2005 BUICK LESABRE electrical system

Safety Chains
You should always attach chains between your vehicle
and your trailer. Cross the safety chains under the
tongue of the trailer so that the tongue will not drop to
the road if it becomes separated from the hitch.
Instructions about safety chains may be provided by the
hitch manufacturer or by the trailer manufacturer.
Follow the manufacturer’s recommendation for attaching
safety chains and do not attach them to the bumper.
Always leave just enough slack so you can turn
with your rig. And, never allow safety chains to drag
on the ground.
Trailer Brakes
Does your trailer have its own brakes? Be sure to
read and follow the instructions for the trailer brakes
so you will be able to install, adjust and maintain
them properly.
Because you have anti-lock brakes, do not try to tap
into your vehicle’s brake system. If you do, both brake
systems will not work well, or at all.
Trailer Wiring Harness
All of the electrical circuits required for your trailer
lighting system can be accessed at the driver’s side rear
lamp connector. This connector is located under the
carpet on the rear corner of the trunk compartment.
Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you will want to
get to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connector, lamps,
tires and mirror adjustment. If the trailer has electric
brakes, start your vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure
the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as
you would when driving your vehicle without a trailer.
This can help you avoid situations that require
heavy braking and sudden turns.
4-41

If a Tire Goes Flat........................................5-69
Changing a Flat Tire.....................................5-70
Removing the Spare Tire and Tools................5-71
Removing the Flat Tire and Installing
the Spare Tire..........................................5-72
Storing a Flat or Spare Tire and Tools............5-77
Compact Spare Tire......................................5-78
Appearance Care............................................5-78
Fabric/Carpet...............................................5-79
Vinyl...........................................................5-81
Leather.......................................................5-81
Instrument Panel..........................................5-81
Interior Plastic Components............................5-81
Glass Surfaces.............................................5-81
Care of Safety Belts......................................5-82
Weatherstrips...............................................5-82
Washing Your Vehicle...................................5-82
Cleaning Exterior Lamps/Lenses.....................5-83
Finish Care..................................................5-83
Windshield and Wiper Blades.........................5-83Aluminum or Chrome-Plated Wheels................5-84
Tires...........................................................5-84
Sheet Metal Damage.....................................5-85
Finish Damage.............................................5-85
Underbody Maintenance................................5-85
Chemical Paint Spotting.................................5-85
Vehicle Care/Appearance Materials..................5-86
Vehicle Identication......................................5-87
Vehicle Identication Number (VIN).................5-87
Service Parts Identication Label.....................5-87
Electrical System............................................5-88
Add-On Electrical Equipment..........................5-88
Power Windows and Other Power Options.......5-88
Fuses and Circuit Breakers............................5-88
Engine Compartment Fuse Block....................5-89
Rear Underseat Fuse Block...........................5-91
Capacities and Specications..........................5-96
Normal Maintenance Replacement Parts..........5-97
Section 5 Service and Appearance Care
5-2

Jump Starting
If your vehicle’s battery has run down, you may want to
use another vehicle and some jumper cables to start
your vehicle. Be sure to use the following steps to do
it safely.
{CAUTION:
Batteries can hurt you. They can be dangerous
because:
They contain acid that can burn you.
They contain gas that can explode
or ignite.
They contain enough electricity to
burn you.
If you do not follow these steps exactly, some
or all of these things can hurt you.Notice:Ignoring these steps could result in costly
damage to your vehicle that would not be covered
by your warranty.
Trying to start your vehicle by pushing or pulling it
will not work, and it could damage your vehicle.
1. Check the other vehicle. It must have a 12-volt
battery with a negative ground system.
Notice:If the other vehicle’s system is not a 12-volt
system with a negative ground, both vehicles can
be damaged. Only use vehicles with 12-volt systems
with negative grounds to jump start your vehicle.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles are not touching
each other. If they are, it could cause a ground
connection you do not want. You would not be able
to start your vehicle, and the bad grounding
could damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake rmly on both vehicles involved in
the jump start procedure. Put an automatic
transaxle in PARK (P) or a manual transaxle in
NEUTRAL (N) before setting the parking brake.
5-40

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your
vehicle unless you check with your dealer rst.
Some electrical equipment can damage your
vehicle and the damage wouldn’t be covered by
your warranty. Some add-on electrical equipment
can keep other components from working as
they should.
Your vehicle has an airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-56.
Power Windows and Other
Power Options
Circuit breakers in the rear fuse block protect the power
windows and other power accessories. When the
current load is too heavy, the circuit breaker opens and
closes, protecting the circuit until the problem is xed
or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
You will nd a fuse puller clipped in both of the fuse
blocks. Snap the wide end of the fuse puller at the side
indentations and pull the fuse out.
The MaxiFuses are located in two fuse blocks,
one located in the engine compartment on the
passenger’s side and the other under the rear seat on
the driver’s side. If a MaxiFuse should blow, have
your vehicle serviced by your dealer immediately.
5-88

