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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Hummer H2 car and truck repair procedures including Hummer 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 Hummer H2 automobile. Try the Automotix DIY solution today!
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WIRING DIAGRAMS FOR 2003 Hummer H2 AUTOMOBILES

OEM drawn wiring diagrams for most 2003 Hummer H2 cars and light trucks sold in the U.S.

2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

Components on diagram:
  • Data Link Connector
  • Traction Control Switch
  • Brake Indicator
  • ABS Indicator
  • Electronic Brake Control Module
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Stop Lamp Switch
  • Park/Neutral Position Switch
  • Park Lock Solenoid
  • A/t Shift Lock Control Solenoid
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Body Control Module
  • Driver Door Module
  • Front Passenger Door Module
  • Rear Door Unlock Relay
  • Rear Door Lock Relay
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Park/Turn Signal Lamp-LF
  • Park/Turn Signal Lamp-RF
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Off-Road Lamps Relay 1
  • Off Road Lamps Switch
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Transfer Case Shift Control Module
  • Traction Control Switch
  • Body Control Module
  • Electronic Brake Control Module
  • Air Suspension Module
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Sunroof Module
  • Sunroof Relay
  • Body Control Module
  • Sunroof Switch
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Windshield Washer Fluid Level Switch
  • Battery
  • Headlamp-Right
  • Horn-High
  • Off Road Lamp-Grille Guard
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Garage Door Opener
  • 2003 Hummer H2  6.0 V8 GAS Wiring Diagram2003 Hummer H2 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Data Link Connector
  • Driver Door Module
  • Front Passenger Door Module
  • CLICK HERE TO GET FULL ACCESS TO 2003 Hummer H2 WIRING DIAGRAMS!

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    Click here to view more details about 2008 Hummer H2 Headlight2008 Hummer H2 Headlight, 7 in. round; With crystal lenses; Diamond-cut and skull design; FMVSS-108, DOT and SAE approved; High quality replacement headlights..

    Source: Auto Body Parts Store

    $179.09

    Click here to view more details about 2007 Hummer H2 Cigarette Lighter2007 Hummer H2 Cigarette Lighter, With wire terminal; A high quality cigarette lighter; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $6.39

    Click here to view more details2007 Hummer H2 Pro EFX Stainless Steel Side Step Bars, Pro EFX Stainless Steel Side Step Bars, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $335.50

    Click here to view more details2005 Hummer H2 V8, 6.0 L, 368 CID Rebuilt Engine, 6.0 V-8 Aluminum Heads, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $2,099.00

    Click here to view more details2003 Hummer H2 Used Timing Cover, 5.3L, Very Good.

    Source: Used Auto Parts Store

    $72.00

    Click here to view more details2003 Hummer H2 Used Exhaust Manifold, L., Very Good.

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    $72.00
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