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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 -> Delco-Moraine Single Piston Caliper -> DESCRIPTION
Vehicle: 1991 GMC K1500 Pickup Sierra 5.7 V8 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 -> Delco-Moraine Brake Boosters -> TROUBLESHOOTING -> BRAKES GRAB -> HARD PEDAL -> SLOW OR NO RELEASE
Vehicle: 1991 GMC K1500 Pickup Sierra 4.3 V6 GAS

HARD PEDAL

  • Internal vacuum leak.
  • Faulty control valve.
  • Broken or damaged hydraulic brake lines.
  • Collapsed or damaged vacuum hose.
  • Plugged or loose vacuum fitting.
  • Bad stud welds on front or rear housing on power head.
  • Faulty booster diaphragm.
  • Restricted air filter element.
  • Worn or distorted reaction plate or levers.
  • Cracked or broken pow...

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+.

HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
Vehicle: 1991 GMC K1500 Pickup Sierra XC 4.3 V6 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 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 -> TROUBLESHOOTING -> BRAKES GRAB -> HARD PEDAL -> SLOW OR NO RELEASE
Vehicle: 1991 GMC K1500 Pickup Sierra XC 4.3 V6 GAS

HARD PEDAL

  • Internal vacuum leak.
  • Faulty control valve.
  • Broken or damaged hydraulic brake lines.
  • Collapsed or damaged vacuum hose.
  • Plugged or loose vacuum fitting.
  • Bad stud welds on front or rear housing on power head.
  • Faulty booster diaphragm.
  • Restricted air filter element.
  • Worn or distorted reaction plate or levers.
  • Cracked or broken pow...

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+.

ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> DESCRIPTION
Vehicle: 1991 GMC K1500 Pickup Sierra XC 5.0 V8 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 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+.

DRUM BRAKES, GENERAL MOTORS -> Drum Brake Service -> Inspection
Vehicle: 1991 GMC K1500 Pickup Sierra XC 4.3 V6 GAS

  • Inspect components for damage or unusual wear. Replace as necessary.
  • Inspect backing plate attaching bolts, and ensure they are tight.
  • Inspect wheel cylinders. Excessive fluid indicates cup leakage and need for wheel cylinder replacement. A slight amount of fluid is always present and is considered normal, act...

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

Shop online for auto body parts, engines, wheels, lights...

Click here to view more details about 2002 GMC Yukon Door Handle, Front, Driver Side2002 GMC Yukon Door Handle, Front, Driver Side, With door lock button; A high quality, OE replacement door handle; Backed by 1-year, unlimited-mileage warranty..

Source: Auto Body Parts Store

$25.72

Click here to view more details about 1999 GMC Yukon Fender Flares, Front, Driver Side1999 GMC Yukon Fender Flares, Front, Driver Side, A high quality, OE replacement fender trim; Backed by 1-year, unlimited-mileage warranty..

Source: Auto Body Parts Store

$8.54

Click here to view more details about 2008 GMC Van Savana 16" x 6.5" Steel Wheel2008 GMC Van Savana 16" x 6.5" Steel Wheel, Steel Wheel; 16 X 6.5; 5 Spokes; 6 Lug; 5.5 Inch BP; Ident TZA; Black, , .

Source: Wheels / Rims, Mirrors & Lights Store

$69.50

Click here to view more details about 1995 GMC K1500 Pickup Sierra XC V8, 5 L, 305 CID Rebuilt Engine1995 GMC K1500 Pickup Sierra XC V8, 5 L, 305 CID Rebuilt Engine, Carb, flat lifters, valve cover bolts through center of head., Warranty: 3-Year/100,000 Mile, .

Source: Rebuilt Engines Store

$1,281.00

Click here to view more details1993 GMC K1500 Pickup Used A/C Compressor, 6.5, 4X2 R12 refrigerant, Very Good.

Source: Used Auto Parts Store

$110.00

Click here to view more details1990 GMC K1500 Pickup Used Parking Lamp, Passenger Side, PARKLAMP-TURN SIGNAL; (BELOW HEADLAMPS), SEALED BEAM HEADLAMPS, R., Very Good.

Source: Used Auto Parts Store

$45.00
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