CADILLAC CTS 2007 1.G Owners Manual

Notice:If the jumper cables are connected or
removed in the wrong order, electrical shorting
may occur and damage the vehicle. The repairs
would not be covered by your warranty. Always
connect and remove the jumper cables in the
correct order, making sure that the cables do
not touch each other or other metal.
A. Heavy, Unpainted Metal Engine Part or Remote
Negative (−) Terminal
B. Good Battery or Remote Positive (+) and
Remote Negative (−) Terminals
C. Dead Battery or Remote Positive (+) TerminalTo disconnect the jumper cables from both
vehicles, do the following:
1. Disconnect the black negative (−) cable from
the vehicle that had the dead battery.
2. Disconnect the black negative (−) cable from
the vehicle with the good battery.
3. Disconnect the red positive (+) cable from the
vehicle with the good battery.
4. Disconnect the red positive (+) cable from the
other vehicle.
Jumper Cable Removal
381

Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle
uid unless you suspect there is a leak or you hear
an unusual noise. A uid loss could indicate a
problem. Have it inspected and repaired.
How to Check Lubricant
To get an accurate reading, the vehicle should be
on a level surface.If the level is below the bottom of the ller plug
hole, located on the rear axle, you’ll need to add
some lubricant. Add enough lubricant to raise
the level to the bottom of the ller plug hole.
What to Use
Refer to the Maintenance Schedule to determine
what kind of lubricant to use. SeeRecommended
Fluids and Lubricants on page 473.
382

Headlamp Aiming
The vehicle has a visual optical headlamp aiming
system. The aim has been preset at the factory
and should need no further adjustment.
However, if the vehicle is damaged in an accident,
the headlamp aim may be affected and adjustment
may be necessary.
If oncoming vehicles ash their high beams at
you, this may also mean the vertical aim needs to
be adjusted.
It is recommended that the vehicle is taken to your
dealer/retailer for service if the headlamps need to
be re-aimed. It is possible however, to re-aim the
headlamps as described in the following procedure.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.
The vehicle must have all four tires on a level
surface which is level all the way to the wall.
The vehicle should be placed so it is
perpendicular to the wall.
The vehicle should not have any snow, ice, or
mud on it.
The vehicle should be fully assembled and all
other work stopped while headlamp aiming is
being performed.
The vehicle should be normally loaded with a
full tank of fuel and one person or 160 lbs
(75 kg) sitting on the driver’s seat.
Tires should be properly inated.
The spare tire is in its original location in the
vehicle.
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Headlamp aiming is done with the vehicle’s
low-beam headlamps. The high-beam headlamps
will be correctly aimed if the low-beam headlamps
are aimed properly.
To adjust the vertical aim, do the following:
1. Open the hood. SeeHood Release on
page 341for more information.
2. Locate the aim dot on the lens of the
low-beam headlamp.
3. Measure the distance from the ground to the
aim dot on the low-beam headlamp. Record
the distance.4. At the wall measure from the ground
upward (A) to the recorded distance
from Step 3 and mark it.
5. Draw or tape a horizontal line (B) the width of
the vehicle at the wall where it was marked it
Step 4.
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.
6. 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.
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7. Locate the vertical headlamp aiming screws,
which are under the hood near each headlamp
assembly.
The adjustment screw can be turned with
a 6 mm hex socket.8. Turn the vertical aiming screw until the
headlamp beam is aimed to the horizontal tape
line. If you turn it clockwise, it will raise the
beam and if you turn it counterclockwise, it will
lower the beam.
The top edge of the cut-off should be
positioned at the bottom edge of the horizontal
tape line.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal
tape line. The lamp on the left (A) shows the
correct headlamp aim. The lamp on the
right (B) shows the incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp.
Passenger’s Side Shown
385

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 389.
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
qualied technician service them.
Your vehicle has HID headlamps. 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.
386

Front Turn Signal and Fog Lamps
A. Turn Signal Lamp
B. Fog Lamp
To replace a turn signal or fog lamp bulb, do the
following:
1. Remove the protection shield located on the
underside of the front of the vehicle by pulling
out the push-pins located on the underside
of the protection shield.
2. Reach up behind the front bumper area from
under the vehicle to access the lamp housing.3. Remove the bulb socket from the housing by
turning the bulb socket one-quarter turn
counterclockwise.
4. Remove the electrical connector from the bulb
by lifting the two plastic clips.
5. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
6. Install a new bulb.
7. Reverse the steps to reinstall the lamp
assembly.
387

Taillamps, Turn Signal, Stoplamps
and Sidemarker Lamps
A. Taillamps and
Stoplamps
B. Turn Signal Lamp
C. Sidemarker Lamp
1. Open the trunk. SeeTrunk on page 104for
more information.
2. Remove the compact spare tire cover by
turning the wing nut counterclockwise.3. Remove the four convenience net wing nuts.
4. Pull the carpet back away from the body
of the vehicle on the side with the burned
out bulb.
5. Remove the two mounting screws from the
lamp assembly.
6. Pull out the lamp assembly to expose the bulb
sockets.
7. Turn the bulb socket one-quarter turn
counterclockwise and pull the bulb socket out
of the lamp reector.
8. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
9. Install a new bulb.
10. Reverse the steps to reinstall the lamp
assembly.
388

Back-Up and License Plate Lamps
A. Back-Up Lamps
B. License Plate Lamps
To replace a back-up or license plate bulb, do the
following:
1. Open the trunk. SeeTrunk on page 104for
more information.
2. Remove the cloth cover on the underside of
the trunk lid by pulling out the three push-pins
located on the underside of the trunk lid.
3. Remove the eight mounting nuts from the
underside of the trunk lid by turning the
nuts counterclockwise.4. Pull the lamp assembly away from the vehicle
to expose the bulb sockets.
5. Turn the bulb socket one-quarter turn
counterclockwise and pull the bulb and socket
out of the lamp reector.
6. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
7. Install a new bulb.
8. Reverse the steps to reinstall the lamp
assembly.Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up, Front/Rear Turn Signal,
Stoplamp and Taillamp3157K
Fog Lamp 9145
License Plate Lamp W5WLL
Rear Sidemarker Lamp W5WLL
For replacement bulbs not listed here, contact
your dealer/retailer.
389

Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeOwner Checks and Services
on page 469.
It is a good idea to clean or replace the wiper
blade assembly on a regular basis or when worn.
For proper windshield wiper blade length and
type, seeNormal Maintenance Replacement Parts
on page 475.
To replace the wiper blade assembly, do the
following:
1. Turn the ignition to ON with the engine off.
2. Turn on the windshield wipers and turn them
off again when the wipers are in the out-wipe
position. The driver’s side blade will be
straight up and down on the windshield.3. Pull the windshield wiper assembly away from
the windshield.
4. Lift the wiper blade assembly up so it is in
a T-shaped position. You should be able to
see a tab.
390