maintenance schedule CADILLAC STS 2007 1.G Owners Manual

Windshield Replacement
....................... 419
Windshield Wiper Blade
Replacement
..................................... 419
Tires
..................................................... 421
Appearance Care
.................................. 476
Vehicle Identication
............................. 485
Electrical System
.................................. 486
Capacities and Specications
................ 498Maintenance Schedule
.............................. 501
Maintenance Schedule
.......................... 502
Customer Assistance Information
............. 525
Customer Assistance and
Information
........................................ 526
Reporting Safety Defects
...................... 542
Index
.......................................................... 545
2

Manual Operation
yNz(Mode):Pressing the mode switch and
changing the mode cancels automatic operation
and allows the operator to manually select the air
delivery location. Press AUTO to return to
automatic operation.
The outboard air outlets always receive airow
regardless of the mode selected. SeeOutlet
Adjustment on page 237to change this airow
from the outboard outlets.
To change the current mode, select one of the
following:
Y(Vent):This mode directs air to the instrument
panel outlets.
\(Bi-Level):This mode directs about half of the
air to the instrument panel outlets, and then
directs most of the remaining air to the oor
outlets. In automatic operation, cooler air is
directed to the upper outlets and warmer air to the
oor outlets.
[(Floor):This mode directs most of the air to
the oor outlets with some air directed to the
outboard outlets, and a little air directed to
the windshield and side windows.The mode switch can also be used to select the
defog mode. Information on defogging and
defrosting can be found later in this section.
yAz(Fan):Press this switch to increase or
decrease the fan speed. Pressing this switch
cancels automatic operation and allows the
operator to manually select the amount of airow.
Press AUTO to return to automatic operation.
If the airow seems low when the fan speed is at
the highest setting, the passenger compartment
air lter may need to be replaced. For more
information, seePassenger Compartment Air Filter
on page 239andScheduled Maintenance on
page 505.
h(Recirculation):Press this button to control
the air source for the climate control system. If
in AUTO mode, press this button once to
select recirculation. This mode keeps outside air
from coming in the vehicle and recirculates the air
in the vehicle. It can be used to prevent outside
air and odors from entering the vehicle or to
help cool the air inside the vehicle more quickly.
232

The air quality sensor does not activate due to
organic odors, like skunk, and may not activate on
many chemical-related odors. If you wish to limit
these types of odors, manually select recirculation.
Your vehicle could also have a charcoal lter that
can limit many odors from being pulled into your
vehicle. This lter, like your engines air cleaner
lter, needs to be changed periodically. See
Scheduled Maintenance on page 505. The air
quality sensor system does not protect against
carbon monoxide (CO), which you cannot see or
smell. SeeEngine Exhaust on page 125.
O(Power Driver’s Temperature):Press the
power button located on the driver’s side of
the climate control panel to turn the entire climate
control system on or off. Turn the knob to
increase or decrease the temperature inside the
vehicle.
O(Power Passenger’s Temperature):Press
the power button located on the passenger’s side
of the climate control panel to turn the passenger’s
climate control system on if they wish to have adifferent setting than the driver. Turn the knob to
increase or decrease the temperature for the
front passenger. Turning the passenger’s
side power button off will not shut off the climate
control system for the passenger. The system
is set to the same setting as the driver.
{(Ventilated Seat):Press this button, to turn on
the driver or passenger’s side ventilated seat, if
the vehicle has this feature. SeeHeated and
Ventilated Seats on page 11.
J(Heated Seat):Press this button, to turn on
the driver or passenger’s side heated seat
and seatback, if the vehicle has this feature. See
Heated and Ventilated Seats on page 11.
^(Air Conditioning):Press this button to
manually turn off the air conditioning compressor.
Press AUTO to return to automatic operation or
press the A/C OFF button again. To limit fogging on
the windshield, the air conditioning compressor
cannot be off while in the defrost mode.
234

Passenger Compartment Air Filter
Your vehicle may be equipped with a passenger
compartment air lter. There are two types of lters
available. There is a standard dust lter that
traps small particles including pollen. There is,
also, a dust/odor lter available that traps dust and
pollen and also uses a charcoal element to help
reduce many offensive odors from entering
your vehicle. Like your vehicle’s engine air
cleaner/lter, it will need to be changed
periodically. For information on how often to
change the passenger compartment air lter, see
Scheduled Maintenance on page 505.
Notice:Driving without a passenger
compartment air lter in place can cause water
and small particles, like paper and leaves, to
be pulled into your climate control system
which may cause damage to it. Make sure you
always replace the old lter with a new one.The access panel for the passenger compartment
air lter is located under the hood near the
windshield, on the passenger’s side of the vehicle.
SeeEngine Compartment Overview on page 373
for more information on location. SeeDoing
Your Own Service Work on page 364for
information on doing your own service work.
239

Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that
critical emission control systems have not been
completely diagnosed by the system. The vehicle
would be considered not ready for inspection.
This can happen if you have recently replaced the
battery or if the battery has run down. The
diagnostic system is designed to evaluate critical
emission control systems during normal driving.
This may take several days of routine driving. If you
have done this and your vehicle still does not pass
the inspection for lack of OBD system readiness,
your dealer can prepare the vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others could
be burned. Check your oil as soon as
possible and have your vehicle serviced.Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
If equipped, this light
tells you if there could be
a problem with your
engine oil pressure.
This light will come on briey when you start your
engine. That is a check to be sure the light
works. If it does not come on, be sure to have it
xed so it will be there to warn you if something
goes wrong.
When the light comes on and stays on, it means
that oil is not owing through your engine properly.
You could be low on oil and you might have
some other system problem.
255

LR TIRE:This display shows the air pressure in
the driver’s side rear tire.
RR TIRE:This display shows the air pressure in
the passenger’s side rear tire.
If the tire pressure display shows dashes instead
of a value, there may be a problem with your
vehicle. If this consistently occurs, see your dealer
for service.
ENGINE OIL LIFE
If your vehicle has this display, it shows the
estimated oil life remaining. If you see
99% ENGINE OIL LIFE on the display, that means
that 99% of the current oil life remains.
When the oil life is depleted, the CHANGE
ENGINE OIL SOON message will appear on the
display. Change the oil as soon as possible.
In addition to the engine oil life system
monitoring the oil life, additional maintenance
is recommended in the Maintenance Schedule in
this manual. SeeScheduled Maintenance on
page 505andEngine Oil on page 380.After an oil change, reset the ENGINE OIL LIFE
display. To reset, seeEngine Oil Life System on
page 383. The display will show 100% ENGINE OIL
LIFE after it has been reset. Also clear the
CHANGE ENGINE OIL SOON message from the
display.
ENGLISH DISPLAY UNITS
(METRIC DISPLAY UNITS)
This display allows you to select between English
and metric units of measurement if your vehicle
has the uplevel DIC. Press the reset button
to switch between English and metric units.
Blank Line
This display shows no information.
ENGINE BOOST (STS-V Only)
This display shows a graphic that indicates the
amount of boost the engine is receiving in
either pounds per square inch (psi) or
kilopascals (kPa).
ENGINE OIL TEMPERATURE (STS-V Only)
This display shows the engine oil temperature
in either degrees Fahrenheit (°F) or degrees
Celsius (°C).
263

To help the generator recharge the battery quickly,
you can reduce the load on the electrical system
by turning off the accessories.
The normal battery voltage range is
11.5 to 15.5 volts. You can monitor battery voltage
on the DIC by pressing the information button
until you nd BATTERY VOLTS.
CHANGE ENGINE OIL SOON
This message displays when service is required
for your vehicle. See your dealer. SeeEngine
Oil on page 380andScheduled Maintenance on
page 505for more information.
When you reset the CHANGE ENGINE OIL
SOON message by clearing it from the display,
you still must reset the engine oil life system
separately. For more information on resetting the
engine oil life system, seeEngine Oil Life
System on page 383.
CHECK BRAKE FLUID
This message displays if the ignition is on to
inform the driver that the brake uid level is low.
Have the brake system serviced by your dealer as
soon as possible. SeeBrake System Warning
Light on page 248for more information.
CHECK GAS CAP
This message displays when the fuel cap has not
been fully tightened. Recheck the fuel cap to
ensure that it is on and tightened properly.
CHECK TIRE PRESSURE
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message displays when the tire
pressure in one of the tires needs to be checked.
SeeDIC Controls and Displays on page 258
for more information on checking your vehicle’s
tire pressures. If a tire pressure message appears
on the DIC, stop as soon as you can. Have the
tire pressures checked and set to those shown on
the Tire Loading Information label. SeeTire
Pressure Monitor System on page 433and
Ination - Tire Pressure on page 431for more
information. If the tire pressure is low, the low tire
pressure warning light comes on. SeeLow Tire
Pressure Warning Light on page 249.
267

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 373for more information on locating
the air cleaner/lter.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/lter at the MaintenanceII
intervals and replace it at the rst oil change
after each 50,000 mile (83 000 km) interval. See
Scheduled Maintenance on page 505for more
information. If you are driving in dusty/dirty
conditions, inspect the lter at each engine
oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/lter remove the lter
from the vehicle and lightly shake the lter to
release loose dust and dirt. If the lter remains
caked with dirt, a new lter is required.
To inspect or replace the lter in the 3.6L V6 or
4.6L V8 engines, do the following:
1. Remove the two screws located on the top of
the cover.
2. Disconnect the coolant recovery hose so that
it is not going across the top of the engine air
cleaner/lter.
4.6L V8 Engine shown, 3.6L V6 Engine similar
386

Transfer Case
When to Check Lubricant
It is not necessary to regularly check the transfer
case 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
A. Drain Plug
B. Fill PlugTo 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 transfer case, you’ll need to
add some lubricant. Add enough lubricant to
raise the level to the bottom of the ller plug hole.
Use care not to overtighten the plug.
What to Use
Refer to the Maintenance Schedule to determine
what kind of lubricant to use. SeeRecommended
Fluids and Lubricants on page 516.
415

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 516.
416