2005 CADILLAC STS coolant

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-15. Reset oil life system.
SeeEngine Oil Life System on page 5-18.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 5-20.See footnote (m).•
Check tires for ination pressures and wear. SeeTires on page 5-53. If tire
rotation is recommended for your vehicle, rotate tires. SeeTire Inspection and
Rotation on page 5-65and “Tire Wear Inspection” inAt Least Once a Month
on page 6-9.••
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).•
Check transmission uid level and add uid as needed.•
Replace passenger compartment air lter.See footnote (g).•
6-5

(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors, and anchorages
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 look for any opened or broken airbag
coverings, and have them repaired or replaced.
The airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders. Lubricate all
hinges and latches, including those for the hood, rear
compartment, glove box door, and console door.
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 you drive regularly under dusty conditions, the lter
may require replacement more often.(h)Change automatic transmission uid and lter 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 limousine service.
Uses such as high performance operation.
If you do not use your vehicle under any of these
conditions, the uid and lter do not require change.
(j)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-22 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(k)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(l)Inspect throttle body bore and valve plates for
deposits. Open the throttle valve and inspect all
surfaces. Clean as required.
(m)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
6-8

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-15for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-22for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-53for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-74.
Tire Wear Inspection
Tire rotation is recommended if your vehicle has the
same size tires at all four wheel positions and may
be required for high mileage highway drivers prior to
the Engine Oil Life System service notication. Check
the tires for wear and, if necessary, rotate the tires.
SeeTire Inspection and Rotation on page 5-65.
6-9

Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number or specication may be obtained from your
dealer.
Usage Fluid/Lubricant
Engine OilThe engine requires a special
engine oil meeting GM Standard
GM4718M. Oils meeting this
standard may be identied as
synthetic, and should also be
identied with the American
Petroleum Institute Certied for
Gasoline Engines starburst symbol.
However, not all synthetic API oils
with the starburst symbol will meet
this GM standard. You should look
for and use only oil that meets
GM Standard GM4718M. GM
Goodwrench
®oil meets all the
requirements for your vehicle.
For the proper viscosity, see
Engine Oil on page 5-15.
Usage Fluid/Lubricant
Engine Coolant50/50 mixture of clean,
drinkable water and use only
DEX-COOL
®Coolant. SeeEngine
Coolant on page 5-22.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
Washer SolventGM Optikleen
®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
®-III Automatic
Transmission Fluid. Look for
“Approved for the H-Specication”
on the label.
6-12

Child Restraints (cont.)
Older Children.............................................1-26
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Securing a Child Restraint in a Rear
Seat Position...........................................1-40
Securing a Child Restraint in the Right
Front Seat Position...................................1-43
Top Strap...................................................1-35
Top Strap Anchor Location............................1-37
Where to Put the Restraint...........................1-34
Cigarette Lighter.............................................3-49
Cleaning
Aluminum or Chrome-Plated Wheels..............5-91
Exterior Lamps/Lenses.................................5-89
Fabric/Carpet..............................................5-87
Finish Care.................................................5-89
Inside of Your Vehicle..................................5-85
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-88
Leather......................................................5-87
Speaker Covers..........................................5-88
Tires..........................................................5-91
Underbody Maintenance...............................5-92
Washing Your Vehicle...................................5-89
Weatherstrips..............................................5-88
Windshield and Wiper Blades........................5-90
Wood Panels..............................................5-88Cleaning (cont.)
Climate Control System
Air Filter, Passenger Compartment.................3-58
Dual..........................................................3-50
Outlet Adjustment........................................3-56
Rear..........................................................3-57
Comfort Guides, Rear Safety Belt.....................1-23
Compact Spare Tire........................................5-84
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-45
Coolant
Engine Temperature Gage............................3-67
Engine Temperature Warning Light.................3-67
Heater, Engine............................................2-25
Surge Tank Pressure Cap.............................5-24
Cooling System..............................................5-27
Cruise Control................................................3-16
Cruise Control, Adaptive..................................3-20
Cruise Control, Forward Collision Alert (FAC)
System........................................................ 3-9
Cruise Control Light........................................3-72
Cupholder(s)..................................................2-45
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
3

