2003 Cadillac CTS REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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2003 Cadillac CTS CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Cadillac REPAIR SHOPS DON'T WANT YOU TO KNOW

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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 Cadillac CTS automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Cadillac mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 2003 Cadillac CTS vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Vacuum & Wiring Diagrams -> Passenger Cars -> Century & Regal
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

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BRAKE SERVICE PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Power Brake Units -> Description -> AC-Delco Single Diaphragm Type -> AC-Delco Tandem Diaphragm Type -> Toyota/GM Single Diaphragm Type
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

AC-Delco Tandem Diaphragm Type

This unit utilizes a vacuum power chamber, consisting of a front and rear shell, housing divider, front and rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return spring, Fig. .

In normal operating mode, with service brakes in released position, the booster operates with vacuum on both sides of its diaphragms. When brakes are applied, air at atmospheric pressure is admitted to one side of each diaphragm to provide power assist. When the service brake is released, atmospheric air is shut off from one side of each diaphragm. The air is ...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

General Motors Corp./Saturn Passenger Cars -> Fuel Filter Replacement -> Except Aveo, Chevette 1.8L Diesel, Corvette, GTO, LaCrosse, Malibu (2004-06) & Malibu Maxx, Vibe, XLR, 2004-05 Corvette & 1998-2002 Metro & Prizm
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.

Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.

After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the v...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

DRIVESHAFT, Replace
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

  • Raise and support vehicle.
  • Remove exhaust system. Remove only propeller shaft coupler-to-transmission flange bolts. Do NOT remove coupler from propeller shaft.
  • Remove propeller shaft coupler-to-transmission flange bolts and nuts. Remove only propeller shaft coupler-to-differential flange bolts. Do NOT remove coupler from propeller shaft.
  • Remove propeller shaft coupler-to-differential flange bolts and nuts.
  • Support propeller shaft at support bearing.
  • Remove nuts securing support bearing to vehicle underbody.
  • Push front propeller shaft toward rear of vehicle in order to release prop...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Starter, Replace
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

  • Disconnect battery ground cable.
  • Raise and support vehicle using suitable lift.
  • Disconnect HO2S electrical connector at sensor.
  • Remove exhaust pipe to lefthand and righthand catalytic converter attaching nuts.
  • Lower exhaust and allow to rest on floor panel brace.
  • Remove lefthand and righthand converter seal and gasket.
  • Remove converter to hanger and then the converter to exhaust manifold attaching nuts.
  • Remove righthand catalytic converter.
  • Remove starter heat shield bolt and nut, then the starter heat shield.
  • Remove starter soleno...

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Cabin Air Filter Service -> General Motors Corp./Saturn -> 2003-09 CTS
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

On 2003-07 models, under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.

On 2008-09 models, under normal operating conditions the cabin air filter should be replaced every 25,000 miles. In dusty areas change the cabin air filter more often.

  • Open the hood.
  • Remove the rear hood seal from flange on the passenger side air inlet grille panel.
  • Remove the four screws retaining the passenger side air inlet grille panel to the cowl panel.
  • Lift the passenger side air inlet grille panel and pull inward to...

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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

General Motors Corp./Saturn Cars -> Check Fuel Cap Lamp ->
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

The Check Fuel Cap Lamp will illuminate momentarily when the ignition switch is placed in the on position as a bulb check. If...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

Lower

  • Disconnect negative battery cable.
  • Drain cooling system into a suitable container.
  • Reposition hose clamp from engine.
  • Remove radiator outlet hose from engine.
  • Reposition hose clamp from radiator.
  • Remove radiator outlet hose from radiator and vehicle.
  • Reverse procedure...

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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

  • Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...

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COMPONENT LOCATION DIAGRAMS FOR 2003 Cadillac CTS AUTOMOBILES

Component location diagrams for most 2003 Cadillac CTS cars and light trucks sold in the U.S. from 1990+.

Rear Exterior Lamps & Headlamp Leveling Sensors Diagram for 2003 Cadillac CTS  3.2 V6 GASRear Exterior Lamps & Headlamp Leveling Sensors Diagram for 2003 Cadillac CTS 3.2 V6 GAS

Components on diagram:
  • License Lamp
  • Center High Mounted Stop Lamp
  • Back Up Lamp
  • Fog Lamp
  • Tail Lamp Assembly
  • Park Brake Subsystem Component Diagram for 2003 Cadillac CTS  3.2 V6 GASPark Brake Subsystem Component Diagram for 2003 Cadillac CTS 3.2 V6 GAS

    Components on diagram:
  • Park Brake Switch
  • Park Brake Switch Connector
  • Park Brake Assembly
  • Park Brake Cable
  • CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac CTS PARTS/COMPONENTS LOCATION DIAGRAMS!

    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:
  • High Speed Fan Relay
  • Engine Control Module
  • Cooling Fan- Right
  • Cooling Fan- Left
  • 2003 Cadillac CTS  3.2 V6 GAS Wiring Diagram2003 Cadillac CTS 3.2 V6 GAS Wiring Diagram

    Components on diagram:
  • Evaporator Temperature Sensor
  • Mode Actuator
  • Air Temperature Actuator
  • Heater/Vent/ Air Conditioning Control Module
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    TECHNICAL SERVICE BULLETINS FOR 2003 Cadillac CTS AUTOMOBILES

    OEM TSB listings for most 2003 Cadillac CTS cars and light trucks sold in the U.S. from 1985+.

    Document: Revised General Motors New Vehicle Tire Warranty Program
    Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • Document: Squeak/Creak Type Noise from Front of Vehicle When Braking or Turning
    Vehicle: 2003 Cadillac CTS 3.2 V6 GAS

    Symptoms:
  • Noise
  • Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • Steering, Suspension
  • CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac CTS TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 Cadillac CTS AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Cadillac CTS cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 Cadillac CTS cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 Cadillac CTS cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 Cadillac CTS cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac CTS SPECIFICATIONS DATA!

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