1990 Chevrolet G20 VAN REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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1990 Chevrolet G20 VAN CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 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!
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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 1990 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 1990 Chevrolet G20 VAN AUTOMOBILES

A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-95 Chevrolet & GMC C & K, G, P & R & V Series
Vehicle: 1990 Chevrolet G20 VAN Sportvan 4.3 V6 GAS

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BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> MASTER CYLINDER SERVICE -> Assemble -> BENDIX TYPE -> CAST IRON TYPE -> COMPOSITE TYPE -> DELCO MORAINE TYPE -> Disassemble -> Inspection -> TRACKER MODELS
Vehicle: 1990 Chevrolet G20 VAN Sportvan 5.0 V8 GAS

DELCO MORAINE TYPE

COMPOSITE TYPE

Refer to Figs. and when performing the following procedures.

Disassemble
  • Remove master cylinder from vehicle.
  • Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
  • Inspect cover and diaphragm. Replace if cut, cracked or deformed.
  • Remove fluid level switch and proportioner valve assembly, if equipped.
  • Depress primary piston and remove lock ring.
  • Plug primary fluid outlet (outlet nearest to cowl when master cylinder is installed), then apply compressed air into secondary fluid outlet to remove primary and secondary pistons.
  • R...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1988-06 C/K, G & R/V Series w/Diesel Engines -> Normal Service -> Severe Service
Vehicle: 1990 Chevrolet G20 VAN Sportvan 6.2 V8 DIESEL

Normal Service

Repl...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 1990 Chevrolet G20 VAN Sportvan 4.3 V6 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 ...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

Starter, Replace
Vehicle: 1990 Chevrolet G20 VAN Sportvan 5.0 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 ...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

General Motors Corp./Saturn Trucks -> Check Engine/Service Engine Soon Indicator Lamp -> Electronic Engine Controls Or Electronic Fuel Injection Except Tracker
Vehicle: 1990 Chevrolet G20 VAN 5.7 V8 GAS

The Check Engine/Service Engine Soon Lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detected a problem and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM/PCM memory can be cleared of codes either by using a scan tool (OBD II systems) or by disconnecting the battery ground ca...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

Radiator, Replace
Vehicle: 1990 Chevrolet G20 VAN Sportvan 6.2 V8 DIESEL

  • Drain cooling system into a suitable container.
  • Remove upper fan shroud.
  • Remove radiator hose inlet.
  • Remove radiator hose outlet.
  • Remove transmission oil cooler lines.
  • Remove overflow hose.
  • Remove ...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Chevrolet G20 VAN AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1990 Chevrolet G20 VAN Sportvan 4.3 V6 GAS

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

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COMPONENT LOCATION DIAGRAMS FOR 1990 Chevrolet G20 VAN AUTOMOBILES

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

EGR Valve   Diagram for 1990 Chevrolet G20 VAN  5.7 V8 GASEGR Valve Diagram for 1990 Chevrolet G20 VAN 5.7 V8 GAS

Components on diagram:
  • EGR Valve
  • Vacuum Release Valve Diagram for 1990 Chevrolet G20 VAN Sportvan 5.0 V8 GASVacuum Release Valve Diagram for 1990 Chevrolet G20 VAN Sportvan 5.0 V8 GAS

    Components on diagram:
  • Vacuum Release Valve
  • CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet G20 VAN PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1990 Chevrolet G20 VAN AUTOMOBILES

    OEM drawn wiring diagrams for most 1990 Chevrolet G20 VAN cars and light trucks sold in the U.S.

    1990 Chevrolet G20 VAN  5.7 V8 GAS Wiring Diagram1990 Chevrolet G20 VAN 5.7 V8 GAS Wiring Diagram

    Components on diagram:
  • Blower Motor Resistor
  • Blower Motor
  • A/C Compressor
  • Hi Blower Relay
  • Evaporator Pressure Control Switch
  • 1990 Chevrolet G20 VAN Sportvan 5.7 V8 GAS Wiring Diagram1990 Chevrolet G20 VAN Sportvan 5.7 V8 GAS Wiring Diagram

    Components on diagram:
  • Trailer Tow
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    TECHNICAL SERVICE BULLETINS FOR 1990 Chevrolet G20 VAN AUTOMOBILES

    OEM TSB listings for most 1990 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: 1990 Chevrolet G20 VAN 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED
    Vehicle: 1990 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 1990 Chevrolet G20 VAN TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1990 Chevrolet G20 VAN AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 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 1990 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 1990 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 1990 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 1990 Chevrolet G20 VAN SPECIFICATIONS DATA!

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