Customer Assistance Information (cont.)
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to
General Motors........................................7-10
Reporting Safety Defects to the
Canadian Government..............................7-10
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Service.......................................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-38
Defensive Driving............................................. 4-2
Diversity Antenna System...............................3-118
Doing Your Own Service Work........................... 5-4
Door
Locks........................................................2-11
Power Door Locks.......................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-13
Driver Information Center (DIC).........................3-73
DIC Controls and Displays............................3-74
DIC Warnings and Messages........................3-78
Other Messages..........................................3-91Driving
At Night.....................................................4-16
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-23
In Rain and on Wet Roads...........................4-17
Rocking Your Vehicle to Get it Out.................4-30
Winter........................................................4-25
Dual Climate Control System............................3-50E
Electrical System
Add-On Equipment......................................5-95
Fuses and Circuit Breakers...........................5-95
Headlamp Wiring.........................................5-95
Power Windows and Other Power Options......5-95
Rear Underseat Fuse Block..........................5-99
Underhood Fuse Block.................................5-96
Windshield Wiper Fuses...............................5-95
Engine
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-37
Check and Service Engine Soon Light............3-68
Coolant......................................................5-22
Coolant Heater............................................2-25
4

Engine (cont.)
Coolant Temperature Gage...........................3-67
Coolant Temperature Warning Light................3-67
Engine Compartment Overview......................5-12
Exhaust.....................................................2-33
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-26
Overheating................................................5-24
Starting......................................................2-24
Entry Lighting.................................................3-42
Event Data Recorders (EDR)............................. 7-8
Extender, Safety Belt.......................................1-26
Exterior Lighting Battery Saver..........................3-41
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage...............................................5-92
Flash-to-Pass.................................................3-13
Flat Tire........................................................5-74
Flat Tire, Changing.........................................5-74
Flat Tire, Storing.............................................5-83
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-31
Windshield Washer......................................5-32
Fog Lamp Light..............................................3-71Fog Lamps....................................................3-39
Forward Collision Alert (FAC) System.................. 3-9
Front Axle......................................................5-45
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-72
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Fuses and Circuit Breakers...........................5-95
Rear Underseat Fuse Block..........................5-99
Underhood Fuse Block.................................5-96
Windshield Wiper.........................................5-95
G
Gage
Engine Coolant Temperature.........................3-67
Fuel..........................................................3-72
Speedometer..............................................3-62
Tachometer.................................................3-62
Garage Door Opener.......................................2-41
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
5

K
Keyless Access System..................................... 2-3
Keyless Access System, Operation...................... 2-4
Keys............................................................... 2-2
L
Labelling, Tire Sidewall....................................5-54
Lamps
Battery Load Management............................3-42
Exterior Lighting Battery Saver......................3-41
Fog ...........................................................3-39
Inadvertent Power Battery Saver....................3-43
Reading.....................................................3-42
Twilight Sentinel
®........................................3-40
LATCH System
Child Restraints...........................................1-38
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Light
Airbag Readiness........................................3-63
Anti-Lock Brake System Warning...................3-65
Brake System Warning.................................3-64
Charging System.........................................3-64
Cruise Control.............................................3-72
Engine Coolant Temperature Warning.............3-67Light (cont.)
Fog Lamp..................................................3-71
Highbeam On.............................................3-72
Lights On Reminder.....................................3-71
Low Tire Pressure Warning Light...................3-66
Malfunction Indicator....................................3-68
Oil Pressure...............................................3-70
Safety Belt Reminder...................................3-62
Security.....................................................3-71
TCS Warning Light......................................3-66
Traction Control System (TCS) Warning..........3-66
Lighting
Entry.........................................................3-42
Parade Dimming..........................................3-42
Limited-Slip Rear Axle....................................... 4-9
Loading Your Vehicle.......................................4-30
Lockout Protection..........................................2-13
Locks
Door..........................................................2-11
Lockout Protection.......................................2-13
Power Door................................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-14
Lumbar
Power Controls............................................. 1-3
7