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2005 Cadillac STS 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
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

BRAKE SERVICE PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Power Brake Units -> Application Chart
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2005 Cadillac STS 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: 2005 Cadillac STS 4.6 V8 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 2005 Cadillac STS AUTOMOBILES
CV AXLE SHAFT, Replace -> Left Front -> Rear -> Right Front
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
Left Front
- Raise and support vehicle.
- Remove left front tire and wheel assembly.
- Disconnect left outer tie rod end from steering knuckle. Do not loosen tie rod end jam nut.
- Insert a drift or punch into brake rotor and against brake caliper mounting bracket in order to prevent wheel hub and bearing from turning.
- Remove and discard wheel drive shaft spindle nut retaining wheel drive shaft to hub.
- Disconnect electrical connector from wheel speed sensor and reposition wiring harness away from ball joint. Be sure that wheel speed sensor wiring harness is repositioned away from ball ...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Description
Vehicle: 2005 Cadillac STS 4.6 V8 GAS
The TPMS (Tire Pressure Monitor System) warns the driver when a significant loss, or gain of tire pressure occurs in any of the four tires and allows the driver to display the individual tire pressures and the locations on the DIC (Driver Information Center) display. The system uses the DIM (Dash Integrated Module), IPC (Instrument Panel Cluster), DIC, remote control door lock receiver, a radio frequency transmitting pressure sensor in each wheel assembly and the serial data circuit.
When the vehicle is stationary, the sensor is inactive. When the vehicle is operated and as the vehic...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Alternator, Replace
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
- Disconnect battery ground cable.
- Rotate or lift belt tensioner arm, using a suitable tool to relieve tension from drive belt.
- Remove drive belt.
- Install suitable engine support tool.
- Raise and support vehicle.
- Disconnect alternator electrical connector.
- Position alternator output BAT terminal boot aside, then remove terminal nut and disconnect battery positive lead from alternator.
- ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Cabin Air Filter Service -> General Motors Corp./Saturn -> 2005-09 STS
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
On 2005-07 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 fi...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
General Motors Corp./Saturn Cars -> Service Electrical System Lamp -> Cadillac
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
This lamp should light when a fault condition in the charging system is present. The lamp should light during engine starting as a bulb inspection...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Radiator, Replace
Vehicle: 2005 Cadillac STS 4.6 V8 GAS
- Drain coolant into suitable container.
- On models equipped with standard cooling, proceed as follows:
- Disconnect Positive Crankcase Ventilation (PCV) tube from air cleaner duct.
- Disconnect air duct clamps at throttle body and Mass Air Flow/Intake Air Temperature (MAF/IAT) sensor.
- Remove air cleaner duct.
- Disconnect and position surge tank inlet hose aside.
- Remove cooling fan shroud upper radiator upper and lefthand lower mounting bolts.
- Disconnect cooling fan electrical connectors, then raise and support vehicle.
- Remove 16 retainers and front air deflector.
- Remove cooling fan shroud to ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Serpentine Drive Belt, Replace -> Alternator -> Water Pump, Air Conditioning Compressor and Power Steering Pump
Vehicle: 2005 Cadillac STS 4.6 V8 GAS
Water Pump, Air Conditioning Compressor and Power Steering Pump
- Remove fuel injector sight shield.
- Remove air cleaner outlet duct.
- On models with crankshaft driven cooling fan, remove cooling fan bracket.
- On all models, rotate drive belt tensioner clockwise to release drive belt tension.
- Slide drive belt from water pump pulley.
- Slide drive belt out from behind drive belt tensioner. Access belt from side of tensioner pulley in location of lower res...
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COMPONENT LOCATION DIAGRAMS FOR 2005 Cadillac STS AUTOMOBILES
Component location diagrams for most 2005 Cadillac STS cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2005 Cadillac STS AUTOMOBILES
OEM drawn wiring diagrams for most 2005 Cadillac STS cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2005 Cadillac STS AUTOMOBILES
OEM TSB listings for most 2005 Cadillac STS cars and light trucks sold in the U.S. from 1985+.
Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2005 Cadillac STS 4.6 V8 GAS Auto Systems: |
Document: GM of Canada New Vehicle Limited Warranty Tire Program Vehicle: 2005 Cadillac STS 4.6 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2005 Cadillac STS AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2005 Cadillac STS 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 2005 Cadillac STS 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 2005 Cadillac STS 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 2005 Cadillac STS 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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