2007 BUICK LACROSSE trailer

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

(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

Towing
Recreational Vehicle................................. 326
Towing a Trailer....................................... 327
Your Vehicle............................................. 325
Traction
Control System (TCS).............................. 294
Control System Warning Light.................. 187
Enhanced Traction System (ETS)............. 295
StabiliTrak
®System................................. 296
Transaxle
Fluid, Automatic....................................... 360
Transaxle Operation, Automatic................... 114
Trunk.......................................................... 100
Trunk Ajar Light........................................... 197
Turn and Lane-Change Signals................... 152
Turn Signal/Multifunction Lever.................... 152
U
Ultrasonic Rear Parking Assist (URPA)........ 164
Understanding Radio Reception................... 281
Uniform Tire Quality Grading....................... 421
Universal Home Remote System................. 130
Operation........................................131, 137
V
Vehicle
Control..................................................... 290
Damage Warnings....................................... 5
Loading.................................................... 319
Service Soon Light................................... 197
Symbols...................................................... 5
Vehicle Data Collection and Event Data
Recorders................................................ 489
Vehicle Identication
Number (VIN).......................................... 448
Service Parts Identication Label.............. 448
Vehicle Personalization
DIC .......................................................... 229
Ventilation Adjustment.................................. 177
Visors.......................................................... 104
511