2005 BUICK LESABRE check engine light

{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. You will need a
well-charged battery to restart the vehicle, and possibly
for signaling later on with your headlamps. Let the
heater run for a while.
Then, shut the engine off and close the window almost
all the way to preserve the heat. Start the engine
again and repeat this only when you feel really
uncomfortable from the cold. But do it as little as
possible. Preserve the fuel as long as you can. To help
keep warm, you can get out of the vehicle and do
some fairly vigorous exercises every half hour or so until
help comes.
4-29

How to Add Fluid
Refer to the Maintenance Schedule to determine
what kind of transaxle uid to use. See
Part D: Recommended Fluids and Lubricants
on page 6-24.
If the uid level is low, add only enough of the proper
uid to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough uid at the
dipstick hole to bring it to the proper level.
It does not take much uid, generally less than
one pint (0.5 L).Do not overll.
Notice:Use of automatic transaxle uid labeled
other than DEXRON
®-III, Approved for the
H-Specication, may damage your vehicle, and the
damages may not be covered by your warranty.
Always use automatic transaxle uid labeled
DEXRON
®-III, Approved for the H-Specication.
3. After adding uid, recheck the uid level as
described under “How to Check,” earlier in
this section.
4. When the correct uid level is obtained, push the
dipstick back in all the way.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed to
remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-26.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®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 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.
5-24

Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixtureat the coolant recovery
tank,but be careful not to spill it.
{CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will
almost never have to add coolant at the
radiator. Never turn the radiator pressure
cap — even a little — when the engine and
radiator are hot.
{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.
Occasionally check the coolant level in the radiator. For
information on how to add coolant to the radiator,
seeCooling System on page 5-28.
Radiator Pressure Cap
Notice:The radiator cap on your vehicle is a
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap line
up with the overow tube on the radiator ller neck.
SeeEngine Compartment Overview on page 5-12for
more information on location.
Engine Overheating
You will nd a warning light about a hot engine as well
as an engine coolant temperature gage on your
vehicle’s instrument panel cluster.
5-26

{CAUTION:
Using a match near a battery can cause battery
gas to explode. People have been hurt doing
this, and some have been blinded. Use a
ashlight if you need more light.
Be sure the battery has enough water. You do
not need to add water to the battery installed
in your new vehicle. But if a battery has ller
caps, be sure the right amount of uid is there.
If it is low, add water to take care of that rst.
If you do not, explosive gas could be present.
Battery uid contains acid that can burn you.
Do not get it on you. If you accidentally get it
in your eyes or on your skin, ush the place
with water and get medical help immediately.
{CAUTION:
Fans or other moving engine parts can injure
you badly. Keep your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose or
missing insulation. If they do, you could get a
shock. The vehicles could be damaged too.
Before you connect the cables, here are some
basic things you should know. Positive (+) will go to
positive (+) or to a remote positive (+) terminal if
the vehicle has one. Negative (−) will go to a heavy,
unpainted metal engine part or to a remote
negative (−) terminal if the vehicle has one.
Do not connect positive (+) to negative (−)oryou
will get a short that would damage the battery
and maybe other parts too. And do not connect the
negative (−) cable to the negative (−) terminal on
the dead battery because this can cause sparks.
5-42

Automatic Transaxle
Fluid..........................................................5-21
Operation...................................................2-25
B
Battery..........................................................5-38
Exterior Lighting Battery Saver......................3-17
Inadvertent Power Saver..............................3-20
Load Management.......................................3-20
Battery Warning Light......................................3-38
Before Leaving on a Long Trip.........................4-22
Brake
Anti-Lock Brake System (ABS)........................ 4-7
Emergencies................................................ 4-8
Parking......................................................2-27
System Inspection.......................................6-23
System Warning Light..................................3-38
Brakes..........................................................5-35
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-21
Bulb Replacement...........................................5-48
Front Turn Signal Lamps..............................5-50
Halogen Bulbs............................................5-48
Headlamp Aiming........................................5-45
Headlamps.................................................5-49Bulb Replacement (cont.)
Replacement Bulbs......................................5-53
Taillamps and Back-Up Lamps.......................5-51
Taillamps, Turn Signal, and Stoplamps............5-50
Buying New Tires...........................................5-65C
California Fuel.................................................. 5-6
Canadian Owners................................................ ii
Capacities and Specications............................5-96
Carbon Monoxide...................2-14, 2-31, 4-25, 4-38
Care of
Safety Belts................................................5-82
Your Cassette Tape Player............................3-83
Your CD Player...........................................3-84
Your CDs ...................................................3-84
CD Changer, Trunk-Mounted............................3-77
Center Console Storage Area...........................2-43
Center Front Passenger Position, Safety Belts....1-20
Chains, Tire...................................................5-68
Check
Engine Light...............................................3-41
Tire Pressure System...................................5-62
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-85
2

