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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!
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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 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

Components on diagram:
  • Body Control Module
  • Headlamp Relay
  • Ambient Light Sensor
  • 2003 Chevrolet Trailblazer  4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Headlamp Switch
  • Headlamp Leveling Switch
  • Headlamp Leveling Actuator -Left
  • Headlamp Leveling Actuator -Right
  • 2003 Chevrolet Trailblazer  4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Seat Recline Motor -Passenger
  • Seat Horizontal Motor -Passenger
  • Seat Rear Vertical Motor -Passenger
  • Memory Seat Module -Passenger
  • Seat Front Vertical Motor -Passenger
  • 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram

    Components on diagram:
  • Seat Lumbar Horizontal Motor -Driver
  • Seat Lumbar Vertical Motor -Driver
  • Passenger Seat
  • Lumbar Adjuster Switch -Driver
  • 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Seat Lumbar Position Sensor -Passenger
  • Seat Lumbar Vertical Motor -Passenger
  • Seat Lumbar Horizontal Motor -Passenger
  • Memory Seat Module -Passenger
  • Lumbar Adjuster Switch -Passenger
  • 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 5.3 V8 GAS Wiring Diagram

    Components on diagram:
  • Driver Door Module
  • Front Passenger Door Module
  • Heated Seat Element - Front Passenger Back
  • Heated Seat Thermistor -Driver
  • Heated Seat Thermistor -Front Passenger
  • 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 EXT 4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Blower Motor Control Module
  • Blower Motor
  • Coolant Bypass Valve
  • Heater/Vent/Air Conditioning Control Module
  • 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  4.2 L6 GAS Wiring Diagram2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Stop Lamp Switch
  • Electronic Brake Control Module
  • Powertrain Control Module
  • Antilock Brake System Indicator
  • Antilock Brake System Pump
  • 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 2002 Chevrolet Trailblazer Fender, Front, Passenger Side2002 Chevrolet Trailblazer Fender, Front, Passenger Side.

    Source: Auto Body Parts Store

    $119.03

    Click here to view more details2009 Chevrolet Trailblazer Spark Plug Wire.

    Source: Auto Body Parts Store

    $46.64

    Click here to view more details about 2006 Chevrolet Trailblazer 16" x 7" Alloy Wheel2006 Chevrolet Trailblazer 16" x 7" Alloy Wheel, Alloy Wheel; 16 X 7; 50MM Offset; 5 Spokes; 6 Lug; 5 Inch BP; Machined And Medium Gray, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $117.50

    Click here to view more details1993 Ford F-250 Pickup V8, 5.8 L, 351 CID Rebuilt Engine, Windsor, HO, dipstick in block, Non Roller cam., Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,446.00

    Click here to view more details2008 Chevrolet Trailblazer Used Upper Control Arm, Passenger Side, 4.2, AUTO, 4X2 R., Very Good.

    Source: Used Auto Parts Store

    $70.00

    Click here to view more details2002 Chevrolet Trailblazer Used A/C Compressor, 4.2, AUTO, RWD 4.2L, Very Good.

    Source: Used Auto Parts Store

    $152.00
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