2007 BUICK LACROSSE coolant temperature

REMOTE START DISABLED
If your vehicle has the remote start feature, this
message displays if a remote start attempt is
unsuccessful. This may be caused if any of the
following conditions are true when a remote
start attempt is made:
The remote start system is disabled through
the DIC.
The key is in the ignition.
The hood or the doors are not closed.
There is an emission control system
malfunction.
The engine coolant temperature is too high.
The oil pressure is low.
The hazard warning ashers are turned on.
The maximum number of remote starts
or remote start attempts between ignition
cycles has been reached.
The content theft-deterrent alarm is on while
attempting to remote start the vehicle.
See “REMOTE START” underDIC Vehicle
Personalization on page 229and “Remote Vehicle
Start” underRemote Keyless Entry (RKE)
System Operation on page 90for more
information.
RIGHT FRONT TURN LAMP OUT
This message displays when the right front turn
signal bulb needs to be replaced. SeeFront Turn
Signal and Parking Lamps on page 397.
This message displays while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine is
turned off. It also re-displays for two seconds if the
message has been acknowledged, but the
condition still exists when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
221

Engine Coolant
The cooling system in the vehicle is lled with
DEX-COOL®engine coolant. This coolant
is designed to remain in the vehicle for ve years
or 150,000 miles (240 000 km), whichever
occurs rst, if only DEX-COOL
®extended life
coolant is added.
The following explains the cooling system and
how to add coolant when it is low. If there is
a problem with engine overheating or if coolant
needs to be added to the radiator, seeEngine
Overheating on page 367.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®engine coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core, or
radiator corrosion. In addition, the engine
coolant may require changing sooner, at the rst
maintenance service after each 30,000 miles
(50 000 km) or 24 months, whichever occurs
rst. Any repairs would not be covered by your
warranty. Always use DEX-COOL
®(silicate-free)
coolant in your vehicle.
363

Radiator Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is properly
and tightly secured.
The radiator pressure cap is located in the front
of the engine compartment on the passenger’s
side of the vehicle. SeeEngine Compartment
Overview on page 350for more information
on location.
Engine Overheating
There is a coolant temperature gage and a
warning light on the instrument panel cluster that
indicate an overheated engine condition. See
Engine Coolant Temperature Gage on page 189
andEngine Coolant Temperature Warning Light
on page 188for more information.
In addition, if your vehicle is equipped with a
Driver Information Center (DIC), you will nd an
ENGINE COOLANT HOT and a REDUCED
POWER STOP WHEN SAFE message displayed
on the DIC. SeeDIC Warnings and Messages
on page 208for more information.
367

Overheated Engine Protection
Operating Mode
This emergency operating mode allows your
vehicle to be driven to a safe place in an emergency
situation. If an overheated engine condition exists,
an overheat protection mode which alternates ring
groups of cylinders helps prevent engine damage.
In this mode, you will notice a signicant loss in
power and engine performance. The REDUCED
POWER STOP WHEN SAFE message will come
on in the Driver Information Center (DIC), if the
vehicle has one, along with the engine coolant
temperature warning light on the instrument panel,
to indicate the vehicle has entered overheated
engine protection operating mode. The temperature
gage will also indicate an overheat condition exists.
Driving extended miles (km) and/or towing a trailer
in the overheat protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine
damage, allow the engine to cool before
attempting any repair. The engine oil will
be severely degraded. Repair the cause of
coolant loss, change the oil and reset the
oil life system. SeeEngine Oil on page 353.
Cooling System
When you decide it is safe to lift the hood, this is
what you will see:
A. Coolant Recovery Tank
B. Radiator Pressure Cap
C. Electric Engine Cooling Fans
3.8L V6 Engine
370

Windshield Washer Fluid
What to Use
When you need windshield washer uid, be sure
to read the manufacturer’s instructions before
use. If you will be operating your vehicle in an area
where the temperature may fall below freezing,
use a uid that has sufficient protection against
freezing.
Adding Washer Fluid
When the windshield washer uid is low, a low
washer uid light may appear on the instrument
panel cluster. SeeLow Washer Fluid Warning
Light on page 197for more information.
In addition, if your vehicle has a Driver Information
Center (DIC), the LOW WASHER FLUID
message will display when the uid level is low.
SeeDIC Warnings and Messages on page 208
for more information.Open the cap with the
washer symbol on it.
Add washer uid until
the tank is full. See
Engine Compartment
Overview on page 350
for reservoir location.
Notice:
When using concentrated washer uid,
follow the manufacturer’s instructions
for adding water.
Do not mix water with ready-to-use washer
uid. Water can cause the solution to
freeze and damage your washer uid tank
and other parts of the washer system.
Also, water does not clean as well
as washer uid.
Fill your washer uid tank only
three-quarters full when it is very cold.
This allows for expansion if freezing
occurs, which could damage the tank if
it is completely full.
Do not use engine coolant (antifreeze) in
your windshield washer. It can damage
your washer system and paint.
380

