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2003 Chevrolet Astro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Technical Service Bulletins
- Specifications
- 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

A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Domestic Vehicles
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
Disc Brakes -> Delco Single Piston Sliding Caliper -> Brake Pad Service -> Installation -> Removal
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
Removal
- Remove caliper as outlined in. "Caliper Service."
- Remove inboard pad with retainer spring.
- Remove outboard pad and position caliper on front suspension so brake hose will not support weight of caliper.
- Remove two sleeves from inboard ears of caliper.
- Remove four rubber bushings from grooves in each of caliper ears.
Installation
- Lubricate new sleeves, rubber bushings, bushing grooves and mounting bolt ends with lubricant part No. 19010909, or equivalent.
- Install new bushings and sleeves in caliper ea...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Pressure Relief -> Except Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Tracker & Uplander -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.
Engines Less Fuel Pressure ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
Observe and accurately reference mark the positions of all driveline components relative to the propeller shaft prior to disassembly. These components include the propeller shafts, drive axles, pinion flange, inner axle shafts, etc. Reassemble all components in the exact relationship the components had to one another prior to disassembly. Follow the specifications, torque values and any measurement made prior to disassembly in order to maintain the factory system balance of the driveline components. System balance provides a smoother running driveline operation.
- Unlock ste...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
- Disconnect battery ground cable.
- Remove air inlet duct.
- Remove heater hose brace bolt from rear of alternator.
- Disconnect alternator electrical connectors.
- Remove accessory drive belt.
- Remove alternator mou...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
General Motors Corp./Saturn Trucks -> All Wheel Drive (AWD) System Warning Lamp ->
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
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 2003 Chevrolet Astro AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS
Lower
- Drain cooling system into a suitable container.
- Remove air cleaner assembly.
- Reposition hose clamp from water pump housing.
- Remove radiator outlet hose from water pump housing.
- Reposition hose clamp from radiator.
- Remove radiator outlet hose from radiator and from vehicle.
- Reverse procedu...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Chevrolet Astro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 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 2003 Chevrolet Astro AUTOMOBILES
Component location diagrams for most 2003 Chevrolet Astro cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Chevrolet Astro AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Chevrolet Astro cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Chevrolet Astro AUTOMOBILES
OEM TSB listings for most 2003 Chevrolet Astro cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS Auto Systems: |
Document: New Website for AFIT, TPM, and VDR Updates Vehicle: 2003 Chevrolet Astro 4.3 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Chevrolet Astro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 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 2003 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 2003 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 2003 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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