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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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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
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!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES
Manual Air Conditioning & Heater System Diagnosis & Testing -> Technical Service Bulletins -> HVAC System Inoperative For Drive Cycle, Poor HVAC System Performance In High Ambient Temperatures -> 2003 Bravada, Envoy & TrailBlazer
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS
2003 Bravada, Envoy & TrailBlazer
On some of these models there may be no cold air from the HVAC system during a drive cycle. This may occur at any time during the drive cycle and at any temperature setting. The HVAC system operation returns to normal after the vehicle has been keyed to off and restarted. This is inter...
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BRAKE SERVICE PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES
Anti-lock Brakes -> Delphi DBC 7 -> Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Alero, Cavalier, Grand Am, Malibu & Sunfire -> Century, Impala, Monte Carlo & Regal -> Clearing Diagnostic Trouble Codes -> CTS -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> EBCM Terminal Identification -> Electromagnetic Interference Test -> Intermittents & Poor Connections -> Wiring Diagrams
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS
Accessing Diagnostic Trouble Codes
Diagnostic Trouble Codes (DTCs) may be read using a suitably programed scan tool. There are no provisions for flash code diagnostics.
- Turn ignition switch to Off position.
- Connect suitably programmed scan tool connected to Data Link Connector (DLC), located under lefthand side of instrument panel below steering column.
- Turn ignition switch to On position.
- Select scan tool Special Functions.
- Select and run Automated Test.
- Record all DTCs.
Diagnostic Trouble Code Interpretation
Diagnostic Trouble Codes (DTCs) may be read using a suitably programmed sc...
[[table data]] [[table data]] [[table data]]CLICK HERE TO GET FULL ACCESS TO 2003 Cadillac CTS BRAKE SERVICE PROCEDURES
FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Component Locations -> Electra (1985-90), Park Avenue (1991-98), LeSabre (1999-86), DeVille (1985-05), CTS, DTS, Fleetwood (1985-92), 88 (1999-86), 98 (1985-96), LSS, Regency, Bonneville (1987-05) & STS (2005-06)
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS
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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 Engine Or Service Now Soon Engine Indicator Lamps (Gasoline Engines w/Electronic Engine Controls Or EFI) -> Except LeMans, Metro, Prizm, Storm & Vibe
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS
The Check Engine lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detected a fault condition and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM memory can be cleared of codes as follows:
On models except Cadillac with DEFI, remove the ECM/PCM fuse or disconnect the battery ground cable for approximately 30...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Cadillac CTS AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Cadillac CTS 3.2 V6 GAS
- Drain engine coolant into suitable container.
- Remove condenser seal, radiator attaching bolts, then support brackets.
- Disconnect surge tank hose, then remove fan shroud attaching bolts.
- Disconnect upper radiator hose to radiator using tool No. J38185, or equivalent.
- Remove coolant bypass valve, placing aside, then release solenoid from fan shroud.
- Remove air cleaner assembly.
- Rotate, then remove A/C retaining clip and disconnect fan motor electrical conn...
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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+.
 Radio & Amplifiers Diagram for 2003 Cadillac CTS 3.2 V6 GASComponents on diagram: |
 Navigation System Component Views Diagram for 2003 Cadillac CTS 3.2 V6 GASComponents on diagram: |
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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 DiagramComponents on diagram: |
 2003 Cadillac CTS 3.2 V6 GAS Wiring DiagramComponents on diagram: |
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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+.
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Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2003 Cadillac CTS 3.2 V6 GAS Auto Systems: |
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Document: Squeak/Creak Type Noise from Front of Vehicle When Braking or Turning Vehicle: 2003 Cadillac CTS 3.2 V6 GAS Symptoms: |
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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
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