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1991 Chevrolet G20 VAN CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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    Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Chevrolet G20 VAN 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 Chevrolet G20 VAN automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Chevrolet mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1991 Chevrolet G20 VAN vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

    A/C & HEATER SERVICE PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-95 Chevrolet & GMC C & K, G, P & R & V Series
    Vehicle: 1991 Chevrolet G20 VAN Sportvan 5.7 V8 GAS

    [[table data]]

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    POWER BRAKE UNITS, GENERAL MOTORS -> Bendix Brake Boosters -> TROUBLESHOOTING -> ACCUMULATOR LEAK-DOWN, SYSTEM DOES NOT HOLD CHARGE -> GRABBY BRAKES OR BOOSTER CHATTERS/PEDAL VIBRATES -> SLOW BRAKE PEDAL RETURN
    Vehicle: 1991 Chevrolet G20 VAN 5.7 V8 GAS

    SLOW BRAKE PEDAL RETURN

    • Excessive seal friction in booster.
    • Faulty spool action.
    • Restriction in return line from booster to pump reservoir.
    • Damaged input rod end.

    GRABBY BRAKES OR BOOSTER CHATTERS/PEDAL VIBRATES

    • Faulty spool action caused by contamination in ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1988-95 C/K, G & R/V Series w/Gasoline Engine -> Heavy Duty Emissions -> Light Duty Emissions -> Normal Service -> Severe Service
    Vehicle: 1991 Chevrolet G20 VAN 5.0 V8 GAS

    Light Duty Emissions

    Normal Service

    Replace every 60,000 miles

    Severe Service

    Rep...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
    Vehicle: 1991 Chevrolet G20 VAN Sportvan 5.0 V8 GAS

    Never clamp propeller shaft tubing in a vise. Clamping could dent or deform the tube causing an imbalance or unsafe condition. Always clamp on one of the yokes and support the shaft horizontally. Avoid damaging the slip yoke sealing surface. Nicks may damage the bushing or cut the lip seal.

    Disassemble

    • Support propeller shaft in a line horizontal with table of a press.
    • Mark propeller shaft in order to show which end connects to transmission and which end goes to rear axle.
    • On models equipped with external snap ring retainers, proceed as follows:
      • Disassemble snap rings by ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    Starter, Replace
    Vehicle: 1991 Chevrolet G20 VAN Sportvan 5.7 V8 GAS

    • Disconnect battery ground cable.
    • Raise and support vehicle.
    • Remove starter to engine brace and heat shields, if equipped.
    • Remove starter motor mounting bolts and lower ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    General Motors Corp./Saturn Trucks -> Reduce Engine Power Indicator Lamp ->
    Vehicle: 1991 Chevrolet G20 VAN 5.0 V8 GAS

    The Reduce Engine Power indicator lamp should light for a approximately 3 seconds when the ignition is turned On as a bulb check. If the warning lamp turns On during vehicle operation, a vehicl...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 1991 Chevrolet G20 VAN 4.3 V6 GAS

    Lower

    • Drain cooling system into a suitable container.
    • Reposition hose clamp at radiator outlet and remove hose.
    • Reposition hose clamp at water pump inlet and remove hose.
    • Remove hose from vehicle.
    • Reverse procedure...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 1991 Chevrolet G20 VAN 5.0 V8 GAS

    • Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    Component location diagrams for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. from 1990+.

    Engine Components Diagram for 1991 Chevrolet G20 VAN  5.7 V8 GASEngine Components Diagram for 1991 Chevrolet G20 VAN 5.7 V8 GAS

    Components on diagram:
  • Throttle Position Sensor
  • MAP Sensor
  • Knock Sensor
  • Fuel Pump Relay
  • Coolant Temperature Sensor
  • Heater & A/C Control Diagram for 1991 Chevrolet G20 VAN Sportvan 5.0 V8 GASHeater & A/C Control Diagram for 1991 Chevrolet G20 VAN Sportvan 5.0 V8 GAS

    Components on diagram:
  • Blower Motor
  • Blower Resistor
  • CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S.

    1991 Chevrolet G20 VAN  6.2 V8 DIESEL Wiring Diagram1991 Chevrolet G20 VAN 6.2 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Water In Fuel Sensor
  • Glow Plug Controller
  • Fuel Heater
  • Housing Pressure Cold Advance Solenoid
  • Fast Idle Solenoid
  • 1991 Chevrolet G20 VAN Sportvan 4.3 V6 GAS Wiring Diagram1991 Chevrolet G20 VAN Sportvan 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Ignition Switch
  • CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    OEM TSB listings for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. from 1985+.

    Document: Car and Truck Fix It Right the First Time Issues
    Vehicle: 1991 Chevrolet G20 VAN 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED
    Vehicle: 1991 Chevrolet G20 VAN 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Chevrolet G20 VAN AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Chevrolet G20 VAN cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet G20 VAN SPECIFICATIONS DATA!

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    Source: Auto Body Parts Store

    $5.62

    Click here to view more details1972 Chevrolet G20 Van Radiator Cap, 15 to 18 lbs., 18 psi maximum pressure, standard radiator style, plain cap logo, round shape; Does not include gauge; A high quality, direct fit OE replacement radiator cap..

    Source: Auto Body Parts Store

    $8.99

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    Source: Wheels / Rims, Mirrors & Lights Store

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