1999 BUICK LESABRE power steering

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6-66 L36 Engine Accessory Belt
The L36 engine uses an engine accessory belt. This
diagram shows the features connected and the routing.
See ªMaintenance Scheduleº in the Index for when to
check the belt.
A. Power Steering
B. Generator
C. Air Conditioning
D. Crank
E. Coolant Pump
F. Tensioner

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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.

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7-39
Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
FLUID/LUBRICANT
Engine OilEngine Oil with the American
Petroleum Institute Certified For
Gasoline Engines ªStarburstº
symbol of the proper viscosity. To
determine the preferred viscosity
for your vehicle's engine, see
ªEngine Oilº in the Index.
Engine Coolant50/50 mixture of clean, drinkable
water and use only GM
Goodwrench

DEX-COOL
or
Havoline
DEX-COOL

Coolant. See ªEngine Coolantº in
the Index.
USAGEFLUID/LUBRICANT
Hydraulic Brake
SystemDelco Supreme 11
Brake Fluid
(GM Part No. 12377967 or
equivalent DOT
-3 Brake Fluid).
Windshield
Washer SolventGM Optikleen
Washer Solvent
(GM Part No. 1051515 or
equivalent).
Parking Brake
Cable GuidesChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements of
NLGI # 2, Category LB or
GC
-LB.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. 1052884
- 1 pint,
1050017
- 1 quart, or equivalent).
Automatic
TransaxleDEXRON
-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant,
Superlube
(GM Part
No. 12346241 or equivalent).

First Edition for Buick LeSabre Owner's Manual ± 1999
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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

First Edition for Buick LeSabre Owner's Manual ± 1999
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9-10
Starter Switch Check 7-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam 5-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Emergencies 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnasteer
4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Tilt 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Touch Controls 3-11, 3-32 . . . . . . . . . . . . . . . . . . . .
Storage Compartments 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage, Vehicle 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuck: In Sand, Mud, Ice or Snow 5-33 . . . . . . . . . . . . . . . . . .
Sun Visors 2-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental Restraint System (SRS) 1-18 . . . . . . . . . . . . . . .
Symbols, Vehicle v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillamp Bulb Replacement 6-37 . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Control, Climate Control System 3-2, 3-4 . . . . .
Temperature Control, Passenger 3-9 . . . . . . . . . . . . . . . . . . . .
Theater Dimming 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Alarm System 2-16 . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . .
THEFTLOCK3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Gear, Automatic Transaxle 2-26 . . . . . . . . . . . . . . . . . . .
Tilt Steering Wheel 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time, Setting the 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information Label 4-30 . . . . . . . . . . . . . . . . . . . Tires 6
-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-46 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat 5-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Spare 5-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Check 7-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-42 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Treadwear 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uniform Quality Grading 6-45 . . . . . . . . . . . . . . . . . . . . . . .
Wear Indicators 6-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Replacement 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . .
When It's Time for New 6-43 . . . . . . . . . . . . . . . . . . . . . . .
Top Strap 1-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Lock 2-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque, Wheel Nut 5-29, 6-64 . . . . . . . . . . . . . . . . . . . . . . . . .
Towing
Recreational Vehicle 4
-29 . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Vehicle 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction
Control System 4
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control System Warning Light 2-63, 4-9 . . . . . . . . . . . . . .
Off Warning Light 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .