2009 CADILLAC STS hood release

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 uses a charcoal
element to help reduce many offensive odors from
entering your vehicle. The lter will need to be changed
periodically. For information on when to change the
passenger compartment air lter, seeScheduled
Maintenance on page 6-4.
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 side of the vehicle. SeeEngine Compartment
Overview on page 5-12for more information on location.
SeeDoing Your Own Service Work on page 5-4for
information on doing your own service work.
To access the passenger compartment air lter:
1. Pull back the rubber hood seal from the edge of the
leaf screen vent cover.
2. Remove the three fasteners that hold the lter
cover in place and slide the cover off.
3. To access the lter, remove the water deector by
lifting the outboard edge of the deector to release
the retention tab.
3-54

4. Lift the inboard edge of the deector to release the
retention tab.
5. Lift and slide the water deector toward the inboard
side and remove it.
6. The top edge of the lter should be visible. Reach
in and lift the lter out, pulling upward and toward
the front of the vehicle.
7. Insert the new air lter by sliding it back into place.
Make sure the arrow on the lter is pointing toward
the passenger compartment.
Reverse steps 1 through 3 to reinstall the water
deector, lter cover and the hood seal.Warning Lights, Gages, and
Indicators
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to
the warning lights and gages could prevent injury.
Warning lights come on when there may be or is a
problem with one of the vehicle’s functions. Some
warning lights come on briey when the engine is
started to indicate they are working.
Gages can indicate when there may be or is a problem
with one of the vehicle’s functions. Often gages and
warning lights work together to indicate a problem with
the vehicle.
When one of the warning lights comes on and stays on
while driving, or when one of the gages shows there may
be a problem, check the section that explains what to do.
Follow this manual’s advice. Waiting to do repairs can be
costly and even dangerous.
3-55

ENGINE PROTECTION REDUCED
RPM’S (Revolutions Per Minute)
This message displays when your vehicle is in an
overheated engine operating mode. If this message
appears, the vehicle has determined that continued
operation at the existing engine speed may lead to
engine overheating. The vehicle automatically limits
engine RPMs to prevent engine overheating. You may
notice the vehicle upshifting early or reduced speeds
while this message is displayed. When the engine oil
returns to a safe operating temperature, this message
clears from the DIC and the vehicle returns to normal
operation. Your vehicle does not require service when
this message is displayed.
FUEL LEVEL LOW
This symbol appears with
this message.
This message displays and a chime sounds if the fuel
level is low. Refuel as soon as possible. SeeFuel Gage
on page 3-71andFuel on page 5-5for more information.
HOOD AJAR
This symbol appears with
this message.
This message displays when the hood is not closed
completely. Make sure that the hood is closed
completely. SeeHood Release on page 5-11.
ICE POSSIBLE
This message displays when the outside temperature
is cold enough to create icy road conditions. Adjust your
driving accordingly.
KEY FOB BATTERY LOW
This message displays when the battery in the keyless
access transmitter is low. Replace the battery in the
transmitter. See “Battery Replacement” underKeyless
Access System Operation on page 2-5.
3-85

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements......5-4
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
the Vehicle.................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-6
California Fuel...............................................5-6
Additives.......................................................5-7
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-18
Engine Oil Life System..................................5-21
Engine Air Cleaner/Filter................................5-23
Automatic Transmission Fluid.........................5-25
Cooling System............................................5-26
Engine Coolant.............................................5-27
Coolant Surge Tank Pressure Cap..................5-34
Engine Overheating.......................................5-34Overheated Engine Protection
Operating Mode........................................5-36
Power Steering Fluid.....................................5-37
Windshield Washer Fluid................................5-38
Brakes........................................................5-39
Battery........................................................5-42
Jump Starting...............................................5-42
All-Wheel Drive..............................................5-47
Rear Axle.......................................................5-48
Front Axle......................................................5-49
Headlamp Aiming...........................................5-50
Bulb Replacement..........................................5-51
High Intensity Discharge (HID) Lighting............5-51
Halogen Bulbs..............................................5-51
Back-Up Lamps............................................5-52
Replacement Bulbs.......................................5-52
Windshield Replacement.................................5-52
Windshield Wiper Blade Replacement..............5-52
Tires..............................................................5-54
Winter Tires.................................................5-55
Tire Sidewall Labeling...................................5-56
Tire Terminology and Denitions.....................5-59
Run-Flat Tires (STS-V)..................................5-62
Ination - Tire Pressure.................................5-64
High-Speed Operation...................................5-65
Tire Pressure Monitor System.........................5-66
Tire Pressure Monitor Operation.....................5-68
Section 5 Service and Appearance Care
5-1

