2006 CADILLAC CTS service indicator

Engine Oil Life System
When to Change Engine Oil
Your vehicle has a computer system that lets you know
when to change the engine oil and lter. This is based
on engine revolutions and engine temperature, and not
on mileage. Based on driving conditions, the mileage
at which an oil change will be indicated can vary
considerably. For the oil life system to work properly,
you must reset the system every time the oil is changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is necessary.
A change engine oil message in the Driver Information
Center (DIC) will come on. Change your oil as soon
as possible within the next 600 miles (1 000 km). It is
possible that, if you are driving under the best conditions,
the oil life system may not indicate that an oil change
is necessary for over a year. However, your engine oil
and lter must be changed at least once a year and
at this time the system must be reset. Your dealer has
GM-trained service people who will perform this work
using genuine GM parts and reset the system. It is also
important to check your oil regularly and keep it at the
proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
How to Reset the Engine Oil Life
System and the Oil Life Indicator
The Engine Oil Life System calculates when to change
your engine oil and lter based on vehicle use. Anytime
your oil is changed, reset the system so it can calculate
when the next oil change is required. If a situation occurs
where you change your oil prior to a change engine oil
message in the DIC being turned on, reset the system.
After the oil has been changed, the change engine
oil message and the oil life indicator must be reset.
To reset the message and indicator, use one of
the following procedures:
Base Audio System
Press the CLR button located to the right of the DIC
display to acknowledge the change engine oil message.
This will clear the message from the display and reset it.
To reset the oil life indicator, use the following steps:
1. Press the up or down arrow on the INFO button
located to the right of the DIC display to access
the DIC menu.
2. Once XXX% ENGINE OIL LIFE menu item is
highlighted, press and hold the CLR button.
The percentage will return to 100, and the oil life
indicator will be reset. Repeat the steps if the
percentage does not return to 100.
3. Turn the key to OFF.
5-20

If the change engine oil message comes back on when
you start your vehicle, the engine oil life system has
not reset. Repeat the procedure.
Navigation System
If you have the navigation system, see “Vehicle
Customization” in the Navigation System Manual for
how to reset the oil life indicator.
What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose of clothing or
rags containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from the
lter before disposal. Never dispose of oil by putting it in
the trash, pouring it on the ground, into sewers, or into
streams or bodies of water. Instead, recycle it by taking
it to a place that collects used oil. If you have a problem
properly disposing of your used oil, ask your dealer,
a service station or a local recycling center for help.
Engine Air Cleaner/Filter
The engine air cleaner/lter is in the engine
compartment on the driver’s side of the vehicle, near
the front. SeeEngine Compartment Overview on
page 5-12for more information on location.CTS shown, CTS-V similar
5-21

Automatic Transmission Fluid
It is not necessary to check the transmission uid level.
A transmission uid leak is the only reason for uid
loss. If a leak occurs, take your vehicle to your
GM dealer service department and have it repaired as
soon as possible.
Change the uid and lter at the intervals listed in
Additional Required Services on page 6-6, and be sure
to use the transmission uid listed inRecommended
Fluids and Lubricants on page 6-13.
Notice:Use of the incorrect automatic transmission
uid may damage your vehicle, and the damages
may not be covered by your warranty. Always
use the automatic transmission uid listed in
Recommended Fluids and Lubricants on page 6-13.
How to Reset the Change Transmission
Fluid Message and the Transmission
Fluid Indicator
After the transmission uid has been changed, the
Change Trans Fluid message and the transmission
uid life indicator must be reset. To reset the message
and indicator, use one of the following procedures:
Base Audio System
Press the CLR (Clear) button located to the right of
the DIC display to acknowledge the CHANGE TRANS
FLUID message. This will clear the message from
the display and reset it.
To reset the transmission uid life indicator, use the
following steps:
1. Press the up or down arrow on the INFO button
located to the right of the DIC display to access
the DIC menu.
2. Once the XXX% TRANS FLUID LIFE menu item
is highlighted, press and hold the CLR button.
The percentage will return to 100, and the
transmission uid life indicator will be reset.
3. Repeat the steps if the percentage does not
return to 100.
Navigation System
If your vehicle has a navigation system, see your
navigation system supplement for instructions on how
to acknowledge the Change Trans Fluid message
and reset the transmission uid life indicator.
5-23

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the brake
pads are worn and new pads are needed. The sound
may come and go or be heard all the time your vehicle
is moving, except when you are pushing on the
brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon the brakes will not work well. That could
lead to an accident. When you hear the brake
wear warning sound, have your vehicle
serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.Some driving conditions or climates may cause a brake
squeal when the brakes are rst applied or lightly
applied. This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to GM torque specications.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return
to normal height, or if there is a rapid increase in pedal
travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you apply the brakes, with or without the
vehicle moving, your brakes adjust for wear.
5-40