Customer Assistance Information (cont.)
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United
States Government...................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Delayed Entry Lighting.....................................3-18
Delayed Exit Lighting.......................................3-18
Delayed Locking.............................................2-11
Diversity Antenna System.................................3-84
Doing Your Own Service Work........................... 5-4
Door
Central Door Unlocking System.....................2-11
Delayed Locking..........................................2-11
Door Ajar Reminder.....................................2-11
Locks........................................................2-10
Power Door Locks.......................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-13
Driver
Position, Safety Belt.....................................1-13Driver Information Center (DIC).........................3-47
DIC Controls and Displays............................3-47
DIC Vehicle Personalization..........................3-51
DIC Warnings and Messages........................3-50
Driving
At Night.....................................................4-16
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-24
In Rain and on Wet Roads...........................4-17
Rocking Your Vehicle to Get it Out.................4-30
Winter........................................................4-25
Dual Automatic Climate Control System.............3-27
E
Electrical System
Add-On Equipment......................................5-88
Engine Compartment Fuse Block...................5-89
Fuses and Circuit Breakers...........................5-88
Power Windows and Other Power Options......5-88
Rear Underseat Fuse Block..........................5-91
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-38
Check and Service Engine Soon Light............3-41
4

Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-43
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-7
Headlamp
Aiming.......................................................5-45
Horizontal Aiming.........................................5-46
Vertical Aiming............................................5-47
Headlamps....................................................5-49
Bulb Replacement.......................................5-48
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-8
Front Turn Signal Lamps..............................5-50
Halogen Bulbs............................................5-48
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Wiper Activated...........................................3-14
Head-Up Display (HUD)...................................3-20
Heated Seats................................................... 1-4
Heater...........................................................3-24
Heater...........................................................3-27Highbeam On Light.........................................3-45
Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-24
HomeLink
®Transmitter....................................2-38
HomeLink®Transmitter, Programming................2-39
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
I
Ignition Positions.............................................2-22
Inadvertent Power Battery Saver.......................3-20
Infants and Young Children, Restraints...............1-31
Ination -- Tire Pressure..................................5-60
Inspection
Brake System.............................................6-23
Engine Cooling System................................6-23
Exhaust System..........................................6-22
Fuel System...............................................6-23
Part C - Periodic Maintenance.......................6-22
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-22
Throttle System...........................................6-23
6

Locks
Central Door Unlocking System.....................2-11
Delayed Locking..........................................2-11
Door..........................................................2-10
Lockout Protection.......................................2-14
Power Door................................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-13
Long Trip/Highway Scheduled Maintenance........6-13
Loss of Control...............................................4-14
Lumbar
Manual Controls............................................ 1-3
Power Controls............................................. 1-3
M
Maintenance, Normal Replacement Parts............5-97
Maintenance Schedule
At Each Fuel Fill.........................................6-18
At Least Once a Month................................6-18
At Least Once a Year..................................6-19
At Least Twice a Year..................................6-19
Brake System Inspection..............................6-23
Engine Cooling System Inspection.................6-23
Exhaust System Inspection...........................6-22
Fuel System Inspection................................6-23
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2Maintenance Schedule (cont.)
Long Trip/Highway Scheduled Maintenance.....6-13
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-18
Part C - Periodic Maintenance Inspections......6-22
Part D - Recommended Fluids
and Lubricants.........................................6-24
Part E - Maintenance Record........................6-25
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-22
Throttle System Inspection............................6-23
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-41
Manual Lumbar Controls.................................... 1-3
Manual Seats................................................... 1-2
Memory Mirrors..............................................2-45
Memory Seat.................................................2-45
Message
DIC Warnings and Messages........................3-50
Mirrors
Automatic Dimming Rearview........................2-32
Automatic Dimming Rearview with Compass....2-33
Manual Rearview Mirror................................2-32
Memory.....................................................2-45
Outside Automatic Dimming Heated Mirror......2-36
8