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

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

2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

Components on diagram:
  • Data Link Connector
  • Dash Integration Module
  • Automatic Transmission Shift Lock Actuator
  • Ignition Lock Cylinder Control Actuator
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Low Beam Relay
  • Main Relay
  • Starter Relay
  • Fog Lamp Relay
  • Daytime Running Lamp Module
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Data Link Connector
  • Right Headlamp
  • Engine Control Module
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Left Turn Indicator
  • Dash Integration Module
  • Turn/ Hazard Flasher Module
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Data Link Connector
  • Park Lamp Relay
  • Hazard Switch
  • Electronic PRNDL
  • Inflatable Restraint Steering Wheel Module Coil
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Data Link Connector
  • Driver Information Center
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Engine Control Module
  • Clutch Pedal Position Sensor
  • Steering Wheel Control Switch- Center
  • Torque Converter Clutch/ Cruise Control Release Switch
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Driver Door Module
  • Front Passenger Door Module
  • Window Motor- Driver
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Memory Seat Module
  • Seat Recline Position Sensor- Driver
  • Seat Recline Motor- Driver
  • Seat Horizontal Position Sensor- Driver
  • Seat Rear Vertical Motor- Driver
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Inflatable Restraint Sensing And Diagnostic Module
  • Inflatable Restraint Front End Sensor
  • CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac CTS WIRING DIAGRAMS!

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

    Click here to view more details2005 Cadillac CTS Mirror, Driver Side.

    Source: Auto Body Parts Store

    $170.24

    Click here to view more details about 2005 Cadillac CTS Headlight, Driver Side2005 Cadillac CTS Headlight, Driver Side, Bulbs included; Without washer and leveling system; Composite and halogen type; DOT and SAE approved; A high quality, OE replacement headlight assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $135.03

    Click here to view more details2013 Cadillac CTS Reflector Rear, Driver Or Passenger Side Rear Bumper Reflector; For Sedan And Many GM Applications, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $10.50

    Click here to view more details2007 Cadillac CTS V6, 2.8 L, 171 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

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    Click here to view more details2008 Cadillac CTS Used Radio / CD Player / GPS, 25849794, Very Good.

    Source: Used Auto Parts Store

    $167.00

    Click here to view more details2009 Cadillac CTS Used Bumper Bar, Rear, 4DR, Black, 3.6L V6 w/foam, Very Good.

    Source: Used Auto Parts Store

    $477.00
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