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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Buick Regal car and truck repair procedures including Buick engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your 2003 Buick Regal automobile. Try the Automotix DIY solution today!
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We have info for following modifications of 2003 Buick Regal

  • 2003 Buick Regal GS 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:1
  • 2003 Buick Regal LS 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:K

COMPONENT LOCATION DIAGRAMS FOR 2003 Buick Regal AUTOMOBILES

Component location diagrams for most 2003 Buick Regal cars and light trucks sold in the U.S. from 1990+.

Behind Right Side Of Instrument Panel Diagram for 2003 Buick Regal LS 3.8 V6 GASBehind Right Side Of Instrument Panel Diagram for 2003 Buick Regal LS 3.8 V6 GAS

Components on diagram:
  • Vacuum/Electric Solenoid
  • Blower Motor Resistor Assembly
  • Blower Motor
  • I/P Fuse Block
  • Connector C-200
  • Lower Front Of Engine Diagram for 2003 Buick Regal GS 3.8 V6 GASLower Front Of Engine Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Starter
  • Knock Sensor (KS)
  • Engine Oil Pressure (EOP) Switch
  • Ground G-100
  • Positive Battery Cable
  • Engine, Near Starter Diagram for 2003 Buick Regal LS 3.8 V6 GASEngine, Near Starter Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Knock Sensor
  • Engine Oil Pressure Sensor
  • Fusible Link
  • Connector C-171
  • Ground G-113
  • Starter Diagram for 2003 Buick Regal GS 3.8 V6 GASStarter Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Starter Assembly
  • Engine Oil Level Switch
  • Knock Sensor (KS) 1
  • Positive Battery Cable
  • Ground G-113
  • Right Front Side Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GASRight Front Side Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Crankshaft Position (CKP) Sensor
  • Ignition Control Module (ICM)
  • Connector C-110
  • Ignition Control Module (ICM) Wiring Harness
  • Top Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GASTop Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Fuel Injector 1
  • Fuel Injector 3
  • Manifold Absolute Pressure (MAP) Sensor
  • Evaporative Emissions (EVAP) Canister Purge Solenoid Valve
  • Connector C-110
  • Vehicle Fuel Tank Diagram for 2003 Buick Regal LS 3.8 V6 GASVehicle Fuel Tank Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Connector C-405
  • Left Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GASLeft Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Throttle Position (TP) Sensor
  • Mass Air Flow (MAF) Sensor
  • Idle Air Control (IAC) Valve
  • Inside Air Temperature (IAT) Sensor
  • Center Of Floor Console Diagram for 2003 Buick Regal GS 3.8 V6 GASCenter Of Floor Console Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Performance Shift Switch
  • Connector C-325
  • Automatic Transmission Control Position Indicator Bulb
  • Automatic Transmission Control Switch (BTSI)
  • Seat Belt Component Views Diagram for 2003 Buick Regal LS 3.8 V6 GASSeat Belt Component Views Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Seat Belt Switch
  • Seat Belt Switch Connector
  • CLICK HERE TO GET FULL ACCESS TO 2003 Buick Regal PARTS/COMPONENTS LOCATION DIAGRAMS!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details about 2004 Buick Regal Grille Assembly2004 Buick Regal Grille Assembly, With emblem provision and billet grille insert; A high quality, direct fit OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $52.80

    Click here to view more details about 1996 Buick Regal Bumper Bracket, Front, Driver Side1996 Buick Regal Bumper Bracket, Front, Driver Side, A high quality, direct fit OE replacement bumper bracket..

    Source: Auto Body Parts Store

    $8.80

    Click here to view more details1979 Buick Regal Radiator, Radiator; Aluminum; 3-Row; 28-1/4 X 17 X 1- 7/8, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $543.50

    Click here to view more details2004 Buick Regal V6, 3.8 L, 230 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,842.00

    Click here to view more details2000 Buick Regal Used Alternator, 3.8, AUTO, FWD 3.8L, Very Good.

    Source: Used Auto Parts Store

    $99.00

    Click here to view more details1980 Buick Regal Used Wiper Motor Front, RWD, Very Good.

    Source: Used Auto Parts Store

    $70.00
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