2007 BUICK LACROSSE check engine light

Once you are moving on the freeway, make
certain you allow a reasonable following distance.
Expect to move slightly slower at night.
When you want to leave the freeway, move to the
proper lane well in advance. If you miss your
exit, do not, under any circumstances, stop and
back up. Drive on to the next exit.
The exit ramp can be curved, sometimes quite
sharply. The exit speed is usually posted. Reduce
your speed according to your speedometer, not
to your sense of motion. After driving for any
distance at higher speeds, you may tend to think
you are going slower than you actually are.
Before Leaving on a Long Trip
Make sure you are ready. Try to be well rested. If
you must start when you are not fresh — such
as after a day’s work — do not plan to make too
many miles that rst part of the journey. Wear
comfortable clothing and shoes you can easily
drive in.Is your vehicle ready for a long trip? If you keep it
serviced and maintained, it is ready to go. If it needs
service, have it done before starting out. Of course,
you will nd experienced and able service experts
in GM dealerships all across North America. They
will be ready and willing to help if you need it.
Here are some things you can check before a trip:
Windshield Washer Fluid:Is the reservoir
full? Are all windows clean inside and outside?
Wiper Blades:Are they in good shape?
Fuel, Engine Oil, Other Fluids:Have you
checked all levels?
Lamps:Are they all working? Are the lenses
clean?
Tires:They are vitally important to a safe,
trouble-free trip. Is the tread good enough
for long-distance driving? Are the tires
all inated to the recommended pressure?
Weather Forecasts:What is the weather
outlook along your route? Should you
delay your trip a short time to avoid a major
storm system?
Maps:Do you have up-to-date maps?
310

You can run the engine to keep warm, but be
careful.
{CAUTION:
Snow can trap exhaust gases under your
vehicle. This can cause deadly CO
(carbon monoxide) gas to get inside. CO
could overcome you and kill you. You
cannot see it or smell it, so you might not
know it is in your vehicle. Clear away
snow from around the base of your
vehicle, especially any that is blocking
your exhaust pipe. And check around
again from time to time to be sure snow
does not collect there.
Open a window just a little on the side of
the vehicle that is away from the wind.
This will help keep CO out.
Run your engine only as long as you must. This
saves fuel. When you run the engine, make it go a
little faster than just idle. That is, push the
accelerator slightly. This uses less fuel for the
heat that you get and it keeps the battery charged.
317

If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will
provide easier cold starting and better protection
for the engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM
Standard GM6094M are all you will need for
good performance and engine protection.
Engine Oil Life System
When to Change Engine Oil
Your vehicle has a computer system that lets you
know when to change the engine oil and lter.
This is based on engine revolutions and engine
temperature, and not on mileage. Based on driving
conditions, the mileage at which an oil change
will be indicated can vary considerably. For the oil
life system to work properly, you must reset the
system every time the oil is changed.When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A change engine oil light or, if
your vehicle has the Driver Information Center
(DIC), a CHANGE OIL SOON message will come
on. SeeChange Engine Oil Light on page 195
orDIC Warnings and Messages on page 208.
Change the oil as soon as possible within the next
600 miles (1 000 km). It is possible that, if you
are driving under the best conditions, the oil
life system may not indicate that an oil change is
necessary for over a year. However, the engine
oil and lter must be changed at least once a
year and at this time the system must be reset.
Your dealer has GM-trained service people
who will perform this work using genuine GM parts
and reset the system. It is also important to
check your oil regularly and keep it at the
proper level.
If the system is ever reset accidentally, you must
change the oil at 3,000 miles (5 000 km) since
the last oil change. Remember to reset the oil life
system whenever the oil is changed.
356

Scheduled Maintenance
When the change engine oil light or CHANGE OIL
SOON DIC message comes on, it means that
service is required for your vehicle. Have
your vehicle serviced as soon as possible within
the next 600 miles (1 000 km). It is possible that, if
you are driving under the best conditions, the
engine oil life system may not indicate that vehicle
service is necessary for over a year. However,
the engine oil and lter must be changed at least
once a year and at this time the system must
be reset. Your GM Goodwrench
®dealer has
GM-trained service technicians who will perform
this work using genuine GM parts and reset
the system.
If the engine oil life system is ever reset
accidentally, you must service your vehicle within
3,000 miles (5 000 km) since the last service.
Remember to reset the oil life system whenever
the oil is changed. SeeEngine Oil Life System on
page 356for information on the Engine Oil Life
System and resetting the system.When the light or message appears, certain
services, checks, and inspections are required.
Required services are described in the following
for “MaintenanceI” and “MaintenanceII.”
Generally, it is recommended that the rst service
be MaintenanceI, the second service be
MaintenanceII, and that you alternate
MaintenanceIand MaintenanceIIthereafter.
However, in some cases, MaintenanceIImay be
required more often.
MaintenanceI— Use MaintenanceIif the light
or message comes on within 10 months since
the vehicle was purchased or MaintenanceII
was performed.
MaintenanceII— Use MaintenanceIIif the
previous service performed was MaintenanceI.
Always use MaintenanceIIwhenever the light
or message comes on 10 months or more since
the last service or if the light or message has
not come on at all for one year.
462

