2009 CADILLAC STS oil filter

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

After you have removed the sight shields (if equipped) on the 3.6L V6 engine, here is what you will see:
A. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-124.
B. Remote Negative (-) Terminal. SeeJump Starting on
page 5-42.
C. Remote Positive (+) Terminal. SeeJump Starting on
page 5-42.
D. Battery. SeeBattery on page 5-42.
E. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-54.
F. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
G. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-18.H. Engine Oil Dipstick (Out of View). See “Checking
Engine Oil” underEngine Oil on page 5-18.
I. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-39.
J. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-34
andCooling System on page 5-26.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-23.
L. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-38.
5-13

After you have removed the sight shields (if equipped) on the 4.6L V8 engine, here is what you will see:
A. Remote Negative (-) Terminal. SeeJump Starting on
page 5-42.
B. Remote Positive (+) Terminal. SeeJump Starting on
page 5-42.
C. Battery. SeeBattery on page 5-42.
D. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-54.
E. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-18.
G. Engine Oil Dipstick (Out of View). See “Checking
Engine Oil” underEngine Oil on page 5-18.H. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-39.
I. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-34
andCooling System on page 5-26.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-23.
K. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-124.
L. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-38.
5-15

After you have removed the sight shields (if equipped) on the 4.4L V8 STS-V engine, here is what you will see:
A. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-124.
B. Remote Positive (+) Terminal. SeeJump Starting on
page 5-42.
C. Remote Negative (-) Terminal. SeeJump Starting on
page 5-42.
D. Battery. SeeBattery on page 5-42.
E. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-54.
F. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-38.
G. Intercooler System Pressure Cap. SeeEngine
Coolant on page 5-27.
H. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.I. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-18.
J. Engine Oil Dipstick (Out of View). See “Checking
Engine Oil” underEngine Oil on page 5-18.
K. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-39.
L. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-34
andCooling System on page 5-26.
M. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-23.
If your vehicle is equipped with front compartment
underhood sight shields, before closing the hood be
sure to reinstall the sight shields. To reinstall the shields,
locate the tabs on the left and right sides and insert them
into the openings in the tower to tower brace. Then insert
the fasteners into the top of the shield and push the
fasteners back into place.
5-17

Engine Air Cleaner/FilterThe 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 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 (80 000 km) interval. SeeScheduled
Maintenance on page 6-4for more information.
If you are driving in dusty/dirty conditions, inspect
the lter at each engine oil change.
4.6L V8 Engine shown, 3.6L V6 Engine similar
5-23

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricants on page 6-13for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer/retailer for more
information.
Brake Fluid Capacities 1.1 qt 1.0 L
Cooling System
3.6L Engine 11.2 qt 10.6 L
4.4L (V-Series) Engine 13.4 qt 12.7 L
4.6L Engine 11.7 qt 11.1 L
Cooling System — Intercooler 4.4L (V-Series) Engine 2.6 qt 2.5 L
Engine Oil with Filter
3.6L Engine 6.0 qt 5.7 L
4.4L (V-Series) Engine 9.0 qt 8.5 L
4.6L Engine 8.0 qt 7.6 L
Fuel Tank 17.5 gal 66.2 L
5-134

When the CHANGE ENGINE OIL SOON message
appears, the following services, checks, and inspections
are required:
❑Change engine oil and lter. SeeEngine Oil on
page 5-18. Reset oil life system. SeeEngine Oil Life
System on page 5-21.An Emission Control Service.
❑Visually check for any leaks or damage.
See footnote (k).
❑Inspect engine air cleaner lter. If necessary, replace
lter. SeeEngine Air Cleaner/Filter on page 5-23.
See footnote (m).
❑Check tires for ination pressures and wear. SeeTires
on page 5-54. If tire rotation is recommended for the
vehicle, rotate tires. SeeTire Inspection and Rotation
on page 5-71and “Tire Wear Inspection” inAt Least
Once a Month on page 6-11.❑Inspect brake system.See footnote (a).
❑Check engine coolant and windshield washer uid
levels. If the vehicle has the 4.4L V8 supercharged
engine, check intercooler uid level. Add uid as
needed.
❑Perform any needed additional services. See
“Additional Required Services” in this section.
❑Inspect suspension and steering components.
See footnote (b).
❑Inspect engine cooling system.See footnote (c).
❑Inspect wiper blades.See footnote (d).
❑Inspect restraint system components.
See footnote (e).
❑Lubricate body components.See footnote (f).
6-5

Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer/retailer.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter Element
3.6L and 4.6L Engines 25798271 A2944C
4.4L (V-Series) Engine 15813300 A3078C
Engine Oil Filter
3.6L Engine 25177917 PF2129
4.4L (V-Series) Engine 89017527
1PF261
4.6L Engine 89017342 PF61
Passenger Compartment Air Filter 88957450 CF13C
Spark Plugs
3.6L Engine 92220447 41-990
4.4L (V-Series) Engine 12592619 41-991
4.6L Engine 12571535 41-987
Wiper Blades
Driver Side – 22 in (56.5 cm) 88958361 —
Passenger Side – 21 in (53.0 cm) 88958359 —
1Notice: If the vehicle is an STS-V model, the engine uses a special oil lter. The use of any other engine
oil lter could lead to lter failure and result in severe engine damage. Damage caused by use of the
wrong engine oil lter would not be covered by the vehicle warranty.
6-15