coolant CADILLAC STS 2006 1.G Owner's Guide

(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.(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 5-26 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.
(n)Visually inspect belt for fraying, excessive cracks,
or obvious damage. Replace belt if necessary.
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.
6-8

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 5-18for 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 5-26for further details.
Intercooler Coolant Level Check
(4.4L Supercharged Engine)
Check the coolant level and add DEX-COOL®coolant
mixture if necessary. SeeEngine Coolant on page 5-26
for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the
windshield washer uid reservoir 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 5-56for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire (STS Only) on
page 5-83.
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 5-70.
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 (API) 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, seeEngine Oil on
page 5-18.
Engine Cooling
System50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-26.
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
WasherGM 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
Transmission
(6-Speed)DEXRON
®-VI Automatic
Transmission Fluid.
Automatic
Transmission
(5-Speed)DEXRON
®-III Automatic
Transmission Fluid. Look for
“Approved for the H-Specication”
on the label.
6-12

Chains, Tire...................................................5-78
Charging System Light....................................3-63
Check
Engine Light...............................................3-67
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-101
Child Restraints
Child Restraint Systems...............................1-32
Infants and Young Children...........................1-29
Lower Anchors and Tethers for Children..........1-37
Older Children.............................................1-26
Securing a Child Restraint in a
Rear Seat Position...................................1-44
Securing a Child Restraint in the
Right Front Seat Position..........................1-46
Where to Put the Restraint...........................1-36
Cigarette Lighter.............................................3-47
Cleaning
Aluminum or Chrome-Plated Wheels..............5-99
Exterior Lamps/Lenses.................................5-98
Fabric/Carpet..............................................5-96
Finish Care.................................................5-98
Inside of Your Vehicle..................................5-94
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-97
Leather......................................................5-96
Speaker Covers..........................................5-97
Tires........................................................5-100
Underbody Maintenance.............................5-101Cleaning (cont.)
Washing Your Vehicle...................................5-98
Weatherstrips..............................................5-97
Windshield and Wiper Blades........................5-99
Wood Panels..............................................5-97
Climate Control System
Air Filter, Passenger Compartment.................3-55
Dual ..........................................................3-48
Outlet Adjustment........................................3-54
Rear ..........................................................3-54
Collision Damage Repair..................................7-10
Comfort Guides, Rear Safety Belt.....................1-23
Compact Spare Tire........................................5-94
Compass.................................................1-7, 2-42
Competitive Driving.........................................4-18
Competitive Driving Mode................................4-10
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-51
Coolant
Engine Temperature Gage............................3-67
Engine Temperature Warning Light.................3-66
Heater, Engine............................................2-27
Surge Tank Pressure Cap.............................5-30
Cooling System..............................................5-32
Cruise Control................................................3-16
Cruise Control, Adaptive..................................3-19
Cruise Control, Forward Collision Alert (FAC)
System........................................................ 3-9
Cruise Control Light........................................3-72
3

Engine
Air Cleaner/Filter.........................................5-24
Battery.......................................................5-44
Check and Service Engine Soon Light............3-67
Coolant......................................................5-26
Coolant Heater............................................2-27
Coolant Temperature Gage...........................3-67
Coolant Temperature Warning Light................3-66
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-39
Oil .............................................................5-18
Oil Life System...........................................5-22
Overheated Protection Operating Mode...........5-31
Overheating................................................5-30
Starting......................................................2-25
Entry Lighting.................................................3-39
Event Data Recorders (EDR)............................. 7-8
Extender, Safety Belt.......................................1-26
Exterior Lighting Battery Saver..........................3-38
F
Filter
Engine Air Cleaner......................................5-24
Finish Damage.............................................5-101
Flashers, Hazard Warning.................................. 3-6Flash-to-Pass.................................................3-12
Flat Tire........................................................5-81
Flat Tire, Changing.........................................5-83
Flat Tire, Storing.............................................5-92
Fluid
Automatic Transmission................................5-26
Power Steering...........................................5-39
Windshield Washer......................................5-40
Fog Lamp Light..............................................3-71
Fog Lamps ....................................................3-37
Forward Collision Alert (FAC) System.................. 3-9
Front Axle......................................................5-52
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.................................. 5-6
Fuses
Fuses and Circuit Breakers.........................5-105
Rear Underseat Fuse Block.........................5-110
Underhood Fuse Block...............................5-106
Windshield Wiper.......................................5-104
5

G
Gage
Engine Coolant Temperature.........................3-67
Fuel..........................................................3-72
Speedometer..............................................3-59
Tachometer.................................................3-59
Garage Door Opener.......................................2-47
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-51
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp Wiring...........................................5-104
Headlamps....................................................3-31
Bulb Replacement.......................................5-53
Daytime Running Lamps...............................3-35
Flash-to-Pass..............................................3-12
Halogen Bulbs............................................5-53
High Intensity Discharge (HID) Lighting...........5-53
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-35Headlamps (cont.)
Washer......................................................3-15
Wiper Activated...........................................3-35
Head-Up Display (HUD)...................................3-40
Heated Seats............................................1-3, 1-4
Heated Steering Wheel..................................... 3-7
Heater...........................................................3-48
Highbeam On Light.........................................3-72
Highway Hypnosis...........................................4-25
Hill and Mountain Roads..................................4-25
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
I
Ignition Positions.............................................2-24
Inadvertent Power Battery Saver.......................3-40
Infants and Young Children, Restraints...............1-29
Ination - Tire Pressure...................................5-64
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-39
Cluster.......................................................3-58
6

J
Jump Starting.................................................5-45
K
Keyless Access System..................................... 2-4
Keyless Access System, Operation...................... 2-5
Keys............................................................... 2-3
L
Labeling, Tire Sidewall.....................................5-58
Lamps
Battery Load Management............................3-40
Exterior Lighting Battery Saver......................3-38
Fog ...........................................................3-37
Inadvertent Power Battery Saver....................3-40
Reading.....................................................3-40
Twilight Sentinel
®........................................3-37
LATCH System
Child Restraints...........................................1-37
Lifting Your Vehicle, Tires.................................5-79
Light
Airbag Readiness........................................3-60
Anti-Lock Brake System Warning...................3-65
Brake System Warning.................................3-64
Charging System.........................................3-63
Cruise Control.............................................3-72Light (cont.)
Engine Coolant Temperature Warning.............3-66
Fog Lamp ..................................................3-71
Highbeam On.............................................3-72
Lights On Reminder.....................................3-71
Low Tire Pressure Warning Light...................3-65
Malfunction Indicator....................................3-67
Oil Pressure...............................................3-70
Passenger Airbag Status Indicator..................3-61
Passenger Safety Belt Reminder....................3-60
Safety Belt Reminder...................................3-59
Security.....................................................3-71
TCS Warning Light......................................3-66
Traction Control System (TCS) Warning..........3-66
Lighting
Entry.........................................................3-39
Parade Dimming..........................................3-39
Limited-Slip Rear Axle.....................................4-11
Loading Your Vehicle.......................................4-32
Lockout Protection..........................................2-14
Locks
Door ..........................................................2-12
Lockout Protection.......................................2-14
Power Door ................................................2-12
Programmable Automatic Door Locks.............2-13
Rear Door Security Locks.............................2-13
Loss of Control...............................................4-17
Lumbar
Power Controls............................................. 1-2
7