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2003 Chevrolet Impala 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!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Cooling System Capacities -> General Motors Corp./Saturn Passenger Cars -> 2003-04
Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Power Brake Units -> Power Brake Unit Service
Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS
Hydro-boost brake boosters are...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Filter Replacement -> Except Aveo, Chevette 1.8L Diesel, Corvette, GTO, LaCrosse, Malibu (2004-06) & Malibu Maxx, Vibe, XLR, 2004-05 Corvette & 1998-2002 Metro & Prizm
Vehicle: 2003 Chevrolet Impala 3.8 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 v...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Chevrolet Impala 3.4 V6 GAS
- Raise and suitably support vehicle.
- Remove wheel and tire.
- Remove stabilizer shaft link.
- Remove front wheel drive shaft nut. Insert a drift or a flat-bladed tool into caliper and rotor to prevent rotor from turning.
- Disconnect outer tie rod assembly from steering knuckle.
- Separate ball joint from steering knuckle. Do not attempt to move vehicle with drive axle(s) removed from wheel bearing. Wheel(s) could fall off, dropping vehicle to ground and causing personal injury or damage to vehicle.
- Separate front wheel drive axle from front wheel drive shaft bearing using a suitable pu...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Diagnostic Tests -> Intermittent & Poor Connections -> Intermittents -> Poor Connections
Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS
Accessing Diagnostic Trouble Codes
Connect a suitably programmed scan tool to DLC (Data Link Connector) and follow manufacturer's instructions.
Diagnostic Tests
Refer to Figs. through for diagnostic test procedures.
Intermittent & Poor Connections
Intermittents
Most intermittents are caused by faulty electrical connections or wiring. Inspect for the following:
- Wiring broken inside insulation.
- Poor connection between male and female terminal at connector.
- Poor terminal to wire connection. Some conditions which fall under this are:
- Poor crimps.
- Poor solder joints.
- Crimping over wire ins...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS
- Disconnect battery ground cable.
- Remove serpentine drive belt tension by rotating drive belt tensioner counterclockwise using a suitable breaker bar.
- Remove s...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Cabin Air Filter Service -> General Motors Corp./Saturn -> 1997-2005 Century, Regal, 1998-2002 Intrigue & 2000-05 Impala & Monte Carlo
Vehicle: 2003 Chevrolet Impala 3.4 V6 GAS
Under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.
- Place the windshield wipers in the up position by turning the ignition switch Off when the wipers reach the desired position.
- Open the hood.
- Lift the righthand side of the rear hood seal from the flange in the area of the rig...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
General Motors Corp./Saturn Cars -> Active Handling System Warning Lamp ->
Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned on as a bulb check. The lamp will also come on as the system is...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 Chevrolet Impala LS 3.8 V6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition inlet heater hose clamp from heater core pipe.
- Remove hose from heater core.
- Reposition heater hose clamp from heater hose inlet pipe.
- Remove inlet heater hose from heater hose inlet pipe.
- Remove hose from vehicle.
- Reverse procedure to ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Chevrolet Impala AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Chevrolet Impala 3.4 V6 GAS
- Rotate tensioner clockwise using a b...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Chevrolet Impala AUTOMOBILES
Component location diagrams for most 2003 Chevrolet Impala cars and light trucks sold in the U.S. from 1990+.
Front of Engine Diagram for 2003 Chevrolet Impala LS 3.8 V6 GAS Components on diagram: |
Front of Right Rear Door Trim,Left Rear Similar Diagram for 2003 Chevrolet Impala 3.4 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Chevrolet Impala AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Chevrolet Impala cars and light trucks sold in the U.S.
2003 Chevrolet Impala 3.8 V6 GAS Wiring Diagram Components on diagram: |
2003 Chevrolet Impala LS 3.8 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Chevrolet Impala AUTOMOBILES
OEM TSB listings for most 2003 Chevrolet Impala cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS Auto Systems: |
Document: New Website for AFIT, TPM, and VDR Updates Vehicle: 2003 Chevrolet Impala 3.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Chevrolet Impala AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Chevrolet Impala 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 Impala 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 Impala 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 Impala 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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