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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+.

Lower Left Side Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GASLower Left Side Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GAS

Components on diagram:
  • A/C Compressor Clutch
  • Crankshaft Position (CKP) Sensor A
  • Knock Sensor (KS) 1
  • Engine Oil Pressure (EOP) Switch
  • Positive Battery Cable
  • Wheel Speed Sensor Diagram for 2003 Buick Regal GS 3.8 V6 GASWheel Speed Sensor Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Wheel Speed Sensor
  • Starter Diagram for 2003 Buick Regal LS 3.8 V6 GASStarter Diagram for 2003 Buick Regal LS 3.8 V6 GAS

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

    Components on diagram:
  • Supercharger Boost Control Solenoid
  • Connector C-126
  • Left Side Of Transmission Diagram for 2003 Buick Regal LS 3.8 V6 GASLeft Side Of Transmission Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Park/Neutral Position Switch
  • Connector C-113
  • Connector C-200
  • Engine Wiring Harness
  • Connector C-1
  • VSS And Engine Oil Pressure Switch Diagram for 2003 Buick Regal GS 3.8 V6 GASVSS And Engine Oil Pressure Switch Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Vehicle Speed Sensor (VSS)
  • Power Steering Pump
  • Engine Oil Pressure (EOP) Switch
  • Rack And Pinion Assembly
  • 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:
  • Power Drop Connector
  • Connector C-206
  • Windshield Washer Components, Inside Right Front Fender Liner Diagram for 2003 Buick Regal GS 3.8 V6 GASWindshield Washer Components, Inside Right Front Fender Liner Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Instrument Panel Wiring Harness
  • Windshield Washer Pump Connector
  • Windshield Washer Fluid Level Switch Connector
  • Lower Leading Edge Of Front Door Diagram for 2003 Buick Regal LS 3.8 V6 GASLower Leading Edge Of Front Door Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Front Radio Speaker
  • Radio Speaker Connector, Midrange
  • Radio Speaker Connector, Tweeter
  • Power Roof Systems Component Views Diagram for 2003 Buick Regal GS 3.8 V6 GASPower Roof Systems Component Views Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Sunroof Switch
  • Express Open Connector
  • Sunroof Motor Connector
  • Sunroof Switch Connector
  • Sunroof Limit 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 1999 Buick Regal Tail Light, Passenger Side1999 Buick Regal Tail Light, Passenger Side, Bulbs not included; DOT and SAE approved; A high quality, direct fit OE replacement tail light..

    Source: Auto Body Parts Store

    $164.77

    Click here to view more details1999 Buick Regal Fuel Tank, 33.25 in. L x 27.75 in. W; A high quality, direct fit OE replacement fuel tank; Features all-zinc external layer, combined zinc and iron mid-section, and pure steel core; Its multi-layered construction is designed to withstand corrosion-inducing circumstances such as saltwater or moisture; With 2 years limited Trustbuilt warranty..

    Source: Auto Body Parts Store

    $194.22

    Click here to view more details1994 Buick Regal Set Of 4 Aftermarket Wheel Covers, SET OF 4 AFTERMARKET WHEEL COVERS, 15" DIAMETER, ABS WIRE, CHROME FINISH, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $32.45

    Click here to view more details1984 Buick Regal V6, 4.1 L, 252 CID Rebuilt Engine, With or without smog, oil pump kit only., Warranty: 7-Year/70,000 Mile, .

    Source: Rebuilt Engines Store

    $1,365.00

    Click here to view more details2011 Buick Regal Used TV-Info-GPS Screen, Driver Side, (INFO), OPT UAG, Very Good.

    Source: Used Auto Parts Store

    $88.00

    Click here to view more details1995 Buick Regal Used Bumper Bar, Front, 4DR, Gray, CUSTOM, Very Good.

    Source: Used Auto Parts Store

    $149.00
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