1999 Buick LeSabre service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- Custom Sedan 4-Door
- Limited Sedan 4-Door
Engines covered
- 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL T
THE BACKFIRE CAN RUPTURE THE INTAKE MANIFOLD. THE RUPTURE OF THE INTAKE MANIFOLD CAN DISPLACE A FUE
DEALERS WILL INSTALL NEW FUEL PRESSURE REGULATORS WITH IMPROVED DIAPHRAGMS. THE RECALL WILL BE CONDU
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and
Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form o
Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form o
Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's
Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO CALIBR
Showing the 8 most recent of 39 technical service bulletins on file with NHTSA.
SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 200
SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 200
SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 200
SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 200
SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 200
Showing the 5 most serious of 268 complaints filed with NHTSA.
