Auto Parts Search


      Over 40 million used auto parts online. Shop online for auto and truck parts and save up to 75%

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!
Help me findSearch
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!
DIY REPAIR SAMPLES > CONTINUE EXPLORING >

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 Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GASLower Front Of Engine Diagram for 2003 Buick Regal LS 3.8 V6 GAS

Components on diagram:
  • Starter
  • Knock Sensor (KS)
  • Engine Oil Pressure (EOP) Switch
  • Ground G-100
  • Positive Battery Cable
  • Left Side Of Transmission Diagram for 2003 Buick Regal GS 3.8 V6 GASLeft Side Of Transmission Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Park/Neutral Position Switch
  • Connector C-113
  • Connector C-200
  • Engine Wiring Harness
  • Connector C-1
  • Center Console Diagram for 2003 Buick Regal GS 3.8 V6 GASCenter Console Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Cigar Lighter
  • Traction Control Switch
  • Auxiliary Power Outlet
  • Heated Seat Switch
  • Connector C-240
  • Below Left Side Of IP Diagram for 2003 Buick Regal GS 3.8 V6 GASBelow Left Side Of IP Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Turn Signal/Hazard Flasher Module
  • Backup Lamp Relay
  • Body Control Module (BCM)
  • I/P Courtesy Lamp
  • Connector C-1
  • Left Side Of Rear Window Diagram for 2003 Buick Regal GS 3.8 V6 GASLeft Side Of Rear Window Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • RF Filter
  • Body Wiring Harness
  • Connector C-1
  • Connector C-3
  • Rear Window Defogger Grid Connector
  • Power Seat Subsystems Diagram for 2003 Buick Regal LS 3.8 V6 GASPower Seat Subsystems Diagram for 2003 Buick Regal LS 3.8 V6 GAS

    Components on diagram:
  • Seat Belt Switch
  • Seat Adjuster Switch
  • Connector C-311
  • Connector C-312
  • Seat Adjuster Motor Assembly
  • Rear Compartment Lid Diagram for 2003 Buick Regal GS 3.8 V6 GASRear Compartment Lid Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Rear Compartment Lid Lock Release Actuator
  • Rear Compartment Key Cylinder
  • Rear Compartment Lid Lock Ajar Switch
  • Rear Compartment Lid Lock Ajar Switch Connector
  • Rear Compartment Lid Lock Release Actuator Connector
  • Air Bag Modules And Side Impact Sensor Diagram for 2003 Buick Regal GS 3.8 V6 GASAir Bag Modules And Side Impact Sensor Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Steering Wheel
  • Inflatable Restraint Steering Wheel Module
  • Inflatable Restraint I/P Module
  • Inflatable Restraint Side Impact Sensor
  • Inflatable Restraint Side Impact Module
  • Steering Wheel Diagram for 2003 Buick Regal GS 3.8 V6 GASSteering Wheel Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Steering Wheel
  • Inflatable Restraint Steering Wheel Module Coil
  • Right Side Of Passenger Compartment Near Rocker Inner Panel Diagram for 2003 Buick Regal GS 3.8 V6 GASRight Side Of Passenger Compartment Near Rocker Inner Panel Diagram for 2003 Buick Regal GS 3.8 V6 GAS

    Components on diagram:
  • Inflatable Restraint Sensing And Diagnostic Module
  • Instrument Panel Wiring Harness
  • Body Wiring Harness
  • Connector C-1
  • Connector C-2
  • 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 1996 Buick Regal Grille Assembly1996 Buick Regal Grille Assembly, Without emblem provision; A high quality, OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $50.52

    Click here to view more details about 1996 Buick Regal Headlight, Passenger Side1996 Buick Regal Headlight, Passenger Side, Bulbs included; Composite type; DOT and SAE approved; A high quality, OE replacement headlight assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $62.87

    Click here to view more details1999 Buick Regal Radiator, Radiator; 3.8LTR V6; With Supercharger, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $79.45

    Click here to view more details2003 Buick Regal LS V6, 3.8 L, 231 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,842.00

    Click here to view more details2012 Buick Regal Used Harmonic Balancer, Very Good.

    Source: Used Auto Parts Store

    $77.00

    Click here to view more details1984 Buick Regal Used Wiper Motor Front, Without PULSE WIPER; 2 WIRE ARMATURE, Very Good.

    Source: Used Auto Parts Store

    $86.00
    More parts
    Help me findSearch
    Auto Repair Quick Search
    Help me find
    Search DIY repair manuals by VIN...
    Vehicle Identification Number is a unique serial number used by the automotive industry to identify individual motor vehicles

    Find out what info we have for your vehicle

    Get the Complete Technical Service Bulletins!
    Get the Complete Technical Service Bulletins!Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 2003 Buick Regal vehicle.
    Access the Complete guide!
    Need To Fix Your Car or Truck?
    Save Money With Free Car Insurance Quote
    FREE car insurance quote
    Enter Zip Code:
    GOT A WEBSITE?Make money with Automotix

    Make money with Automotix Partner Program.

    Learn more

    Auto Repair Quick Search
    Help me find