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1990 Chevrolet Astro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW
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- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Chevrolet Astro 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 Astro automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Chevrolet Astro & GMC Safari
Vehicle: 1990 Chevrolet Astro 2.5 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> COMPONENT DESCRIPTION -> HYDRAULIC CONTROL VALVES -> MASTER CYLINDER
Vehicle: 1990 Chevrolet Astro 4.3 V6 GAS
MASTER CYLINDER
Some vehicles use a conventional tandem master cylinder with two hydraulic pistons operating in line. The primary piston controls the front brake system and the secondary piston controls the rear brake system.
Other models use a master cylinder that operates the same as the conventional master cylinder, but also incorporates a quick take-up feature in the rear chamber to reduce excessive pedal travel which may result from increased fluid displacement required to move the low drag caliper piston out against the rotor.
The quick take-up uses a spring-loaded ball...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Component Locations -> 1985-05 Astro Van & Safari Van w/4.3L Fuel Injected Engine
Vehicle: 1990 Chevrolet Astro 4.3 V6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 1990 Chevrolet Astro 2.5 L4 GAS
Front
The driveline components in this vehicle are factory system-balanced. System balance provides a smoother running driveline operation. Observe the position of all the driveline components. Accurately mark the relationship of the components before removal. These components include the propeller shafts, the drive axles, the pinion flanges, and the output shafts. All components must be reassembled in the exact relationship to each other as they were before removal. Follow the specifications, the torque values, and any measurements made prior to disassembly in order to maint...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Chevrolet Astro 4.3 V6 GAS
- Disconnect battery ground cable.
- Remove air cleaner.
- Remove drive belt.
- Disconnect regulator electrical connector.
- Remove alternator front mounting bolts.
- Remove alternator rear mounting bolt.
- Remove alternat...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Chevrolet Astro 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 Astro 2.5 L4 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 Astro AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 Chevrolet Astro 4.3 V6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition hose clamp at heater core.
- Remove inlet heater hose from heater core.
- Reposition hose clamp at engine.
- Remove inlet heater hose from engine.
- Remove hose from vehicle.
- Reverse procedure to...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Chevrolet Astro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Chevrolet Astro 4.3 V6 GAS
- Insert a 1/2 inch breaker bar into the tensioner pulley.
- Rotate tensioner counterclockwise, then remove drive belt.
- Route drive belt over all pulleys except ...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Chevrolet Astro AUTOMOBILES
Component location diagrams for most 1990 Chevrolet Astro cars and light trucks sold in the U.S. from 1990+.
 Electronic Control Module Diagram for 1990 Chevrolet Astro 2.5 L4 GASComponents on diagram: |
 Behind LH Side Of I/P Diagram for 1990 Chevrolet Astro 2.5 L4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Chevrolet Astro AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Chevrolet Astro cars and light trucks sold in the U.S.
 1990 Chevrolet Astro 4.3 V6 GAS Wiring DiagramComponents on diagram: |
 1990 Chevrolet Astro 4.3 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Chevrolet Astro AUTOMOBILES
OEM TSB listings for most 1990 Chevrolet Astro cars and light trucks sold in the U.S. from 1985+.
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Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1990 Chevrolet Astro 2.5 L4 GAS Auto Systems: |
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Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1990 Chevrolet Astro 2.5 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Chevrolet Astro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Chevrolet Astro 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 Astro 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 Astro 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 Astro 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
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