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 Chevrolet Trailblazer car and truck repair procedures including Chevrolet 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 Chevrolet Trailblazer automobile. Try the Automotix DIY solution today!
DIY REPAIR SAMPLES > CONTINUE EXPLORING >

We have info for following modifications of 2003 Chevrolet Trailblazer

  • 2003 Chevrolet Trailblazer 4.2 L6 GAS, CID:256, Fuel Injection, Aspiration:256, Engine VIN:, Desg:S
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS, CID:256, Fuel Injection, Aspiration:256, Engine VIN:, Desg:S
  • 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:P

WIRING DIAGRAMS FOR 2003 Chevrolet Trailblazer AUTOMOBILES

OEM drawn wiring diagrams for most 2003 Chevrolet Trailblazer cars and light trucks sold in the U.S.

2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram

Components on diagram:
  • Windshield Washer Fluid Level Switch
  • Battery
  • Cooling Fan
  • Air Conditioning Low Pressure Switch
  • Horn Assembly
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Multifunction Indicator Lamp
  • 2003 Chevrolet Trailblazer  4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Sunroof Module
  • Body Control Module
  • Sunroof Switch
  • Sunroof Motor
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Driver Door Module
  • Memory Seat Module -Driver
  • Memory Seat Switch -Driver
  • 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram

    Components on diagram:
  • Cooling Fan
  • Powertrain Control Module
  • Fan Relay
  • Hall Sensor
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Generator
  • Regulator
  • Charge Indicator
  • Powertrain Control Module
  • 2003 Chevrolet Trailblazer  4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Power Indicator
  • Heater/Vent/Air Conditioning Control Module
  • Heater/Vent/Air Conditioning Control Module -Auxiliary
  • Mode Actuator -Auxiliary
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Rear Blower Resistor
  • Heater/Vent/Air Conditioning Module -Auxiliary
  • Mode Actuator -Auxiliary
  • Blower Motor -Auxiliary
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Transfer Case Shift Control Module
  • Transfer Case Encoder Motor
  • Service 4 Wheel Drive/All Wheel Drive
  • CLICK HERE TO GET FULL ACCESS TO 2003 Chevrolet Trailblazer WIRING DIAGRAMS!

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

    Click here to view more details about 2006 Chevrolet Trailblazer Bumper Grille2006 Chevrolet Trailblazer Bumper Grille, Includes detailed instructions and hardware; Made from anodized 5052-grade aluminum for extra strength and durability; Features unique diamond-shaped hole pattern and patented clip-on system that requires no screws or drilling; Provides your vehicle with a new style and look; Designed for precise and perfect fit; No cutting, trimming and drilling required; With Street Scene's limited warranty..

    Source: Auto Body Parts Store

    $91.63

    Click here to view more details about 2005 Chevrolet Trailblazer Mirror, Driver Side2005 Chevrolet Trailblazer Mirror, Driver Side.

    Source: Auto Body Parts Store

    $123.09

    Click here to view more details about 2007 Chevrolet Trailblazer 18" x 8" Alloy Wheel2007 Chevrolet Trailblazer 18" x 8" Alloy Wheel, Alloy Wheel; 18 X 8; 6 Double Spokes; 6 Lug; 5 Inch BP; All Polished, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $177.50

    Click here to view more details1993 Jeep Cherokee L4, 2.5 L, 150 CID Rebuilt Engine, Block #532, 403, Head #403, 117 Crank #904, Crank snout 2.125", Oil bypass in filter, not in block, FI only, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,297.00

    Click here to view more details2004 Chevrolet Trailblazer Used Wheel, 16x7, alum, 5 spoke, opt QC3 (LT), (bright face w/charcoal pockets), Very Good.

    Source: Used Auto Parts Store

    $105.00

    Click here to view more details2002 Chevrolet Trailblazer Used Upper Control Arm, Passenger Side, 4.2, AUTO, 4X4 R., Very Good.

    Source: Used Auto Parts Store

    $78.00
    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 Chevrolet Trailblazer 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:
    Auto Repair Quick Search
    Help me find