(h)Change automatic transaxle 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 found in taxi, police, or
delivery service.
(i)Drain, ush, and rell cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 363 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)Check throttle system for interference or
binding and for damaged or missing parts. Replace
parts as needed. Replace any components that
have high effort or excessive wear. Do not
lubricate accelerator or cruise control cables.(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)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(m)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 470.
466

Cleaning (cont.)
Underbody Maintenance........................... 446
Washing Your Vehicle.............................. 442
Weatherstrips........................................... 442
Windshield and Wiper Blades................... 444
Climate Control System............................... 168
Air Filter, Passenger Compartment........... 178
Dual Automatic......................................... 172
Outlet Adjustment..................................... 177
Collision Damage Repair............................. 490
Comfort Guides, Rear Safety Belt................. 35
Compact Spare Tire.................................... 437
Compass..................................................... 206
Content Theft-Deterrent............................... 104
Control of a Vehicle..................................... 290
Convenience Net......................................... 142
Coolant
Engine Temperature Gage........................ 189
Engine Temperature Warning Light........... 188
Heater, Engine......................................... 112
Low Warning Light................................... 189
Cooling System........................................... 370
Courtesy Lamps.......................................... 161
Cruise Control............................................. 154
Cruise Control Light.................................... 195
Cupholder(s)................................................ 141Customer Assistance Information
Courtesy Transportation........................... 487
Customer Assistance for Text Telephone
(TTY) Users.......................................... 482
Customer Assistance Offices.................... 482
Customer Satisfaction Procedure.............. 478
GM Mobility Reimbursement Program...... 483
Reporting Safety Defects to
General Motors..................................... 495
Reporting Safety Defects to the
Canadian Government.......................... 494
Reporting Safety Defects to the
United States Government.................... 494
Roadside Assistance Program.................. 484
Service Publications Ordering
Information........................................... 495
D
Daytime Running Lamps/Automatic
Headlamp System.................................... 159
Defensive Driving........................................ 286
Delayed Entry Lighting................................ 162
Delayed Exit Lighting................................... 162
Delayed Locking............................................ 97
DIC Compass.............................................. 206
Disc, MP3................................................... 272
500

Doing Your Own Service Work.................... 342
Door
Ajar Light................................................. 197
Automatic Door Lock................................. 98
Delayed Locking........................................ 97
Locks......................................................... 96
Power Door Locks..................................... 97
Programmable Automatic Door Unlock....... 98
Rear Door Security Locks.......................... 98
Driver
Position, Safety Belt................................... 22
Driver Information Center (DIC)................... 199
DIC Operation and Displays..................... 200
DIC Vehicle Personalization..................... 229
DIC Warnings and Messages................... 208
Driving
At Night................................................... 303
City.......................................................... 308
Defensive................................................. 286
Drunken................................................... 287
Freeway................................................... 309
Hill and Mountain Roads.......................... 312
In Rain and on Wet Roads...................... 305
Rocking Your Vehicle to Get it Out.......... 319
Winter...................................................... 314
Dual Automatic Climate Control System....... 172E
Electric Power Management........................ 163
Electrical System
Add-On Equipment................................... 449
Fuses and Circuit Breakers...................... 450
Headlamp Wiring..................................... 449
Instrument Panel Fuse Block................... 450
Power Windows and Other Power
Options................................................. 450
Underhood Fuse Block............................. 452
Windshield Wiper Fuses........................... 449
Engine
Air Cleaner/Filter...................................... 358
Battery..................................................... 384
Change Engine Oil Light.......................... 195
Check and Service Engine Soon Light..... 190
Coolant.................................................... 363
Coolant Heater......................................... 112
Coolant Temperature Gage...................... 189
Coolant Temperature Warning Light.......... 188
Drive Belt Routing.................................... 472
Engine Compartment Overview ................ 350
Exhaust................................................... 122
Oil ........................................................... 353
Oil Life System........................................ 356
501