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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 GMC K1500 Pickup car and truck repair procedures including GMC 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 1991 GMC K1500 Pickup automobile. Try the Automotix DIY solution today!
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We have info for following modifications of 1991 GMC K1500 Pickup

  • 1991 GMC K1500 Pickup Sierra 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:Z
  • 1991 GMC K1500 Pickup Sierra 5.0 V8 GAS, CID:305, Fuel Injection, Aspiration:305, Engine VIN:, Desg:H
  • 1991 GMC K1500 Pickup Sierra 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
  • 1991 GMC K1500 Pickup Sierra 6.2 V8 DIESEL, CID:379, Fuel Injection, Aspiration:379, Engine VIN:, Desg:C
  • 1991 GMC K1500 Pickup Sierra XC 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:Z
  • 1991 GMC K1500 Pickup Sierra XC 5.0 V8 GAS, CID:305, Fuel Injection, Aspiration:305, Engine VIN:, Desg:H
  • 1991 GMC K1500 Pickup Sierra XC 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
  • 1991 GMC K1500 Pickup Sierra XC 6.2 V8 DIESEL, CID:379, Fuel Injection, Aspiration:379, Engine VIN:, Desg:C

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

DISC BRAKES, GENERAL MOTORS -> Bendix Single Piston Sliding Caliper -> CALIPER SERVICE -> ASSEMBLE -> DISASSEMBLE -> INSTALLATION -> REMOVAL
Vehicle: 1991 GMC K1500 Pickup Sierra 4.3 V6 GAS

REMOVAL

  • Siphon two-thirds of brake fluid from master cylinder reservoir serving front disc brakes.
  • Raise vehicle, support on jack stands and remove front wheels.
  • Bottom the caliper piston in bore. Insert a screwdriver between inboard shoe and piston, then pry piston back into bore. The piston can also be bottomed in the bore with a large C-clamp, Fig. .
  • Remove support key retaining screw.
  • Drive caliper support key and spring from steering knuckle with a suitable drift and hammer, Fig. .
  • Lift caliper from anchor plate and off rotor, Fig. . Hang caliper from coil spring with wire. Do n...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

POWER BRAKE UNITS, GENERAL MOTORS -> Bendix Brake Boosters -> HYDRO-BOOST II -> BLEEDING BOOSTER -> CLEANING & INSPECTION -> DESCRIPTION -> DISASSEMBLE & ASSEMBLE
Vehicle: 1991 GMC K1500 Pickup Sierra 4.3 V6 GAS

DESCRIPTION

Hydro-Boost II is an hydraulically operated power brake booster. The hydraulic brake booster consists of an open center spool valve and an hydraulic cylinder combined into a single housing. The power steering pump provides the hydraulic fluid pressure to operate both the power brake booster and the power steering gear.

A dual master cylinder is bolted to the brake booster and is operated by a pushrod projecting from the booster cylinder bore.

The Hydro-Boost II also has an accumulator system which stores sufficient fluid under pressure to provide one power assisted brake...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

DISC BRAKES, GENERAL MOTORS -> Bendix Single Piston Sliding Caliper -> CALIPER SERVICE -> ASSEMBLE -> DISASSEMBLE -> INSTALLATION -> REMOVAL
Vehicle: 1991 GMC K1500 Pickup Sierra 6.2 V8 DIESEL

REMOVAL

  • Siphon two-thirds of brake fluid from master cylinder reservoir serving front disc brakes.
  • Raise vehicle, support on jack stands and remove front wheels.
  • Bottom the caliper piston in bore. Insert a screwdriver between inboard shoe and piston, then pry piston back into bore. The piston can also be bottomed in the bore with a large C-clamp, Fig. .
  • Remove support key retaining screw.
  • Drive caliper support key and spring from steering knuckle with a suitable drift and hammer, Fig. .
  • Lift caliper from anchor plate and off rotor, Fig. . Hang caliper from coil spring with wire. Do n...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Caliper -> DESCRIPTION
Vehicle: 1991 GMC K1500 Pickup Sierra 4.3 V6 GAS

