ignition CADILLAC CTS 2003 1.G Repair Manual

3-21
Cassette Tape Messages
If an error occurs while trying to play a cassette tape, it
could be that one of the following has occurred:

The cassette tape is tight and the cassette player
cannot turn the hubs of the tape. Hold the cassette
tape with the open end down and try turning the right
hub counterclockwise with a pencil. Flip the tape
over and repeat. If the hubs do not turn easily, your
cassette tape may be damaged and should not be
used in the player. Try a new tape to be sure your
player is working properly.

The cassette tape is broken. Check to see if your tape
is broken. Try a new tape.
CLEAN TAPE: If this message appears on the display,
the cassette tape player needs to be cleaned. It will still
play tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See ªCare of
Your Cassette Tape Playerº in the Index.
If any error occurs repeatedly or if an error can't be
corrected, contact your dealer.Your cassette tape player automatically reduces
background noise. Dolby Noise Reduction is
manufactured under a license from Dolby Laboratories
Licensing Corporation. Dolby and the double
-D symbol
are trademarks of Dolby Laboratories Licensing
Corporation.
Auto CrO
2 allows the cassette tape player to adjust to
the type of cassette tape for clearer sound for CrO
2cassette tapes.
Using the Single Compact Disc Player
Insert a disc partway into the slot, label side up. The
player will pull it in. If the ignition and the radio are on
the disc will begin playing. The display will show a CD
symbol. CD and the track number will appear on the
display when a CD is playing. A compact disc may be
loaded with the radio off but it will not start playing
until the radio is on.
The integral CD player can play the smaller 8 cm
compact discs with a 12 cm adapter. Full
-size compact
discs and the smaller compact discs (with the 12 cm
adapter) are loaded in the same manner. See you dealer
for more information about the 12 cm adapter for using
8 cm discs.

3-22
If an error appears on the display, see ªCompact Disc
Messagesº later in this section.
When a CD is inserted the CD functions will appear on
the display above the pushbuttons, in place of the preset
stations (if programmed). The following explains what
each pushbutton and the SEEK and SCAN buttons will
perform when a CD is playing:
F1 PREV (Previous): Press this pushbutton to seek to
the previous track on the compact disc. Press and hold
this pushbutton to reverse the compact disc. Release it to
return to playing speed.
F2 NEXT: Press this pushbutton to seek to the next
track on the compact disc. Press and hold this
pushbutton to fast forward to another part of the
compact disc. Release it to return to playing speed.
F3 RDM (Random): Press this pushbutton to listen to
the tracks in random, rather than sequential, order.
RANDOM will appear on the display. Press this
pushbutton to turn off random play. RANDOM will
disappear from the display.
F4 RPT (Repeat): Press this pushbutton to listen to
the track that you are currently listening to again.
REPEAT will appear on the display. Press this
pushbutton again to turn off repeat play. REPEAT
will disappear from the display.F6 DISP (Display): Press this pushbutton to display the
time of the track. Press this pushbutton again to remove
the time of the track from the display.

SEEK
: Press the up or the down arrow to seek to
the next or to the previous track on the CD.
 SCAN: Press this button to listen to each track for
10 seconds. The compact disc will go to a track, play for
10 seconds, then go on to the next track. Press this
button again to stop scanning.
(Eject): Press this button, located to the right of the
CD slot, to stop a CD when it is playing or to eject a CD
when it is not playing. Eject may be activated with the
radio off and/or the ignition off.
Using the Six
-Disc Compact Disc Changer
The integral CD player can play the smaller 8 cm compact
discs with a 12 cm adapter. Full
-size compact discs and
the smaller compact discs (with the 12 cm adapter) are
loaded in the same manner. See you dealer for more
information about the 12 cm adapter for using 8 cm discs.
If an error appears on the display, see ªCompact Disc
Messagesº later in this section.
When a CD is inserted the CD functions will appear on
the display above the pushbuttons, in place of the preset
stations (if programmed).

3-23
LOAD: Press the LOAD button to load CDs into the
compact disc player. This compact disc player will hold
up to six discs.
To insert one disc, do the following:
1. The ignition and the radio can be on or off.
2. Press and release the LOAD button. Please Wait will
appear on the display.
3. Load the disc, when the display reads INSERT.
Insert a disc partway into the slot, label side up.
The player will pull the disc in.
When a disc is inserted, the CD symbol, the number of
the CD and the track number will be displayed if the
radio is on.
If the radio is on, the disc will begin to play
automatically.
To insert multiple discs, do the following:
1. The ignition and the radio can be on or off.
2. Press and hold the LOAD button for two seconds.
You will hear a beep and the display will read
Please Wait.3. Once the display reads INSERT, load a disc. Insert a
disc partway into the slot, label side up. The player
will pull the disc in.
Do not load a CD until the display reads INSERT.
The disc player will take up to six discs. Do not try
to load more than six. If you want to load less than
six discs, load the desired amount. The disc player
will time out when it does not receive any more discs
and the last disc loaded will begin to play.
If the radio is on, the last disc loaded will begin to play
automatically.
The following explains what each pushbutton and the
SEEK and SCAN buttons will perform when a CD
is playing:
F1 DISC  (Down): Press this pushbutton to seek to the
previous compact disc.
F2 DISC  (Up): Press this pushbutton to seek to the
next compact disc.
CD REV (Reverse): Press this pushbutton to seek to
the previous track on the compact disc. Press and hold
this pushbutton to reverse the compact disc. Release it to
return to playing speed.

