2003 CADILLAC ESCALADE EXT headlamp

The headlamp aiming devices are under the hood near
the headlamps.
If you believe your headlamps need horizontal (H)
(left/right) adjustment, follow the horizontal aiming
procedure. If you believe your headlamps need only
vertical (V) (up/down) adjustment, follow only the vertical
aiming procedure.
Adjustment screws can be turned with an E8 Torx
ž
socket or T15 Torxžscrewdriver.
Headlamp Horizontal Aiming
Turn the horizontal aiming screw (A) until the
indicator (B) is lined up with zero.
Once the horizontal aim is adjusted, then adjust the
vertical aim.
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Headlamp Vertical Aiming
Notice:Horizontal aiming must be performed
before making any adjustments to the vertical aim.
Adjusting the vertical aim ®rst 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 low beam lamp. Record this distance.3. At the wall or other ¯at 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 ¯at surface.
Notice:Do not cover a headlamp to improve beam
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 (V) 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.
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Bulb Replacement
SeeReplacement Bulbs on page 5-64for the proper
type of bulbs to use.
For any bulb changing procedure not listed in this
section, contact your dealer.
High Intensity Discharge (HID)
Lighting
{CAUTION:
The low beam high intensity discharge lighting
system operates at a very high voltage. If you
try to service any of the system components,
you could be seriously injured. Have your
dealer or a quali®ed technician service them.
After your vehicle's HID headlamp bulb has been
replaced, you may notice that the beam is a slightly
different shade than it was originally. This is normal.
Halogen Bulbs
{CAUTION:
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.
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Headlamps
A. Low-Beam Headlamp (HID)
B. Daytime Running Lamp
C. Sidemarker Lamp
D. High-Beam Headlamp
E. Front Parking and Turn Signal Lamp1. Open the hood of the vehicle.
2. Pry up the eight fastener plugs on the radiator
cover and pull the fasteners out.
3. Lift off the radiator cover.
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4. Pull the top left or right corner of the grill out so the
clips release. This will give you the needed
clearance for removing the headlamp assembly.5. Remove the horizontal pin from the headlamp
assembly by lifting the end of the pin upward
until it unsnaps and then pulling it toward the center
of the vehicle.
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6. Remove the vertical pin from the headlamp
assembly by turning the end of the pin away from
you until it unsnaps and then pulling it upward.
7. Remove the headlamp assembly by lifting it up and
then pulling it out and away from the front of the
vehicle.8. Disconnect the electrical connector from the lower
corner of the headlamp assembly. This will give you
better access to the headlamp assembly.
9. Remove the rubber,
circular-shaped bulb
cap of the affected bulb
from the headlamp
assembly.
10. Turn the bulb connector counterclockwise and
remove it with the old bulb from the headlamp
assembly.
11. Unplug the electrical connector from the old bulb.
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12. Plug in the electrical connector to the new bulb,
using care not to touch the bulb with your hands,
®ngers or anything damp or oily.
13. Place the connector with the new bulb into the
headlamp assembly and turn it clockwise until it
is tight.
14. Reinstall the rubber, circular-shaped bulb cap onto
the headlamp assembly.
15. Reconnect the electrical connector to the lower
corner of the headlamp assembly.
16. Place the headlamp assembly back into the vehicle,
being sure to align the lower locator tab with the
pocket on the vehicle (see arrow). Push the
headlamp assembly straight in and then down into
position.
17. Install the two pins and snap the ends into their
locked position.
18. Reinstall the grille and radiator cover by reversing
the removal procedure described previously.
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