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2005 Cadillac STS 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!Select Section
- 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2005 Cadillac STS 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 STS automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Disc Brakes -> AC-Delco Dual Piston Front Disc Brake -> Brake System Bleed -> Bleed Sequence -> Manual -> Pressure
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
Manual
Pressure bleeding is recommended for all hydraulic systems. However, if a pressure bleeder is unavailable, use the following procedure. Brake fluid damages painted surfaces. Immediately clean any spilled fluid.
- Remove vacuum reserve by pumping brakes several times with engine off.
- Fill master cylinder reservoir with clean brake fluid. Do not let reservoir fall below half full during bleeding procedure.
- If required, bleed master cylinder as follows:
- Loosen master cylinder forward brake line connection until fluid flows from reservoir, then tighten brake line.
- Have assistant t...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Pressure Relief -> Except Aveo, LaCrosse, LeMans (1988-93), Malibu & Malibu Maxx (2004-05), Metro, Nova, Prizm, Spectrum & Storm -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
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 vehicle relearns its adaptive strateg...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear (AWD) -> Rear (RWD)
Vehicle: 2005 Cadillac STS 4.6 V8 GAS
Front
- Raise and support vehicle.
- Remove the propeller shaft heat shield.
- Remove the propeller shaft CV joint-to-differential flange bolts. Reference mark the location of the propeller shaft constant velocity (CV) joint to the transfer case flange.
- Install a flat-bladed tool into the notch on the differential flange.
- Using a flat-bladed tool, carefully move the propeller shaft toward the rear of the vehicle in order to release the propeller shaft CV joint from the differential pinion flange.
- Remove the propeller shaft CV joint-to-transfer case flange bolts.
- Install a flat-bladed too...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Tests -> Intermittent & Poor Connections -> Intermittents -> Poor Connections
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
Accessing Diagnostic Trouble Codes
Connect a suitably programmed scan tool to DLC (Data Link Connector) and follow manufacturer's instructions.
Diagnostic Tests
Refer to Figs. and for diagnostic test procedures.
Clearing Diagnostic Trouble Codes
Connect a suitably programmed scan tool to DLC (Data Link Connector), and follow manufacturer's instructions.
Intermittent & Poor Connections
Intermittents
Most intermittents are caused by faulty electrical connections or wiring. Inspect for the following:
- Wiring broken inside insulation.
- Poor connection between male and female terminal at c...
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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 Air Cond Lamp -> Cadillac
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
This lamp should light when the A/C system detects a low refrigerant charge. The lamp should light for approximately two seconds after ignition has been turned on as a bulb inspection.
If while operating vehicle, the lamp lights for approximately 60 seconds and then goes off, the refrigerant level is low enough to cause reduced cooling capacity. At this point the blower motor will increase speed to try to offset the loss in cooling capacity. The lamp will be automatically reset after system has been inspected and refrigerant c...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2005 Cadillac STS AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2005 Cadillac STS 3.6 V6 GAS
Lower
- Drain cooling system into a suitable container.
- Remove air cleaner outlet duct.
- Reposition hose clamp from thermostat housing using hose clamp pliers J 38185 or equivalent.
- Remove radiator outlet hose from thermostat housing.
- Raise and support vehicle.
- Remove front air deflector retainers.
- Remove front air deflector.
- Remove engine control module (ECM) mounting nuts and reposition ECM aside.
- Reposition hose clamp from radiator using hose clamp pliers J 38185 or equ...
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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+.
 Top of the Windshield Diagram for 2005 Cadillac STS 4.6 V8 GASComponents on diagram: |
 C277 Diagram for 2005 Cadillac STS 3.6 V6 GASComponents 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.
 2005 Cadillac STS 3.6 V6 GAS Wiring DiagramComponents on diagram: |
 2005 Cadillac STS 3.6 V6 GAS Wiring DiagramComponents 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+.
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Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2005 Cadillac STS 4.6 V8 GAS Auto Systems: |
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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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