C
Calibration................................................... 206
California Fuel............................................. 344
California Proposition 65 Warning................ 341
Canadian Owners........................................... 3
Capacities and Specications...................... 454
Carbon Monoxide..............100, 122, 314, 327
Care of
Safety Belts............................................. 442
Your CD Player........................................ 282
Your CDs ................................................. 282
CD, MP3 ..................................................... 272
Center Console Storage Area...................... 142
Center Front Passenger Position,
Safety Belts............................................... 31
Center Seat.................................................. 14
Chains, Tire................................................. 424
Charging System Light................................ 185
Check
Engine Light............................................ 190
Check Gas Cap Light.................................. 199
Checking Things Under the Hood................ 348
Chemical Paint Spotting.............................. 446Child Restraints
Child Restraint Systems............................. 45
Infants and Young Children........................ 42
Lower Anchors and Tethers for Children..... 51
Older Children........................................... 39
Securing a Child Restraint in a Rear
Seat Position.......................................... 58
Securing a Child Restraint in the Center
Front Seat Position................................. 61
Securing a Child Restraint in the Right
Front Seat Position................................. 61
Where to Put the Restraint........................ 50
Chime Level Adjustment .............................. 284
Cigarette Lighter.......................................... 168
Cleaning
Aluminum or Chrome-Plated Wheels........ 444
Exterior Lamps/Lenses............................. 443
Fabric/Carpet........................................... 440
Finish Care.............................................. 443
Inside of Your Vehicle .............................. 438
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 441
Leather.................................................... 441
Tires........................................................ 445
499

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

Engine (cont.)
Overheated Protection Operating Mode.... 370
Overheating............................................. 367
Reduced Power Light............................... 196
Starting.................................................... 111
Enhanced Traction System (ETS)................ 295
Entry Lighting.............................................. 161
Event Data Recorders (EDR)...................... 489
Extender, Safety Belt..................................... 38
Exterior Lamps............................................ 158
Exterior Lighting Battery Saver.................... 160
F
Filter
Engine Air Cleaner................................... 358
Finish Damage............................................ 446
Flashers, Hazard Warning........................... 150
Flash-to-Pass.............................................. 153
Flat Tire...................................................... 425
Flat Tire, Changing...................................... 426
Flat Tire, Storing......................................... 435Fluid
Automatic Transaxle................................. 360
Power Steering........................................ 378
Windshield Washer.................................. 380
Fog Lamps.................................................. 160
Folding Rear Seat......................................... 14
Fuel............................................................ 343
Additives.................................................. 344
California Fuel.......................................... 344
Check Gas Cap Light.............................. 199
Filling a Portable Fuel Container.............. 348
Filling Your Tank...................................... 346
Fuels in Foreign Countries....................... 345
Gage....................................................... 198
Gasoline Octane...................................... 343
Gasoline Specications............................ 344
Low Warning Light................................... 198
Fuses
Fuses and Circuit Breakers...................... 450
Instrument Panel Fuse Block................... 450
Underhood Fuse Block............................. 452
Windshield Wiper..................................... 449
502

G
Gage
Engine Coolant Temperature.................... 189
Fuel......................................................... 198
Speedometer........................................... 181
Tachometer.............................................. 181
Garage Door Opener................................... 130
Gasoline
Octane..................................................... 343
Specications........................................... 344
Glove Box................................................... 141
GM Mobility Reimbursement Program.......... 483
H
Hazard Warning Flashers............................ 150
Head Restraints............................................ 13
Headlamp
Aiming..................................................... 391
Headlamp Wiring......................................... 449
Headlamps
Bulb Replacement.................................... 394
Daytime Running Lamps/Automatic
Headlamp System................................ 159Headlamps (cont.)
Flash-to-Pass........................................... 153
Front Turn Signal and Parking Lamps...... 397
Halogen Bulbs......................................... 394
Headlamps and Sidemarker Lamps.......... 395
High/Low Beam Changer......................... 153
Suggested Light....................................... 196
Headlamps and Sidemarker Lamps............. 395
Heated Seats................................................ 10
Heater......................................................... 168
Heater......................................................... 172
Highbeam On Light..................................... 196
Highway Hypnosis....................................... 311
Hill and Mountain Roads............................. 312
Hood
Checking Things Under............................ 348
Release................................................... 349
Horn............................................................ 150
How to Use This Manual ................................ 3
How to Wear Safety Belts Properly............... 21
503