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2004 Cadillac CTS CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Cadillac REPAIR SHOPS DON'T WANT YOU TO KNOW

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!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2004 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 2004 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 2004 Cadillac CTS AUTOMOBILES

Component Replacement & Adjustment -> CTS -> Precautions -> Air Bag System Disarming & Arming -> Battery Ground Cable -> Fuel System Pressure Relief -> Oil Charge -> Product Compatibility
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

Air Bag System Disarming & Arming

Refer to and for air bag system disarming and arming procedures.

Battery Ground Cable

Prior to service, Disconnect and isolate battery ground cable.

Product Compatibility

Before replenishing refrigerant or refrigerant oil, ensure product compatibility with the system being serviced. Refer to for specifications.

Oil Charge

When replacing certain components of an air conditioning system an oil charge must be added to the system to keep the proper level of refrigerant oil in the system. Refer to for spec...

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BRAKE SERVICE PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Hydraulic Brake Systems -> Diagnosis & Testing
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

Refer to...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 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: 2004 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 2004 Cadillac CTS AUTOMOBILES

CV AXLE SHAFT, Replace
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

  • Raise and support vehicle.
  • Remove tire and wheel assembly.
  • Insert a drift or punch into brake rotor and against caliper in order to prevent wheel hub and bearing from turning.
  • Remove and discard wheel drive shaft spindle nut.
  • Remove drift or punch from rotor.
  • Remove rear knuckle assembly.
  • Using a suitable tool, carefully release wheel drive shaft from rear differential enough to install seal...

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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Component Locations
Vehicle: 2004 Cadillac CTS 3.2 V6 GAS

Refer to F...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Alternator, Replace
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

  • Disconnect battery ground cable.
  • Remove air cleaner assembly.
  • Drain coolant into suitable container.
  • Disconnect surge tank hose.
  • Remove fan shroud to radiator mounting bolts.
  • Disconnect upper radiator hose at radiator.
  • Remove A/C line retaining clip retaining screw.
  • Disconnect fan motor electrical connector.
  • Pull upward to remove fan as...

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Cabin Air Filter Service -> General Motors Corp./Saturn -> 2003-09 CTS
Vehicle: 2004 Cadillac CTS V 5.7 V8 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 2004 Cadillac CTS AUTOMOBILES

General Motors Corp./Saturn Cars -> Check Gauge Warning Lamp ->
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

The Check Gauge warning lamp will light to warn the driver to inspect the oil pressure gauge, engine coolant temperature ga...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

Lower

  • Drain cooling system into a suitable container.
  • Reposition hose clamp from radiator using hose clamp pliers J 38185 or equivalent.
  • Remove radiator outlet hose from radiator.
  • Reposition hose clamp from cooling pipe using hose clamp pliers J 38185 or equivalent.
  • Remove radiator outlet hose from cooling pipe and from vehicle.
  • Reverse proced...

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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Cadillac CTS AUTOMOBILES

Serpentine Drive Belt, Replace -> Accessory -> Air Conditioning
Vehicle: 2004 Cadillac CTS V 5.7 V8 GAS

Accessory

  • Rotate drive belt tensioner clockwise to release drive belt tension.
  • Slide drive belt off of water pump pulley.
  • Slowly release drive belt tensioner and remove drive belt from accessory drive pulleys.
  • Reverse procedure to install.

Air Conditioning

  • Remove accessory drive belt.
  • Disconnect surge tank hose.
  • Remove fan shroud to radiator mounting bolts.
  • ...

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COMPONENT LOCATION DIAGRAMS FOR 2004 Cadillac CTS AUTOMOBILES

Component location diagrams for most 2004 Cadillac CTS cars and light trucks sold in the U.S. from 1990+.

Ground Locations Diagram for 2004 Cadillac CTS  3.2 V6 GASGround Locations Diagram for 2004 Cadillac CTS 3.2 V6 GAS

Components on diagram:
  • Ground G-101
  • Ground G-304
  • Ground G-402
  • Ground G-100
  • Ground G-307
  • Heated Seat Components Diagram for 2004 Cadillac CTS V 5.7 V8 GASHeated Seat Components Diagram for 2004 Cadillac CTS V 5.7 V8 GAS

    Components on diagram:
  • Heated Seat Thermistor
  • Heated Seat Element
  • Seat Cover
  • CLICK HERE TO GET FULL ACCESS TO 2004 Cadillac CTS PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2004 Cadillac CTS AUTOMOBILES

    OEM drawn wiring diagrams for most 2004 Cadillac CTS cars and light trucks sold in the U.S.

    2004 Cadillac CTS  3.6 V6 GAS Wiring Diagram2004 Cadillac CTS 3.6 V6 GAS Wiring Diagram

    Components on diagram:
  • Radio
  • Digital Radio Receiver
  • Digital Radio Antenna
  • 2004 Cadillac CTS  3.6 V6 GAS Wiring Diagram2004 Cadillac CTS 3.6 V6 GAS Wiring Diagram

    Components on diagram:
  • Steering Wheel Controls
  • Inflatable Restraint Steering Wheel Module Coil
  • CLICK HERE TO GET FULL ACCESS TO 2004 Cadillac CTS WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2004 Cadillac CTS AUTOMOBILES

    OEM TSB listings for most 2004 Cadillac CTS cars and light trucks sold in the U.S. from 1985+.

    Document: Revised General Motors New Vehicle Tire Warranty Program
    Vehicle: 2004 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: 2004 Cadillac CTS 3.2 V6 GAS

    Symptoms:
  • Noise
  • Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • Steering, Suspension
  • CLICK HERE TO GET FULL ACCESS TO 2004 Cadillac CTS TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2004 Cadillac CTS AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 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 2004 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 2004 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 2004 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 2004 Cadillac CTS SPECIFICATIONS DATA!

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

    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 details about 2005 Cadillac CTS Turn Signal Light, Driver Side2005 Cadillac CTS Turn Signal Light, Driver Side, Bulbs included; With fog light; DOT and SAE approved; A high quality, direct fit OE replacement turn signal light..

    Source: Auto Body Parts Store

    $131.80

    Click here to view more details about 2008 Cadillac CTS 17" x 8" Alloy Wheel2008 Cadillac CTS 17" x 8" Alloy Wheel, Alloy Wheel; 17 X 8; 7 Spokes; 5 Lug; 115MM BP; Rear; Aftermarket Chrome, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $251.50

    Click here to view more details2005 Cadillac CTS V8, 5.7 L, 350 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

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    Click here to view more details2003 Cadillac CTS Used Parking Lamp, Passenger Side, Parklamp/Turn Signal; (bumper mtd), base, R., Very Good.

    Source: Used Auto Parts Store

    $128.00

    Click here to view more details2005 Cadillac CTS Used Bumper Bar, Front, W/SHOCKS, 4DR, Black, BASE, Very Good.

    Source: Used Auto Parts Store

    $287.00
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