A
Accessory Power Outlets.................................3-22
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-88
Air Cleaner/Filter, Engine.................................5-18
Air Conditioning......................................3-24, 3-27
Airbag
Readiness Light..........................................3-37
Airbag Sensing and Diagnostic Module (SDM)...... 7-9
Airbag System................................................1-47
How Does an Airbag Restrain?......................1-53
Servicing Your Airbag-Equipped Vehicle..........1-56
What Makes an Airbag Inate?......................1-53
What Will You See After an Airbag Inates?....1-54
When Should an Airbag Inate?....................1-52
Where Are the Airbags?...............................1-50
Antenna, Diversity Antenna System...................3-84
Antenna, XM™ Satellite Radio
Antenna System..........................................3-85
Anti-Lock Brake System (ABS)........................... 4-7
Anti-Lock Brake, System Warning Light..............3-39
Appearance Care............................................5-78
Aluminum or Chrome-Plated Wheels..............5-84
Care of Safety Belts....................................5-82
Chemical Paint Spotting...............................5-85
Cleaning Exterior Lamps/Lenses....................5-83
Fabric/Carpet..............................................5-79
Finish Care.................................................5-83
Finish Damage............................................5-85Appearance Care (cont.)
Glass Surfaces............................................5-81
Instrument Panel.........................................5-81
Interior Plastic Components...........................5-81
Leather......................................................5-81
Sheet Metal Damage...................................5-85
Tires..........................................................5-84
Underbody Maintenance...............................5-85
Vehicle Care/Appearance Materials................5-86
Vinyl..........................................................5-81
Washing Your Vehicle...................................5-82
Weatherstrips..............................................5-82
Windshield and Wiper Blades........................5-83
Ashtrays........................................................3-23
Audio System(s).............................................3-56
Audio Steering Wheel Controls......................3-81
Care of Your Cassette Tape Player................3-83
Care of Your CD Player...............................3-84
Care of Your CDs........................................3-84
Chime Level Adjustment...............................3-85
Diversity Antenna System.............................3-84
Personal Choice Radio Controls....................3-80
Radio with Cassette and CD.........................3-65
Radio with CD............................................3-57
Setting the Time..........................................3-57
Theft-Deterrent Feature................................3-81
Trunk-Mounted CD Changer..........................3-77
Understanding Radio Reception.....................3-82
XM™ Satellite Radio Antenna System............3-85
1

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

Power (cont.)
Electrical System.........................................5-88
Inadvertent Battery Saver.............................3-20
Lumbar Controls........................................... 1-3
Reclining Seatback........................................ 1-6
Retained Accessory (RAP)............................2-23
Seat............................................................ 1-2
Steering Fluid.............................................5-34
Windows....................................................2-17
Programmable Automatic Door Locks.................2-12
Programming the HomeLink
®Transmitter...........2-39
Q
Questions and Answers About Safety Belts.........1-12
R
Radiator Pressure Cap....................................5-26
Radios..........................................................3-56
Care of Your Cassette Tape Player................3-83
Care of Your CD Player...............................3-84
Care of Your CDs........................................3-84
Personal Choice Radio Controls....................3-80
Radio with Cassette and CD.........................3-65
Radio with CD............................................3-57
Setting the Time..........................................3-57
Theft-Deterrent............................................3-81Radios (cont.)
Trunk-Mounted CD Changer..........................3-77
Understanding Reception..............................3-82
Rainsense™ II Wipers....................................... 3-9
Rear Door Security Locks................................2-13
Rear Safety Belt Comfort Guides......................1-25
Rear Seat Passengers, Safety Belts..................1-21
Rearview Mirror, Automatic Dimming..................2-32
Rearview Mirror, Automatic Dimming with
Compass....................................................2-33
Rearview Mirrors.............................................2-32
Reclining Seatback, Power................................. 1-6
Reclining Seatbacks.......................................... 1-4
Recreational Vehicle Towing.............................4-36
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Removing the Flat Tire and Installing the
Spare Tire..................................................5-72
Removing the Spare Tire and Tools...................5-71
Replacement Bulbs.........................................5-53
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking Your Restraint Systems...................1-56
Replacing Restraint System Parts
After a Crash..........................................1-57
10