3-24
CD FWD
(Forward): Press this pushbutton to seek
to the next track on the compact disc. Press and hold this
pushbutton to fast forward to another part of the
compact disc. Release it to return to playing speed.
F5 MODE: Press this pushbutton to select from
NORMAL, RPT TRCK (Repeat Track), RPT DISC
(Repeat Disc), RDM TRK (Random Track), and RDM
ALL (Random All Discs).

NORMAL: Sets the system for normal play of the
compact disc(s). NORMAL will not be displayed
when in this mode.

RPT TRCK (Repeat Track): Repeats the track that
you are currently listening to again. RPT TRCK will
appear on the display. Press the MODE pushbutton
again to turn off repeat play. RPT TRCK will
disappear from the display.

RPT DISC (Repeat Disc): Repeats the disc that you
are currently listening to again. RPT DISC will
appear on the display. Press the MODE pushbutton
again to turn off repeat play. RPT DISC will
disappear from the display.
RDM TRK (Random Track): Plays the tracks on
the current disc in random, rather than sequential,
order. RDM TRK will appear on the display. Press
the MODE pushbutton again to turn off random play.
RDM TRK will disappear from the display.

RDM ALL (Random All Discs): Plays all of the discs
loaded and tracks in random, rather than sequential,
order. RDM ALL will appear on the display. Press the
MODE pushbutton again to turn off random play. RDM
ALL will disappear from the display.
F6 DISP (Display): Press this pushbutton to display the
time of the track. Press this pushbutton again to display
CD PLAY and press this pushbutton once more to clear
the display.
 SEEK
: Press the up or the down arrow to seek to
the next or to the previous track on the CD.
 SCAN: Press this button to listen to each track for
10 seconds. The compact disc will go to a track, play for
10 seconds, then go on to the next track. Press this
button again to stop scanning.
(Eject): Press and release this button, located to the
right of the CD slot, to eject the CD that is currently
playing, or press and hold this button (you will hear a
beep) to eject all of the CDs loaded. Eject may be
activated with the radio off and/or the ignition off.

3-27
Navigation/Radio System (Option)
Navigation/Radio Display and Controls
The display screen is located in the center of the
instrument panel.Your vehicle may be equipped with an AM
-FM radio
navigation radio system that includes digital sound
processing (DSP), Radio Data System (RDS) with
program type selections (PTY) that will seek out the
kind of music you want to listen to. The radio system
can also communicate with your navigation system to
broadcast announcements on traffic, weather and
emergency alert communications. For information on
how to use this system, see the ªNavigation/Radio
Systemº supplement.
Theft-Deterrent Feature
THEFTLOCK
is designed to discourage theft of your
radio. Your vehicle has a ªbuilt
-inº theft-deterrent
feature on each radio that is automatic
-- there is no
programming required. The radio in your vehicle cannot
be used in any other vehicle. When the radio was
originally installed in your vehicle at the factory, it
stored the Vehicle Identification Number (VIN). Each
time the ignition is turned on, the VIN is verified. If the
vehicle's VIN does not match the VIN stored in the
radio, THEFTLOCK will be activated and the audio
system will not play. If the radio is removed from your
vehicle, the original VIN in the radio can be used to
trace the radio back to your vehicle.

3-31 Care of Your Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight and
extreme heat. If they aren't, they may not operate
properly or may cause failure of the tape player.
Your tape player should be cleaned regularly after every
50 hours of use. Your radio will display CLEAN TAPE
to indicate that you have used your tape player for
50 hours without resetting the tape clean timer. If this
message appears on the display, your cassette tape
player needs to be cleaned. It will still play tapes,
but you should clean it as soon as possible to prevent
damage to your tapes and player. If you notice a
reduction in sound quality, try a known good cassette to
see if the tape or the tape player is at fault. If this other
cassette has no improvement in sound quality, clean the
tape player.
For best results, use a scrubbing action, non
-abrasive
cleaning cassette with pads which scrub the tape head as
the hubs of the cleaner cassette turn. The recommended
cleaning cassette is available through your dealer
(GM Part No. 12344789).For vehicles with the single compact disc player, use the
following steps:
1. Turn the ignition to ON or ACCESSORY.
2. Turn the radio on.
3. Insert the scrubbing action cleaning cassette.
4. Eject the cleaning cassette after the manufacturer's
recommended cleaning time.
For vehicles with the six
-disc compact disc player, when
cleaning the cassette tape player with the recommended
non
-abrasive cleaning cassette, it is possible that the
cassette may eject, because the cut tape detection feature
on your radio may recognize it as a broken tape, in error.
To prevent the cleaning cassette from being ejected, use
the following steps:
1. Turn the ignition to ON or ACCESSORY.
2. Turn the radio on.
3. Insert the scrubbing action cleaning cassette.
4. Eject the cleaning cassette after the manufacturer's
recommended cleaning time.