If your vehicle has the Tire Pressure Monitor System
(TPMS) the TPMS sensors will need to be reset
and matched to the tire/wheel position. A special TPMS
diagnostic tool is used to reset the sensor identication
codes. See your dealer for service.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” underCapacities and
Specications on page 5-115.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if needed, to get all
the rust or dirt off. SeeChanging a Flat Tire
(CTS Only) on page 5-84.
When It Is Time for New Tires
One way to tell when it is
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire if any of the following statements
are true:
You can see the indicators at three or more places
around the tire.
You can see cord or fabric showing through the
tire’s rubber.
The tread or sidewall is cracked, cut, or snagged
deep enough to show cord or fabric.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other damage that
cannot be repaired well because of the size or
location of the damage.
5-72

M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-10
At Least Once a Year..................................6-11
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-8
Maintenance Record....................................6-17
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-15
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-3
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-41
Manual Seats................................................... 1-2
Manual Transmission
Fluid..........................................................5-24
Operation...................................................2-30
Map Pocket...................................................2-49
Memory Mirrors..............................................2-52
Memory Seat.................................................2-52
Message
Center.......................................................3-47
Check Engine Oil Pressure...........................3-51
DIC Warnings and Messages........................3-61Message (cont.)
Hot Coolant Temperature Warning..................3-50
Oil Temperature Warning..............................3-51
One-to-Four Shift.........................................3-52
Tire Pressure Warning..................................3-52
Transmission Fluid Hot.................................3-50
Mirrors
Automatic Dimming Rearview with OnStar
®.....2-39
Automatic Dimming Rearview with OnStar®
and Compass..........................................2-39
Memory .....................................................2-52
Outside Convex Mirror.................................2-43
Outside Curb View Assist Mirror....................2-42
Outside Heated Mirrors................................2-43
Outside Power Mirrors..................................2-42
MyGMLink.com................................................ 7-4
N
Navigation/Radio System, see Navigation
Manual.....................................................3-101
New Vehicle Break-In......................................2-22
Normal Maintenance Replacement Parts............6-15
O
Odometer......................................................3-33
Odometers, Trip..............................................3-33
Off-Road Recovery..........................................4-16
8

Oil
Engine.......................................................5-16
Pressure Light.............................................3-44
Oil, Engine Oil Life System..............................5-20
Oil Temperature Warning Message....................3-51
Older Children, Restraints................................1-30
One-to-Four Shift Message...............................3-52
Online Owner Center........................................ 7-4
OnStar
®System, see OnStar®Manual...............2-43
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-28
Outlet(s), Accessory Power...............................3-21
Outside
Convex Mirror.............................................2-43
Curb View Assist Mirror................................2-42
Heated Mirrors............................................2-43
Power Mirrors.............................................2-42
Overheated Engine Protection
Operating Mode..........................................5-30
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-101
Panic Brake Assist..........................................4-13
Parade Dimming.............................................3-21Park (P)
Shifting Into................................................2-34
Shifting Out of............................................2-36
Parking
Brake........................................................2-33
Over Things That Burn.................................2-37
Parking Your Vehicle.......................................2-36
Passenger Airbag Status Indicator.....................3-35
Passenger Compartment Air Filter.....................3-29
Passenger Sensing System..............................1-63
Passing.........................................................4-16
Power
Accessory Outlet(s)......................................3-21
Door Locks.................................................. 2-9
Electrical System.......................................5-104
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-24
Seat............................................................ 1-3
Steering Fluid.............................................5-36
Windows....................................................2-15
Pretensioners, Safety Belt................................1-29
Programmable Automatic Door Locks.................2-10Q
Questions and Answers About Safety Belts.........1-15
9

Traction
Control System (TCS)............................4-9, 4-10
Control System Warning Light.......................3-39
Limited-Slip Rear Axle..................................4-12
StabiliTrak
®System.....................................4-12
Transmission
Fluid, Automatic...........................................5-23
Fluid Hot Message......................................3-50
Fluid, Manual..............................................5-24
Transmission Operation, Automatic....................2-27
Transmission Operation, Manual........................2-30
Trip Odometers..............................................3-33
Trunk............................................................2-12
Turn and Lane-Change Signals.......................... 3-9
Turn Signal/Multifunction Lever........................... 3-9
U
Understanding Radio Reception.......................3-102
Uniform Tire Quality Grading............................5-75
Universal Home Remote System.......................2-45
Operation...................................................2-46
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-32Vehicle (cont.)
Parking Your...............................................2-36
Symbols......................................................... iv
Vehicle Data Collection and Event Data
Recorders..................................................7-11
Vehicle Identication
Number (VIN)............................................5-103
Service Parts Identication Label..................5-103
Vehicle Personalization....................................2-52
DIC ...........................................................3-70
Memory Seat and Mirrors.............................2-52
Ventilation Adjustment......................................3-28
Visors...........................................................2-18
W
Warning Lights, Gages and Indicators................3-30
Warnings
DIC Warnings and Messages........................3-61
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Wheels
Alignment and Tire Balance..........................5-77
Different Size..............................................5-75
Replacement...............................................5-77
Where to Put the Restraint...............................1-40
13