bolts.
C. Taillamp
D. PaiVBrake Lamp
1. Open the trunk. Turn the screws located inside of
the trunk counterclockwise and remove them.
2. Remove the plastic trim piece from the trunk.
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3. Pull the carpeting away from the rear corner
of the trunk.
4.
5.
6.
7.
A
Remove the three nuts holding the lamp in place
and remove the lamp assembly.
While pressing the release, turn the bulb socket
assembly counterclockwise to remove it from the
lamp assembly.
Pull the bulb straight out of the socket.
Replace the bulb and reverse Steps 1 through
6 to
reinstall the lamp assembly.
Replacement Bulbs
-
Exterior Lamp I Bulb Number
Front
I Headlamp I
-High Beam
~
9005
Low Beam 9006
Parkingnurn Lamps I 3157
Rear
Taillamps
Back-up Lamps 3057
3057
StoDlamDs 3057
Turn
I 3157
For any bulb not listed here contact Vour dealer.
5-60

Windshield Wiper Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear or cracking. See
Part B:
Owner Checks and Services on page 6-18 for more
information.
For the proper windshield wiper blade replacement
length and type, see
Normal Maintenance Replacement
Parts on page
5- 101.
To replace the wiper blade assembly:
the vertically-locked position.
1. Lift the wiper up from the windshield and set into
2. Press the tab that holds the wiper blade to the arm.
3. Slide the blade down and off the arm.
4. Slide in the new blade and snap into place.
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