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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Chevrolet S10 Pickup car and truck repair procedures including Chevrolet engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your 1990 Chevrolet S10 Pickup automobile. Try the Automotix DIY solution today!
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We have info for following modifications of 1990 Chevrolet S10 Pickup

  • 1990 Chevrolet S10 Pickup 2.5 L4 GAS, CC:2474, CID:151, Fuel Injection, Aspiration:151, Engine VIN:, Desg:E
  • 1990 Chevrolet S10 Pickup 2.8 V6 GAS, CID:173, Fuel Injection, Aspiration:173, Engine VIN:, Desg:R
  • 1990 Chevrolet S10 Pickup 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:Z

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> COMPONENT REPLACEMENT -> EHCU MODULE -> FRONT WHEEL SPEED SENSOR -> REAR WHEEL SPEED SENSOR
Vehicle: 1990 Chevrolet S10 Pickup 2.8 V6 GAS

EHCU MODULE

The EHCU module is not serviceable and must be replaced as a unit. Refer to Fig. when replacing the unit.

  • Bleed brake booster by depressing brake pedal several times.
  • Remove washer tank attaching bolts, then position aside.
  • Remove EHCU electrical connectors.
  • Disconnect module brake lines. Use caution not to get brake fluid on paint or electrical connections.
  • Remove upper to lower bracket assembly attaching bolts.
  • Remove EHCU module and upper bracket assembly from vehicle.
  • Remove upper mounting bracket to EHCU module attaching bolts.
  • Reverse procedure to install, noting...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> COMPONENT REPLACEMENT -> EHCU MODULE -> FRONT WHEEL SPEED SENSOR -> REAR WHEEL SPEED SENSOR
Vehicle: 1990 Chevrolet S10 Pickup 4.3 V6 GAS

EHCU MODULE

The EHCU module is not serviceable and must be replaced as a unit. Refer to Fig. when replacing the unit.

  • Bleed brake booster by depressing brake pedal several times.
  • Remove washer tank attaching bolts, then position aside.
  • Remove EHCU electrical connectors.
  • Disconnect module brake lines. Use caution not to get brake fluid on paint or electrical connections.
  • Remove upper to lower bracket assembly attaching bolts.
  • Remove EHCU module and upper bracket assembly from vehicle.
  • Remove upper mounting bracket to EHCU module attaching bolts.
  • Reverse procedure to install, noting...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

POWER BRAKE UNITS, GENERAL MOTORS -> Bendix Brake Boosters -> HYDRO-BOOST -> ACCUMULATOR SERVICE -> ASSEMBLE -> BLEEDING BOOSTER -> CLEANING & INSPECTION -> DESCRIPTION -> DISASSEMBLE
Vehicle: 1990 Chevrolet S10 Pickup 4.3 V6 GAS

DESCRIPTION

The Hydro-Boost system, Fig. , provides an additional cylinder in the brake system. This cylinder contains no brake fluid. The Hydro-Boost cylinder is hydraulically operated, by pressurized fluid from the power steering pump, providing power assist to operate a dual master cylinder brake system.

The booster is composed of two sections; the linkage section and the power section.

The booster is designed so that if a total absence of power assist occurs, the brakes can be applied manually, but somewhat greater pressure on the brake pedal is required.

DISASSEMBLE

  • Place accumulato...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
Vehicle: 1990 Chevrolet S10 Pickup 2.5 L4 GAS

  • Raise and support vehicle.
  • Remove wheel, drum and brake shoes.
  • Disconnect hydraulic line at wheel cylinder. Do not pull metal line away from cylinder, as this may kink or bend line. Line will separate from cylinder when cylinder is moved away from brake backing plate.
  • Remove wheel cylinder-to-brake plate attaching screws, then the wheel cylinder.
  • Remove boots, pistons, springs and cups from cylinder, Fig. .
  • Clean all parts with brake fluid.
  • Inspect cylinder bore. A scored bore may be honed as long as the diameter is not increased by ...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> DESCRIPTION
Vehicle: 1990 Chevrolet S10 Pickup 4.3 V6 GAS

This braking system Fig. is designed to reduce the occurrence of wheel lock-up during severe braking conditions. To accomplish this function, the system regulates hydraulic brake line pressure by using an Electronic Hydraulic Control Unit (EHCU) module. This control module has two types of valves. Isolation valves which maintain pressure to each front wheel separately and rear wheels combined. Dump valves which dump pressure to each front wheel separately and rear wheels combined. These valves are controlled by a microcomputer which is part of the EHCU module. During a severe brak...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet S10 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet S10 Pickup cars and light trucks from 1990+.

POWER BRAKE UNITS, GENERAL MOTORS -> Tracker Brake Booster -> IN-VEHICLE SERVICE -> BOOSTER PISTON ROD ADJUSTMENT
Vehicle: 1990 Chevrolet S10 Pickup 4.3 V6 GAS

BOOSTER PISTON ROD ADJUSTMENT

  • Pump brake pedal several times, then remove master cylinder from brake booster.
  • With gasket installed on master cylinder, install booster piston rod gauge tool No. J34873-A or equivalent on master...

CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet S10 Pickup BRAKE SERVICE PROCEDURES

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