1999 BUICK LESABRE radiator cap

yellowblue
6-25
Adding Coolant
If you need more coolant, add the proper DEX
-COOL

coolant mixture at 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. Don't spill coolant on a hot engine.
Power Steering Fluid
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.

Short Trip/City Scheduled Maintenance
yellowblue
7-22
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
cooling system and pressure cap.
An Emission Control Service. ACTUAL
SERVICED BY:MILEAGE
DATE

Long Trip/Highway Scheduled Maintenance
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7-32
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service.ACTUAL
SERVICED BY:MILEAGE
DATE

yellowblue
7-37
Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall). You should let your dealer's
service department or other qualified service center do
these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. See ªService and Owner
Publicationsº in the Index.
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook
-up, binding, leaks,
cracks, chafing, etc. Clean and then inspect the drive
axle boot seals for damage, tears or leakage. Replace
seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out
-of-position parts as well as open seams,
holes, loose connections or other conditions which could
cause a heat build
-up in the floor pan or could let
exhaust fumes into the vehicle. See ªEngine Exhaustº in
the Index.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they are
cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the outside
of the radiator and air conditioning condenser. To help
ensure proper operation, a pressure test of the cooling
system and pressure cap is recommended at least once
a year.
Throttle System Inspection
Inspect the 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 and
cruise control cables.

First Edition for Buick LeSabre Owner's Manual ± 1999
yellowblue
9-8
Power
Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-50 . . . . . . . . . . . . . . . . . . . . . . . .
Seat 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-17 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publications, Service and Owner 8-10, 8-11, 8-12 . . . . . . . . .
Radiator 5-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios 3-12, 3-14, 3-17, 3-21, 3-25 . . . . . . . . . . . . . . . . . . .
Rain, Driving In 4-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Door Security Locks 2
-8 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside Seat Position 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Comfort Guides 1-29 . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal Bulb Replacement 6-39 . . . . . . . . . . . . . . . . . .
Window Defogger 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rearview Mirror 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night 2-46 . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night with Reading Lamps 2-46 . . . . . . . . . . . .
With Compass 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reclining Front Seatbacks 1
-3 . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-39 . . . . . . . . . . . . . . .
Recovery Tank, Coolant 5-14 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-29 . . . . . . . . . . . . . . . . . . . . . .
Refrigerants, Air Conditioning 6-64 . . . . . . . . . . . . . . . . . . . .
Remote
Trunk Release 2
-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk Release Lockout 2-15 . . . . . . . . . . . . . . . . . . . . . . . .
Remote Keyless Entry 2-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instant Alarm 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Personal Choice 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resynchronization 2-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Feedback 2-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement
Bulbs 6
-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 6-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Safety Belts 1-50 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reporting Safety Defects 8-9 . . . . . . . . . . . . . . . . . . . . . . . . . .
Restraints
Checking 1
-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Child 1-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Parts After a Crash 1-50 . . . . . . . . . . . . . . . . . . .
System Check 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse, Automatic Transaxle 2-25 . . . . . . . . . . . . . . . . . . . . .
Right Front Passenger Position 1-18 . . . . . . . . . . . . . . . . . . . .
Roadside Assistance 8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roadside Assistance, Canadian 8-6 . . . . . . . . . . . . . . . . . . . . .
Rocking Your Vehicle 5-34 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotation, Tires 6-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .