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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Buick Reatta car and truck
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BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Eldorado, Reatta, Riviera, Seville, Toronado & Trofeo (Teves Type) -> EBCM INPUTS -> BRAKE LIGHT SWITCH -> CRANK SENSE -> DIAGNOSTIC ENABLE -> IGNITION ENABLE -> LOW FLUID & LOW PRESSURE -> WHEEL SPEED SENSORS
Vehicle: 1990 Buick Reatta 3.8 V6 GAS
IGNITION ENABLE
The ignition enable input receives battery voltage whenever the ignition switch is in the RUN position. Upon receiving an ignition enable input, the EBCM begins its self-checks.
CRANK SENSE
A crank sense input is provide to the EBCM which goes high (12 volts), when the ignition switch is moved to the START position. When the crank sense input is high, the EBCM commands itself, internally, to shut off until engine start is completed.
BRAKE LIGHT SWITCH
The EBCM also receives a 12 volt signal from the brake light switch whenever the brake pedal is depressed. The brake light...
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BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston w/Dual Mounting Bolts (Type 4) -> REAR BRAKE ASSEMBLY -> BRAKE SHOE & LINING INSTALLATION -> BRAKE SHOE & LINING REMOVAL -> Bushing & Boot Replacement -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER INSTALLATION -> CALIPER REMOVAL -> Installation -> MOUNTING BRACKET SERVICE -> Removal
Vehicle: 1990 Buick Reatta 3.8 V6 GAS
CALIPER REMOVAL
- Drain approximately2/3 of brake fluid from master cylinder assembly.
- Raise and support vehicle, then remove tire and wheel assembly.
- Loosen tension on parking brake cable at equalizer.
- Remove retaining clip from parking brake lever, if equipped, disconnect cable, then remove spring and damper, Fig. .
- Hold parking brake lever, remove locknut.
- Remove lever, lever seal, and anti-friction washer.
- Bottom piston into caliper bore to provide clearance between linings and rotor.
- Reinstall anti-friction washer, lever seal (sealing bead against housing), lever, and locknut.
- If ...
CLICK HERE TO GET FULL ACCESS TO 1990 Buick Reatta BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> TROUBLESHOOTING -> CHECKING FOR FLUID LEAKAGE -> ROAD TESTING
Vehicle: 1990 Buick Reatta 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 toFig. first, then toFig. as necessary.
ROAD TESTING
When testing brakes, ensure the road is level and dry. Test brakes at both light and heavy pedal pressure. Do not lock up brakes or slide tires during a brake test.
Check the tires on the vehicle before performing a brake test. Tires should be equally inflated, identical in size ...
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BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Eldorado, Reatta, Riviera, Seville, Toronado & Trofeo (Teves Type) -> WARNING SYSTEM OPERATION -> ANTI-LOCK WARNING LAMP -> BRAKE WARNING LAMP -> DRIVER INFORMATION CENTER (DIC) MESSAGES
Vehicle: 1990 Buick Reatta 3.8 V6 GAS
The anti-lock brake system uses three methods of notifying the driver of a system malfunction. These include a red "BRAKE" warning lamp and an amber "ANTI-LOCK" warning lamp, both in the instrument panel cluster. Also included are three messages which may be displayed on the driver information center (DIC).
BRAKE WARNING LAMP
The brake warning lamp in the instrument panel cluster will illuminate to warn the driver of conditions in the brake system which may result in reduced braking ability as well as to notify the driver that the parking brake is applied or not completely re...
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BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1990 Buick Reatta 3.8 V6 GAS
When a premature rear wheel slide is obtained on a brake application, it usually is an indication that the fluid pressure to the rear wheels is above the 50% reduction ratio for the rear line pressure and that malfunction has occurred within the proportioning valve.
To test the valve, install gauge set shown in Fig. in brake line between master cylinder and proportioning valve, and at outpu...
CLICK HERE TO GET FULL ACCESS TO 1990 Buick Reatta BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Buick Reatta AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Buick Reatta cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> BLEEDING DISC BRAKES
Vehicle: 1990 Buick Reatta 3.8 V6 GAS
Pressure bleeding is recommended for all hydraulic disc brake systems.
The disc brake hydraulic system can be bled manually or with pressure bleeding equipment. On vehicles with disc brakes the brake pedal will require more pumping and frequent checking of fluid level in master cylinder during bleeding ope...
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