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+.

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

When working on or around brake assemblies, care must be taken to prevent breathing asbestos dust, as many manufacturers incorporate asbestos fibers in the production of brake linings. During routine service operations the amount of asbestos dust from brake lining wear is at a low level due to a chemical breakdown during use, and a few precautions will minimize exposure.

  • Do not sand or grind brake linings unless suitable local exhaust ventilation equipment is used to prevent excessive asbestos exposure.
  • Wear a suitable respirator approved for asbestos dust use during all repair proced...

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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+.

Disc Brakes -> AC-Delco Single Piston Front Disc Brake (Type 2) -> Caliper Service -> CALIPER ASSEMBLE -> CALIPER DISASSEMBLE -> CALIPER INSTALLATION -> CALIPER REMOVAL
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

CALIPER REMOVAL
  • Remove approximately 2/3 of brake fluid from master cylinder.
  • Raise and support front of vehicle, then remove wheel and tire assembly.
  • Position suitable pliers over inboard pad and housing as shown in Fig. , and squeeze pliers to compress caliper piston.
  • If caliper assembly is being removed for service, remove inlet fitting attaching bolt, copper washer, and inlet fitting from caliper housing. Plug opening in inlet fitting to prevent fluid loss and contamination. Do not crimp brake hose, as this may damage internal structure of hose. If only shoe and lining assemblie...

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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 -> Hydraulic Brake System Specifications
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS

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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+.

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) -> System Service -> 1993-94 LESABRE & PARK AVENUE -> BRAKE BLEED PROCEDURE -> Component Replacement -> Component Service -> ELECTRONIC BRAKE CONTROL MODULE (EBCM) -> EXCEPT 1993 LESABRE & PARK AVENUE -> FILLING & PRESSURE BLEED -> Front -> PRESSURE MODULATOR VALVE (PMV) -> PROPORTIONER VALVE -> Rear -> WHEEL SPEED SENSOR RINGS -> WHEEL SPEED SENSORS
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS

Component Service

BRAKE BLEED PROCEDURE

Refer to Fig. for procedure.

FILLING & PRESSURE BLEED

Refer to Fig. for procedure.

Component Replacement

1993-94 LESABRE & PARK AVENUE

Refer to Figs. through for replacement and adjustment procedures.

EXCEPT 1993 LESABRE & PARK AVENUE
ELECTRONIC BRAKE CONTROL MODULE (EBCM)

Ignition switch must be in the Off position prior to disconnecting or connecting the EBCM.

  • Remove right and left sound insulators.
  • Disconnect floor outlet, then remove bolt retaining EBCM, Fig. .
  • Slide EBCM toward accelerator pedal just far enough to expose connector.
  • Disconnect EB...

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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 -> Component Service -> Assemble -> CORVETTE -> Disassemble -> EXCEPT CORVETTE -> MASTER CYLINDER OVERHAUL -> WHEEL CYLINDER OVERHAUL
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS

MASTER CYLINDER OVERHAUL
EXCEPT CORVETTE
Disassemble

Refer to Figs. and when performing the following procedures.

  • Remove master cylinder from vehicle as follows:
    • Disconnect and plug hydraulic lines.
    • Remove two master cylinder attaching nuts, then the master cylinder.
  • Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
  • Inspect cover and diaphragm. Replace if cut, cracked or deformed.
  • Remove fluid level switch, if equipped.
  • On models with compact master cylinder, remove proportioner valve assembly, Fig. .
  • Depress primary piston and remove lock ring.
  • Plug primary fl...

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