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2004 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 2004 Chevrolet Impala AUTOMOBILES
Manual Air Conditioning & Heater System Diagnosis & Testing -> Impala & Monte Carlo -> Air Conditioning System Troubleshooting
Vehicle: 2004 Chevrolet Impala LS 3.8 V6 GAS
If an air conditioning system fault is suspected, inspect the following conditions:
- Outer surfaces of radiator and condenser cores to ensure air flow is not blocked by dirt, leaves or other foreign material.
- Restrictions or kinks in condenser core, hoses or tubes.
- Blower motor operation.
- Refrig...
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BRAKE SERVICE PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
Power Brake Units -> Adjustments -> AC-Delco Tandem Diaphragm Type -> Air Method -> Brake Pedal -> Gauge Method -> Pushrod -> Toyota/GM Single Diaphragm Type
Vehicle: 2004 Chevrolet Impala 3.8 V6 GAS
Brake Pedal
Toyota/GM Single Diaphragm Type
- With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
- Distance should be 5.850-6.244 inches.
- If distance is not as specified, adjust pedal height as follows:
- Remove lefthand lower instrument panel trim section and air duct.
- Loosen stop lamp switch sufficiently to access pedal adjustment.
- Loosen locknut and rotate pedal pushrod as required to obtain specified pedal height. Tighten locknut.
- Adjust brake lamp switch position so plunger lightly contacts pedal stopper and brake lamps are off when pe...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Pressure Relief -> Except Aveo, LaCrosse, LeMans (1988-93), Malibu & Malibu Maxx (2004-05), Metro, Nova, Prizm, Spectrum & Storm -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
Vehicle: 2004 Chevrolet Impala LS 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 vehicle relearns its adaptive strateg...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2004 Chevrolet Impala SS 3.8 V6 GAS
- Raise and support vehicle on a hoist.
- Remove tire and wheel assembly.
- Disconnect tie rod from knuckle.
- Insert a drift into rotor and against caliper in order to prevent rotor from turning.
- Remove wheel drive shaft nut.
- Remove stabilizer link.
- Be sure that wheel speed sensor wiring harness is repositioned away from ball joint after disconnecting electrical connector from sensor. Disconnect ele...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Diagnostic Tests -> Intermittent & Poor Connections -> Intermittents -> Poor Connections
Vehicle: 2004 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 2004 Chevrolet Impala AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Chevrolet Impala LS 3.8 V6 GAS
- Disconnect battery ground cable.
- Remove serpentine drive belt, using a suitable tool.
- Dis...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
Cabin Air Filter Service -> General Motors Corp./Saturn -> 1997-2005 Century, Regal, 1998-2002 Intrigue & 2000-05 Impala & Monte Carlo
Vehicle: 2004 Chevrolet Impala LS 3.8 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 2004 Chevrolet Impala AUTOMOBILES
General Motors Corp./Saturn Cars -> Check Engine Or Service Now Soon Engine Indicator Lamps (Gasoline Engines w/Electronic Engine Controls Or EFI) -> Except LeMans, Metro, Prizm, Storm & Vibe
Vehicle: 2004 Chevrolet Impala 3.4 V6 GAS
The Check Engine 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 fault condition and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM memory can be cleared of codes as follows:
On models except Cadillac with DEFI, remove the ECM/PCM fuse or disconnect the battery ground cable for approximately 30...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
Radiator, Replace
Vehicle: 2004 Chevrolet Impala 3.8 V6 GAS
- Drain engine coolant into suitable container.
- Remove upper radiator seal.
- Remove upper radiator support bar.
- Disconnect and plug coolant overflow hose from radiator.
- Disconnect upper and lower radiator hoses from radiator and position out of way.
- Remove bolt from transmission oil cooler pipe clip at lower radiator tie bar.
- Remove cooling fans.
- Disconnect transmission fluid cooler lines from radiator using coupling tool No. J41623-B, or equivalent. Position lines aside.
- Disconnect ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Chevrolet Impala AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Chevrolet Impala 3.4 V6 GAS
- Rotate tensioner clockwise using a b...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Chevrolet Impala AUTOMOBILES
Component location diagrams for most 2004 Chevrolet Impala cars and light trucks sold in the U.S. from 1990+.
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![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2004 Chevrolet Impala AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Chevrolet Impala cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Chevrolet Impala AUTOMOBILES
OEM TSB listings for most 2004 Chevrolet Impala cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2004 Chevrolet Impala 3.8 V6 GAS Auto Systems: |
Document: New Website for AFIT, TPM, and VDR Updates Vehicle: 2004 Chevrolet Impala 3.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Chevrolet Impala AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 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 2004 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 2004 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 2004 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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