Hood Release
To open the hood, do the following:
1. Pull the hood release
lever with this symbol
on it. It is located inside
the vehicle on the lower
left side of the
instrument panel.
2. Then go to the front of the vehicle and nd the
secondary hood release lever. The lever is located
under the front edge of the grille near the center.
Push the release lever up and raise the hood.
Before closing the hood, be sure all the ller caps are
on properly. Then pull the hood down and close it rmly.
5-11

Usage Fluid/Lubricant
Intercooler
System
(4.4L V8
Supercharged
engine)50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant.
Hydraulic
Brake SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherOptikleen
®Washer Solvent.
Parking Brake
Cable GuidesChassis Lubricant
(GM Part No. U.S. 12377985,
in Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
Automatic
TransmissionDEXRON
®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Rear AxleSAE 75W-90 Synthetic Axle Lubricant
(GM Part No. U.S. 89021677,
in Canada 89021678) meeting
GM Specication 9986115.
Usage Fluid/Lubricant
Front Axle
(All-Wheel
Drive)SAE 75W-90 Synthetic Axle Lubricant
(GM Part No. U.S. 89021677,
in Canada 89021678) meeting
GM Specication 9986115.
Transfer Case
(All-Wheel
Drive)Manual Transmission Fluid
(GM Part No. U.S. 88861800,
in Canada 88861801).
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor, and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293,
in Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and
Door HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Weatherstrip
ConditioningWeatherstrip Lubricant
(GM Part No. U.S. 3634770,
in Canada 10953518) or
Dielectric Silicone Grease
(GM Part No. U.S. 12345579,
in Canada 992887).
6-14

G
Gage
Engine Coolant Temperature.........................3-65
Fuel..........................................................3-71
Speedometer..............................................3-57
Tachometer.................................................3-57
Garage Door Opener.......................................2-53
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-60
GM Mobility Reimbursement Program.................. 7-7
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5
Headlamp
Aiming .......................................................5-50
Headlamp Wiring...........................................5-113
Headlamps....................................................3-32
Bulb Replacement.......................................5-51
Daytime Running Lamp................................3-36
Flash-to-Pass..............................................3-13
Halogen Bulbs............................................5-51
High Intensity Discharge (HID) Lighting...........5-51
High/Low Beam Changer................................ 3-9Headlamps (cont.)
On Reminder..............................................3-36
Washer......................................................3-16
Wiper Activated...........................................3-36
Head-Up Display (HUD)...................................3-43
Heated Seats................................................... 1-3
Heated Steering Wheel..................................... 3-7
Heater...........................................................3-48
Engine Coolant...........................................2-29
Highbeam On Light.........................................3-70
High-Speed Operation, Tires.............................5-65
Highway Hypnosis...........................................4-19
Hill and Mountain Roads..................................4-20
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Wear Safety Belts Properly...................1-12
I
Ignition Positions.............................................2-26
Immobilizer....................................................2-24
Immobilizer Operation......................................2-24
Inadvertent Power Battery Saver.......................3-42
Infants and Young Children, Restraints...............1-31
Ination - Tire Pressure...................................5-64
Inator Kit, Tire...............................................5-87
6