engine overheat BUICK LUCERNE 2008 Owner's Guide

If no coolant is visible in the surge tank, add coolant as
follows:
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
{CAUTION:
Adding only plain water to the cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. The vehicle’s
coolant warning system is set for the proper
coolant mixture. With plain water or the wrong
mixture, the engine could get too hot but you
would not get the overheat warning. The
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.
5-38

DDaytime Running Lamps..................................3-16
Defensive Driving............................................. 4-2
Delayed Entry Lighting.....................................3-18
Delayed Exit Lighting.......................................3-18
Delayed Locking.............................................2-11
DIC Compass.................................................3-54
Disc, MP3......................................................3-89
Doing Your Own Service Work........................... 5-4
Door
Delayed Locking..........................................2-11
Locks........................................................2-10
Power Door Locks.......................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-12
Driver Information Center (DIC).........................3-48
DIC Operation and Displays..........................3-49
DIC Vehicle Customization............................3-66
DIC Warnings and Messages........................3-56
Driving
At Night.....................................................4-11
Before a Long Trip......................................4-13
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Highway Hypnosis.......................................4-13
Hill and Mountain Roads..............................4-14
In Rain and on Wet Roads...........................4-12
Rocking Your Vehicle to Get it Out.................4-19
Winter........................................................4-15
Dual Automatic Climate Control System.............3-24E
EDR .............................................................7-17
Electrical System
Add-On Equipment.....................................5-105
Fuses and Circuit Breakers.........................5-105
Power Windows and Other Power Options....5-105
Rear Underseat Fuse Block.........................5-108
Underhood Fuse Block...............................5-106
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Light............3-44
Coolant......................................................5-24
Coolant Heater............................................2-24
Coolant Temperature Gage...........................3-43
Coolant Temperature Warning Light................3-42
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12
Exhaust.....................................................2-32
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-30
Overheating................................................5-28
Running While Parked..................................2-33
Starting......................................................2-22
Entry Lighting.................................................3-18
Event Data Recorders.....................................7-18
Extender, Safety Belt.......................................1-32
Exterior Lamps...............................................3-14
Exterior Lighting Battery Saver..........................3-17
4

O
Odometer......................................................3-34
Odometer, Trip...............................................3-34
Off-Road Recovery........................................... 4-9
Oil
Engine.......................................................5-15
Pressure Light.............................................3-46
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-33
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-19
OnStar
®System, see OnStar®Manual...............2-46
Operation, Universal Home Remote System........2-50
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-30
Outlets
Accessory Power.........................................3-20
Outside
Automatic Dimming Heated Mirror..................2-38
Convex Mirror.............................................2-38
Power Mirrors.............................................2-37
Overheated Engine Protection Operating Mode . . . 5-30
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-102
Panic Brake Assist............................................ 4-7
Park Aid........................................................2-39
Park Brake....................................................2-27
Park (P)
Shifting Into................................................2-28
Shifting Out of............................................2-31
Park Tilt Mirrors..............................................2-38
Parking
Assist........................................................2-39
Over Things That Burn.................................2-32
Passenger Airbag Status Indicator.....................3-36
Passenger Compartment Air Filter.....................3-30
Passenger Sensing System..............................1-67
Passing........................................................... 4-9
PASS-Key
®III+..............................................2-18
PASS-Key®III+ Operation................................2-19
Perchlorate Materials Requirements, California...... 5-4
Perimeter Lighting...........................................3-18
Power
Door Locks.................................................2-10
Electrical System.......................................5-105
Inadvertent Battery Saver.............................3-19
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-22
9