The caliper assembly, Fig. , slides on its mounting surfaces. Upon brake application, hydraulic pressure against the piston forces the inboard pad against the inboar...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

POWER BRAKE UNITS, GENERAL MOTORS -> General Service -> DESCRIPTION
Vehicle: 1991 GMC K1500 Pickup Sierra XC 5.7 V8 GAS

In order to properly service power brake systems, a thorough understanding of the various power assist systems is necessary. These systems provide a mechanical assist, acting to increase the force applied to the master cylinder piston by the driver while decreasing the effort necessary to obtain acceptable stopping performance. Two basic types of power assist mechanisms are used: vacuum assist diaphragm assemblies which use engine vacuum and in some cases vacuum from an external vacuum pump, and hydraulic assist assemblies which use hydraulic pressure developed by an external pump (...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1991 GMC K1500 Pickup AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 GMC K1500 Pickup cars and light trucks from 1990+.

POWER BRAKE UNITS, GENERAL MOTORS -> Delco-Moraine Brake Boosters -> POWER BRAKE UNIT, Replace -> 1990-91 C & K SERIES -> ASTRO & SAFARI VAN -> CABALLERO & EL CAMINO -> FULL SIZE EXCEPT 1990-91 C & K SERIES -> LUMINA APV, SILHOUTTE & TRANS SPORT -> S/T 10 & 15 & BRAVADA
Vehicle: 1991 GMC K1500 Pickup Sierra XC 4.3 V6 GAS

CABALLERO & EL CAMINO

  • Remove vacuum hose from check valve and master cylinder retaining nuts.
  • Pull master cylinder forward so it clears mounting studs and move to one side. Support cylinder to avoid stress on hydraulic lines.
  • Remove power unit to dash nuts.
  • Remove brake pedal pushrod retainer and disconnect pushrod from pin.
  • Remove power brake unit from vehicle.
  • Reverse procedure to install.

ASTRO & SAFARI VAN

  • Disconnect master cylinder from power brake unit.
  • Disconnect power brake unit pushrod from brake pedal.
  • Remove power brake unit retaining nuts and the power brake unit.
  • Rev...

CLICK HERE TO GET FULL ACCESS TO 1991 GMC K1500 Pickup BRAKE SERVICE PROCEDURES

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Click here to view more details about 1999 GMC K2500 Suburban Window Regulator, Front, Driver Side1999 GMC K2500 Suburban Window Regulator, Front, Driver Side, Manufactured from 100 percent new components for reliable and long lasting performance; Features OE-comparable structural configuration, connectors, and drive gears that are designed for improved and longer service life..

Source: Auto Body Parts Store

$52.46

Click here to view more details about 2004 GMC Sierra 1500 Cab Light2004 GMC Sierra 1500 Cab Light.

Source: Auto Body Parts Store

$112.85

Click here to view more details about 2003 GMC Sonoma Pickup Taillight Bezel2003 GMC Sonoma Pickup Taillight Bezel, Standard Tail Light Bezel; 2 Piece Set 94-03 Sonoma, , .

Source: Wheels / Rims, Mirrors & Lights Store

$37.45

Click here to view more details1998 GMC K1500 Pickup Sierra XC V8, 5 L, 305 CID Rebuilt Engine, SFI, roller lifters, plastic timing cover, Warranty: 3-Year/100,000 Mile, .

Source: Rebuilt Engines Store

$1,640.00

Click here to view more details1996 GMC K1500 Pickup Used Air Flow Meter/Sensor, Very Good.

Source: Used Auto Parts Store

$77.00

Click here to view more details1996 GMC K1500 Pickup Used Air Flow Meter/Sensor, 5.7, AUTO, RWD, Very Good.

Source: Used Auto Parts Store

$92.00
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