4-25
If you drive regularly in steep country, or if you're
planning to visit there, here are some tips that can make
your trips safer and more enjoyable.

Keep your vehicle in good shape. Check all fluid
levels and also the brakes, tires, cooling system and
transmission. These parts can work hard on
mountain roads.

Know how to go down hills. The most important
thing to know is this: let your engine do some of the
slowing down. Shift to a lower gear when you go
down a steep or long hill.
CAUTION:
If you don't shift down, your brakes could get
so hot that they wouldn't work well. You would
then have poor braking or even none going
down a hill. You could crash. Shift down to let
your engine assist your brakes on a steep
downhill slope.
CAUTION:
Coasting downhill in NEUTRAL (N) or with the
ignition off is dangerous. Your brakes will have to
do all the work of slowing down. They could get
so hot that they wouldn't work well. You would
then have poor braking or even none going down
a hill. You could crash. Always have your engine
running and your vehicle in gear when you go
downhill.

Know how to go uphill. You may want to shift down
to a lower gear. The lower gears help cool your engine
and transmission, and you can climb the hill better.

Stay in your own lane when driving on two
-lane
roads in hills or mountains. Don't swing wide or cut
across the center of the road. Drive at speeds that let
you stay in your own lane.

As you go over the top of a hill, be alert. There could be
something in your lane, like a stalled car or an accident.

You may see highway signs on mountains that warn of
special problems. Examples are long grades, passing or
no
-passing zones, a falling rocks area or winding
roads. Be alert to these and take appropriate action.

5-4
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren't touching
each other. If they are, it could cause a ground
connection you don't want. You wouldn't be able to
start your vehicle and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles involved in
the jump start procedure. Put an automatic
transmission in PARK (P) or a manual transmission
in NEUTRAL before setting the parking brake.
NOTICE:
If you leave your radio on, it could be badly
damaged. The repairs wouldn't be covered by
your warranty.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or in the accessory power outlets. Turn off the
radio and all lamps that aren't needed. This will
avoid sparks and help save both batteries. And it
could save your radio!
4. Open the hoods and locate the batteries. Find the
positive (+) and negative (
-) terminal locations on
each vehicle. See ªEngine Compartment Overviewº
in the Index for more information on location of
the battery.

6-19
Passenger Compartment Air Filter
The passenger compartment air filter traps most of the
pollen from the air entering your vehicle. Like your
vehicle's engine air cleaner/filter, it needs to be changed
periodically. For how often to change the passenger
compartment air filter, see ªScheduled Maintenance
Servicesº in the Index.
The passenger compartment air filter is located
underneath the hood below the windshield wiper arm on
the passenger's side of the vehicle. See ªEngine
Compartment Overviewº in the Index for more
information on location.
Use the procedure listed below to replace the passenger
compartment air filter:
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 wipers will be straight up and down on
the windshield.
This will allow you access to the leaf screen
under which is located the passenger compartment
air filter.
3. Open the hood to access the engine compartment.
See ªHood Releaseº listed earlier in this section for
more information.
4. Remove the four screws that hold the leaf screen in
place and lift off the screen by lifting and sliding
toward the center of the vehicle.
5. Pull out on the two tabs located on each end of the
filter cover.
6. Lift the filter cover off by pulling it straight upward.
7. Remove the old filter and insert a new one. Make
sure the arrow on the filter is pointing toward the
passenger compartment.
See ªNormal Maintenance Replacement Partsº
later in this section for the correct part number for
the filter.
8. Reverse Steps 1 through 6 to reinstall the cover.

6-31
Brakes
Brake Fluid
Your brake master cylinder reservoir is on the driver's side
of the engine compartment. It is filled with DOT
-3 brake
fluid. See ªEngine Compartment Overviewº in the Index.
There are only two reasons why the brake fluid level in the
reservoir might go down. The first is that the brake fluid
goes down to an acceptable level during normal brake
lining wear. When new linings are put in, the fluid level
goes back up. The other reason is that fluid is leaking out
of the brake system. If it is, you should have your brakesystem fixed, since a leak means that sooner or later your
brakes won't work well, or won't work at all.
So, it isn't a good idea to ªtop offº your brake fluid.
Adding brake fluid won't correct a leak. If you add fluid
when your linings are worn, then you'll have too much
fluid when you get new brake linings. You should add
(or remove) brake fluid, as necessary, only when work is
done on the brake hydraulic system.
CAUTION:
If you have too much brake fluid, it can spill on the
engine. The fluid will burn if the engine is hot
enough. You or others could be burned, and your
vehicle could be damaged. Add brake fluid only
when work is done on the brake hydraulic system.
If the ignition is in ON and the brake fluid is low, the
Check Brake Fluid message will be displayed in the
DIC. See ªCheck Message, Brake Fluidº in the Index
for more information.
When your brake fluid falls to a low level, your brake
warning light will come on. See ªBrake System Warning
Lightº in the Index.