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1990 Chevrolet R2500 Suburban CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> COMPONENT DESCRIPTION -> HYDRAULIC CONTROL VALVES -> MASTER CYLINDER
Vehicle: 1990 Chevrolet R2500 Suburban 7.4 V8 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 R2500 Suburban AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Replacement -> Gasoline Engines Except Equinox, Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Uplander & Vue (2004-06) & 2004-06 Envoy, Rainier & TrailBlazer -> Returnless Fuel System
Vehicle: 1990 Chevrolet R2500 Suburban 5.7 V8 GAS
Returnless Fuel System
On models equipped with fuel injected engines, relieve fuel system pressure as outlined under "Fuel System Pressure Relief."
On models equipped with metal collar quick disconnect connectors, GM tool No. J37088-A, or equivalent, will be required to disconnect the connector. Pri...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Chevrolet R2500 Suburban 7.4 V8 GAS
- Raise and support vehicle.
- Remove wheel and tire assembly.
- Remove drive axle center cap, if equipped.
- Insert a drift or large screwdriver through brake caliper into one of the brake rotor vanes in order to prevent drive axle wheel drive shaft from turning.
- Remove nut and washer from hub. Do not reuse nut. A new nut must be used when installing wheel drive shaft.
- Using axle remover tool No. J 45859 or equivalent, press wheel drive shaft from hub.
- Remove bolts securing wheel dr...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
Starter, Replace
Vehicle: 1990 Chevrolet R2500 Suburban 6.2 V8 DIESEL
- Disconnect battery ground cable.
- Remove starter braces or heat shields, if equipped.
- Disconnect starter solenoid electrical connectors.
- Raise and support vehicle.
- Remove at...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
General Motors Corp./Saturn Trucks -> All Wheel Drive (AWD) System Warning Lamp ->
Vehicle: 1990 Chevrolet R2500 Suburban 6.2 V8 DIESEL
This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the war...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 Chevrolet R2500 Suburban 5.7 V8 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...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Chevrolet R2500 Suburban 5.7 V8 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 R2500 Suburban AUTOMOBILES
Component location diagrams for most 1990 Chevrolet R2500 Suburban cars and light trucks sold in the U.S. from 1990+.
Vehicle Speed Sensor Diagram for 1990 Chevrolet R2500 Suburban 5.7 V8 GAS Components on diagram: |
Engine Block Heater Locations Diagram for 1990 Chevrolet R2500 Suburban 6.2 V8 DIESEL Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Chevrolet R2500 Suburban cars and light trucks sold in the U.S.
1990 Chevrolet R2500 Suburban 5.7 V8 GAS Wiring Diagram Components on diagram: |
1990 Chevrolet R2500 Suburban 5.7 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
OEM TSB listings for most 1990 Chevrolet R2500 Suburban 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 R2500 Suburban 6.2 V8 DIESEL Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1990 Chevrolet R2500 Suburban 6.2 V8 DIESEL Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Chevrolet R2500 Suburban AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Chevrolet R2500 Suburban 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 R2500 Suburban 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 R2500 Suburban 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 R2500 Suburban 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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