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2004 Buick Regal CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Buick REPAIR SHOPS DON'T WANT YOU TO KNOW
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- 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 Buick Regal AUTOMOBILES
Compressor Service -> Harrison Compressors -> Clutch Plate & Hub, Replace -> HD6/HT6/HU6 Compressors -> Installation -> Removal -> V5 & V7 Compressors
Vehicle: 2004 Buick Regal GS 3.8 V6 GAS
Service procedures given are for compressor removed and mounted in suitable holding fixture. However, on most applications, compressor clutch components can be serviced without removing compressor or recovering refrigerant from system. If refrigerant recovery becomes required, refer to for procedure.
To prevent serious internal compressor damage, when removing or installing clutch components, never apply pressure directly to the compressor shaft. Always use a suitable shaft protector.
Removal
V5 & V7 Compressors
- On conventional mount compre...
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BRAKE SERVICE PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
Disc Brakes -> AC-Delco Single Piston Rear Disc Brake -> Troubleshooting
Vehicle: 2004 Buick Regal LS 3.8 V6 GAS
The most common cause of brake chatter on disc brakes is a variation in disc thickness. If roughness or vibration is encountered during highway operation or if pedal pulsation is experienced at low speeds, the disc may have excessive thickness variation. To inspect for this condition, measure the disc at 12 points with a micrometer at a radius appro...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Filter Scheduled Maintenance -> 1980-06 Gasoline Engine Models Except Catera, LeMans (1988-93) Metro, Nova (1985-88), Saturn & Sprint -> Normal Service -> Severe Service
Vehicle: 2004 Buick Regal LS 3.8 V6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2004 Buick Regal LS 3.8 V6 GAS
To prevent personal injury and/or component damage, do not allow the weight of the vehicle to load the front wheels, or attempt to operate the vehicle, when the wheel drive shaft(s) or wheel drive shaft nut(s) are removed. To do so may cause the inner bearing race to separate, resulting in damage to brake and suspension components and loss of vehicle control.
Wheel drive shaft boots, seals and clamps should be protected from sharp objects any time service is performed on or near the wheel drive shaft(s). Damage to the boot(s), the seal(s) or the clamp(s) may cause lubrican...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
Wiring Diagrams -> Wire Color Code Identification
Vehicle: 2004 Buick Regal GS 3.8 V6 GAS
Refer to Fig. for wirin...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
Starter, Replace
Vehicle: 2004 Buick Regal GS 3.8 V6 GAS
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove lower air deflector fog lamp access panels.
- Remove lower air deflector retainers.
- Remove lower air deflector attaching bolts and screws.
- Remove right and left side lower front fender liner screws from lo...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
Cabin Air Filter Service -> General Motors Corp./Saturn -> 1997-2005 Century, Regal, 1998-2002 Intrigue & 2000-05 Impala & Monte Carlo
Vehicle: 2004 Buick Regal 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 Buick Regal 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 Buick Regal GS 3.8 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 Buick Regal AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2004 Buick Regal LS 3.8 V6 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp from water pump housing using hose clamp pliers J 38185 or equivalent.
- Remove radiator outlet hose from water pump housing.
- Remove lower radiator air deflector.
- Reposition hose clamp from radiator using hose clamp pliers J 38185 or equivalent.
- Remove radiator outlet hose from radiator and from vehicle.
- Re...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Buick Regal AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Buick Regal GS 3.8 V6 GAS
- Remove the battery.
- Rotate the tensioner counterclockwise to remove the drive belt.
- Remove the supercharger belt from...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Buick Regal AUTOMOBILES
Component location diagrams for most 2004 Buick Regal cars and light trucks sold in the U.S. from 1990+.
A/C Accumulator And A/C Pressure Sensor Diagram for 2004 Buick Regal LS 3.8 V6 GAS Components on diagram: |
Lower Left Front Of The Passenger Compartment Diagram for 2004 Buick Regal LS 3.8 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2004 Buick Regal AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Buick Regal cars and light trucks sold in the U.S.
2004 Buick Regal GS 3.8 V6 GAS Wiring Diagram Components on diagram: |
2004 Buick Regal LS 3.8 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Buick Regal AUTOMOBILES
OEM TSB listings for most 2004 Buick Regal cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2004 Buick Regal GS 3.8 V6 GAS Auto Systems: |
Document: New Website for AFIT, TPM, and VDR Updates Vehicle: 2004 Buick Regal GS 3.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Buick Regal AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 Buick Regal 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 Buick Regal 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 Buick Regal 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 Buick Regal 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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