2006 CADILLAC DTS engine overheat

{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
1. You can remove the
coolant surge tank
pressure cap when the
cooling system,
including the coolant
surge tank pressure
cap and upper radiator
hose, is no longer hot.
Turn the pressure cap slowly counterclockwise. If
you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
5-31

E
Electrical System
Add-On Equipment......................................5-92
Fuses and Circuit Breakers...........................5-93
Headlamp Wiring.........................................5-92
Power Windows and Other Power Options.........5-93
Rear Underseat Fuse Block..........................5-96
Underhood Fuse Block.................................5-93
Windshield Wiper Fuses...............................5-92
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-37
Check and Service Engine Soon Light............3-66
Coolant......................................................5-22
Coolant Heater............................................2-25
Coolant Temperature Gage...........................3-65
Coolant Temperature Warning Light................3-65
Engine Compartment Overview......................5-12
Exhaust.....................................................2-33
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheated Protection Operating Mode...........5-27
Overheating................................................5-25
Starting......................................................2-24
Entry Lighting.................................................3-36
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-29Exterior Lamps...............................................3-30
Exterior Lighting Battery Saver..........................3-35
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-89
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass.................................................3-13
Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-81
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-33
Windshield Washer......................................5-34
Fog Lamp Light..............................................3-69
Fog Lamp Light, Rear.....................................3-69
Fog Lamps....................................................3-35
Forward Collision Alert (FAC) System.................. 3-9
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
5

Mirrors
Automatic Dimming Mirror with Intellibeam™,
OnStar
®, and Compass.............................2-35
Automatic Dimming Rearview with Compass....2-39
Automatic Dimming Rearview with OnStar
®
and Compass..........................................2-37
Manual Rearview Mirror with Compass
and Temperature........................................ 1-8
Memory.....................................................2-52
Outside Automatic Dimming Mirror.................2-42
Outside Convex Mirror.................................2-42
Outside Curb View Assist Mirror....................2-42
Outside Heated Mirrors................................2-42
Outside Power Foldaway Mirrors....................2-41
MyGMLink.com................................................ 7-3
N
Navigation/Radio System, see
Navigation Manual.....................................3-121
New Vehicle Break-In......................................2-23
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-57
Off-Road Recovery..........................................4-13
Oil
Engine.......................................................5-13
Pressure Light.............................................3-68
Oil, Engine Oil Life System..............................5-16
Older Children, Restraints................................1-30
Online Owner Center........................................ 7-3
OnStar
®System, see OnStar®Manual...............2-43
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-50
Outlet(s), Accessory Power...............................3-42
Outside
Automatic Dimming Mirror.............................2-42
Convex Mirror.............................................2-42
Curb View Assist Mirror................................2-42
Heated Mirrors............................................2-42
Power Foldaway Mirrors...............................2-41
Overheated Engine Protection Operating Mode.....5-27
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
9