1993 Buick Lesabre Brake Service (ONLINE REPAIR MANUALS)

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We have info for following modifications of 1993 Buick Lesabre

  • 1993 Buick Lesabre Custom 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
  • 1993 Buick Lesabre Limited 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L

BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Disc Brakes -> AC-Delco Single Piston Front Disc Brake (Type 2) -> Rotor, Replace -> CAMARO & FIREBIRD -> EXCEPT CAMARO & FIREBIRD
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

EXCEPT CAMARO & FIREBIRD
  • Raise and support vehicle, then remove tire and wheel assembly.
  • Remove caliper assembly from rotor as described in "Caliper Service."
  • Remove caliper assembly mounting bracket attaching bolts, then the mounting bracket.
  • Remove rotor from hub and bearing assembly.
  • Reverse procedure to install.
CAMARO & FIREBIRD
  • Remove caliper as described in "Caliper Removal" under "Caliper Service."
  • Remove caliper mounting bracket attaching bolts, then the caliper mounting bracket.
  • Remove wheel bearing lubricant cap...

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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Anti-lock Brakes -> Bonneville, Eighty Eight, LeSabre, Ninety Eight, Park Avenue, 1992 DeVille & Fleetwood (FWD) (Teves Type) -> Diagnosis & Testing -> 1992-93 MODELS, EXCEPT 1993 LESABRE & PARK AVENUE -> 1993-94 LESABRE & PARK AVENUE -> 1994 BONNEVILLE, 88 & 98 -> ABS System Self-Diagnosis Description -> Anti-Lock Warning Lamp -> Code Interpretation & Functional Check -> Description -> Diagnostic Tests -> History & Current ABS Codes -> Note On Intermittents -> Symptom Diagnosis -> Wiring Diagrams
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS

Description

Anti-Lock Warning Lamp

The amber Anti-lock warning lamp is located in the instrument panel cluster. This lamp will illuminate when the EBCM detects a malfunction in the anti-lock brake system. The warning lamp is intended only to warn the driver that a condition has been detected which results in partial or total reduction of the anti-lock brake system. Under this condition full operation of the standard hydraulic braking system is available. If both the red Brake and the amber Anti-Lock brake lights are illuminated, there may be something wrong with the hydraulic ...

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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Hydraulic Brake Systems -> Troubleshooting -> CHECKING FOR FLUID LEAKAGE -> ROAD TESTING
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS

When troubleshooting the hydraulic brake system, perform the following checks and inspections as outlined below. If problem still exists within system, refer to Fig. first, then to Figs. and as necessary.

CHECKING FOR FLUID LEAKAGE

Start engine and depress the brake pedal. If the pedal gradually falls under constant pressure, the hydraulic system may be leaking. Raise the vehicle on a lift and check all tubing lines and backing plates for signs of leakage. It may be necessary to lift or re...

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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Power Brake Units -> Adjustments -> AC-Delco Type -> AIR METHOD -> BRAKE PEDAL -> GAUGE METHOD -> PUSHROD -> Single Diaphragm Type -> Toyota/GM Single Diaphragm Type
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

BRAKE PEDAL
Toyota/GM Single Diaphragm Type
  • With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
  • If distance is not 5.79-6.18 inches, adjust pedal height as follows:
    • Remove left lower instrument panel trim section and air duct.
    • Loosen stop lamp switch sufficiently to gain clearance for pedal adjustment.
    • Loosen locknut and rotate pedal pushrod as needed to obtain specified pedal height, then tighten locknut.
    • Adjust position of brake light switch so that plunger lightly contacts pedal stopper and brake lamps are off when pedal is release...

CLICK HERE TO GET FULL ACCESS TO 1993 Buick Lesabre BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Disc Brakes -> AC-Delco Single Piston Front Disc Brake (Type 2) -> Troubleshooting -> BRAKE ROUGHNESS
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

BRAKE ROUGHNESS

The most common cause of brake chatter on disc brakes is a variation in thickness of the disc. If roughness or vibration is encountered during highway operation or if pedal pulsation is experienced at low speeds, the disc may have excessive thickness variation. To check for this condition, measure the disc at 12 points with a micrometer at a radius approximately one inch from edge of disc. If thic...

CLICK HERE TO GET FULL ACCESS TO 1993 Buick Lesabre BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.

Drum Brakes -> Type 8 -> DESCRIPTION
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

This brake assembly is of an advanced design. It operates with fewer parts, but is equal to other drum brake systems in performance. In thi...

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