cooling CADILLAC CTS 2009 2.G Owner's Manual

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 5-25.
See footnote (l).
❑Rotate tires and check ination pressures and wear.
SeeTire Inspection and Rotation on page 5-76and
“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 and 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

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
All-wheel-drive vehicles: Change
transfer case uid (normal service).
See footnote (q).•
CTS-V Only: Change hydraulic clutch
uid.See footnote (o).• •••••
CTS-V Only: Change rear axle uid
(severe service only).See footnote (o).•••
CTS-V Only: Change brake uid
(severe service only).See footnote (o).• •••••
Replace spark plugs.An Emission
Control Service.•
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (i).•
6.2L Supercharged V8 Engine:
Intercooler system service (or every
ve years, whichever occurs rst).
See footnote (p).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (m).•
6-7

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
CTS-V Only: Inspect supercharger drive
belt.See footnote (m).•
If using DOT-4 brake uid, change brake
uid at a regular maintenance service
every two years.See footnote (j).
Maintenance Footnotes
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chafing, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts or
signs of wear. Inspect power steering lines and hoses
for proper hook-up, binding, leaks, cracks, chafing, etc.
(c)Visually inspect hoses and have them replaced if they
are cracked, swollen, or deteriorated. Inspect all pipes,
fittings and clamps; replace with genuine parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.(d)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and wiper blades, if
contaminated. Replace wiper blades that are worn or
damaged. See Windshield Wiper Blade Replacement on
page 5-59 and Windshield and Wiper Blades on
page 5-111 for more information.
(e)Make sure the safety belt reminder light and safety
belt assemblies are working properly. Look for any other
loose or damaged safety belt system parts. If you see
anything that might keep a safety belt system from doing
its job, have it repaired. Have any torn or frayed safety
belts replaced. Also see Checking the Restraint Systems
on page 1-74.
6-8

(f)Lubricate all key lock cylinders. Lubricate all body door
hinges. Lubricate all hinges and latches, including those
for the hood, rear compartment, console door, and any
folding seat hardware. More frequent lubrication may be
required when exposed to a corrosive environment.
Applying silicone grease on weatherstrips with a clean
cloth will make them last longer, seal better, and not stick
or squeak.
(g)If driving regularly under dusty conditions, the filter
may require replacement more often.
(h)Change automatic transmission fluid and filter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as high performance operation.(i)Drain, flush, and refill cooling system. This service can
be complex; you should have your dealer/retailer perform
this service. See Engine Coolant on page 5-32 for what to
use. Inspect hoses. Clean radiator, condenser, pressure
cap, and filler neck. Pressure test the cooling system and
pressure cap.
(j)If using DOT-4 brake fluid only: Drain, flush, and refill
brake hydraulic system at a regular maintenance service
every two years. This service can be complex; you should
have your dealer/retailer perform this service. See Brakes
on page 5-42.
(k)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(l)If driving regularly under dusty conditions, inspect the
filter at each engine oil change.
(m)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
6-9

Chemical Paint Spotting.................................5-113
Child Restraints
Child Restraint Systems...............................1-41
Infants and Young Children...........................1-37
Lower Anchors and Tethers for Children..........1-45
Older Children.............................................1-34
Securing a Child Restraint in a
Rear Seat Position...................................1-51
Securing a Child Restraint in the
Right Front Seat Position..........................1-54
Where to Put the Restraint...........................1-44
Cigarette Lighter.............................................3-23
Cleaning
Aluminum or Chrome-Plated Wheels.............5-112
Exterior Lamps/Lenses................................5-110
Fabric/Carpet............................................5-107
Finish Care...............................................5-110
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-108
Interior.....................................................5-106
Leather....................................................5-108
Speaker Covers.........................................5-109
Tires........................................................5-113
Underbody Maintenance.............................5-113
Washing Your Vehicle.................................5-110
Weatherstrips............................................5-109
Windshield and Wiper Blades......................5-111
Wood Panels............................................5-109Climate Control System
Air Filter, Passenger Compartment.................3-29
Dual ..........................................................3-24
Outlet Adjustment........................................3-29
Clock............................................................3-23
Clutch, Hydraulic.............................................5-30
Collision Damage Repair..................................7-11
Compact Spare Tire......................................5-105
Compass.......................................................3-56
Competitive Driving.........................................4-13
Compressor Kit
Storing.......................................................5-95
Compressor Kit, Tire Sealant............................5-86
Control of a Vehicle.......................................... 4-3
Convenience Net............................................2-65
Coolant
Engine.......................................................5-32
Engine Temperature Gage............................3-42
Engine Temperature Warning Light.................3-41
Surge Tank Pressure Cap.............................5-37
Cooling System..............................................5-31
Cruise Control................................................3-14
Cruise Control Light........................................3-48
Cupholders....................................................2-64
Customer Assistance Information
Courtesy Transportation................................7-10
Customer Assistance for
Text Telephone (TTY) Users........................ 7-6
3