2003 Cadillac Seville service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- STS Sedan 4-Door
- SLS Sedan 4-Door
Engines covered
- 4.6L 281Cu. In. V8 GAS DOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
ON CERTAIN CADILLAC DEVILLE AND SEVILLE PASSENGER VEHICLES, FUNERAL COACHES, AND LIMOUSINES EQUIPPED WITH A V8 (4.6L) ENGINE, OLDSMOBILE AURORA PASSENGER VEHICLES EQUIPPED WITH A V8 (4.0L ) ENGINE, AN
FUEL SYSTEM COMPONENTS CAN BE DAMAGED AND FUEL CAN LEAK FROM THE VEHICLE WHEN IT IS REFUELED. FUEL
DEALERS WILL REPLACE THE FUEL TANK PRESSURE SENSOR. OWNER NOTIFICATION BEGAN ON OCTOBER 17, 2003.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed fo
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected mo
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the deal
Showing the 8 most recent of 222 technical service bulletins on file with NHTSA.
I was driving the car all day and just had jumped back on highway doing around 65mph and all of a sudden the car threw itself into first gear it felt like and started accelerating on decelerating on i
I was driving the car all day and just had jumped back on highway doing around 65mph and all of a sudden the car threw itself into first gear it felt like and started accelerating on decelerating on i
I DRIVING ON I-20 WEST GOING APPROXIMATELY 70 MPH WHEN RIGHT REAR TIRE BLEW. I STOPPED IN EMERGENCY LANE AND MY CAR WOULDN'T STAY CRANKED. THERE WERE 7 WIRES THAT WERE CUT IN HALF. I COULDN'T CRANK C
I DRIVING ON I-20 WEST GOING APPROXIMATELY 70 MPH WHEN RIGHT REAR TIRE BLEW. I STOPPED IN EMERGENCY LANE AND MY CAR WOULDN'T STAY CRANKED. THERE WERE 7 WIRES THAT WERE CUT IN HALF. I COULDN'T CRANK C
THE FRAME BROKE. IT CAME APART - A FULL BREAK. I HAD DROPPED IT OFF AT MY GARAGE AND PARKED IT OUTSIDE. WHEN THEY MOVED IT INTO THE SHOP THEY FRAME CAME APART. I COULD HAVE BEEN DRIVING. I HOPE T
Showing the 5 most serious of 19 complaints filed with NHTSA.
