1999 BUICK LESABRE lights

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4-37
When you're turning with a trailer, make wider turns
than normal. Do this so your trailer won't strike soft
shoulders, curbs, road signs, trees or other objects.
Avoid jerky or sudden maneuvers. Signal well
in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal flasher and/or extra wiring. Check
with your dealer. The arrows on your instrument panel
will flash whenever you signal a turn or lane change.
Properly hooked up, the trailer lamps will also flash,
telling other drivers you're about to turn, change lanes
or stop.
When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind you
are seeing your signal when they are not. It's important
to check occasionally to be sure the trailer bulbs are
still working.
Your vehicle has bulb warning lights. When you plug a
trailer lighting system into your vehicle's lighting
system, its bulb warning lights may not let you know if
one of your lamps goes out. So, when you have a trailer
lighting system plugged in, be sure to check your
vehicle and trailer lamps from time to time to be surethey're all working. Once you disconnect the trailer
lamps, the bulb warning lights again can tell you if one
of your vehicle lamps is out.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
Parking on Hills
CAUTION:
You really should not park your vehicle, with a
trailer attached, on a hill. If something goes
wrong, your rig could start to move. People can
be injured, and both your vehicle and the trailer
can be damaged.
But if you ever have to park your rig on a hill, here's
how to do it:
1. Apply your regular brakes, but don't shift into
PARK (P) yet.

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6-22
Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa)
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 overflow tube on the radiator
filler neck.
When you replace your radiator pressure cap, a GM cap
is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
Engine Coolant
The cooling system in your vehicle is filled 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 first, 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, see ªEngine Overheatingº in
the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.

First Edition for Buick LeSabre Owner's Manual ± 1999
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9-6
Labels
Certification 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification/Tire 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-57 . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information 4-30 . . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-57 . . . . . . . . . . . . . . . . . . .
Lamps 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entry Lighting, Delayed 2-43 . . . . . . . . . . . . . . . . . . . . . . . .
Exit Lighting, Delayed 2-43 . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illuminated Entry 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Reminder 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Perimeter Lighting 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theater Dimming 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle 2-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle with the Engine Running 2-29 . . . . . . .
Light Sensor, Twilight Sentinel 2-42 . . . . . . . . . . . . . . . . . . . .
Lighter 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lights
Air Bag Readiness 1
-20, 2-60 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning. 2-62, 4-7 . . . . . . . . . . .
Battery Warning 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake System Warning 2-61 . . . . . . . . . . . . . . . . . . . . . . . . .
Change Oil Soon 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Engine 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Oil Level 2-68 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Warning 2-64 . . . . . . . . . . . . .
Engine Oil Pressure Light 2-67 . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Belt Reminder 2
-59 . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction Control System Warning 2-63, 4-9 . . . . . . . . . . . .
Traction Off Warning 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lockout Protection 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinders 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Locking 2-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transaxle Lock Check 7-36 . . . . . . . . . . . . . . . . . .
Key Lock Cylinder Service 7-34 . . . . . . . . . . . . . . . . . . . . .
Lockout Protection 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Door 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Door 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Door Security 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel Light 2-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants and Fluids 7-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Service, Body 7-34 . . . . . . . . . . . . . . . . . . . . . . . .
Magnasteer
4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance, Normal Replacement Parts 6-65 . . . . . . . . . . . .
Maintenance Record 7-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Trip/Highway Definition 7-6 . . . . . . . . . . . . . . . . . . .
Long Trip/Highway Intervals 7-6 . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-33 . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-37 . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-39 . . . . . . . . . . . . .
Scheduled Maintenance Services 7-4 . . . . . . . . . . . . . . . . . .
Short Trip/City Definition 7-5 . . . . . . . . . . . . . . . . . . . . . . .
Short Trip/City Intervals 7-5 . . . . . . . . . . . . . . . . . . . . . . . .

First Edition for Buick LeSabre Owner's Manual ± 1999
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9-12
Warning Devices 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Lights, Gages and Indicators 2-59 . . . . . . . . . . . . . . .
Warranty Information 8-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer Fluid, Windshield 6-26 . . . . . . . . . . . . . . . . . . . . . . . .
Washing Your Vehicle 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrips 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel
Alignment 6
-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nut Torque 5-29, 6-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Cover Removal 5-23 . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Nut Cap Removal 5-23 . . . . . . . . . . . . . . . . . . . . . . .
Wire Wheel Cover Removal 5-24 . . . . . . . . . . . . . . . . . . . .
Wrench 5-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Lock 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Windows 2
-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Express-Down 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Washer 2-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Level Check 7-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Wiper 2-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blade Cleaning 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blade Replacement 6-40 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winter Driving 4-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper Blade Check 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper Blades, Cleaning 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring, Headlamp 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wrecker Towing 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wrench, Wheel 5-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .