2004 Cadillac CTS 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
- V Sedan 4-Door
- Base Sedan 4-Door
Engines covered
- 5.7L 346Cu. In. V8 GAS OHV Naturally Aspirated
- 3.2L 197Cu. In. V6 GAS DOHC Naturally Aspirated
- 3.6L 3564CC 217Cu. In. V6 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
CERTAIN PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 207, "SEATING SYSTEMS." ONE OR BOTH FRONT ANCHOR TABS FOR THE FRONT BUC
IN SOME CRASH CONDITIONS, THE SEAT COULD PIVOT REARWARD AND ITS OCCUPANT OR A REAR SEAT OCCUPANT COU
DEALERS WILL ENSURE THAT BOTH FRONT ANCHOR TABS ARE FULLY SEATED IN THE FLOOR PAN REINFORCEMENT SLOT
ON CERTAIN PASSENGER VEHICLES, AN INTERACTION BETWEEN THE SENSING AND DIAGNOSTIC MODULE AND VEHICLE'S ELECTRICAL SYSTEM MAY CAUSE THE DRIVER'S FRONTAL AIR BAG AND/OR ROOF-MOUNTED SIDE IMPACT AIR BAG T
A PERSON POSITIONED FOR DRIVING MAY RECEIVE MINOR INJURIES, SUCH AS ABRASIONS, FROM CONTACT WITH A D
DEALERS WILL REPLACE THE SENSING AND DIAGNOSTIC MODULE FREE OF CHARGE. THE RECALL BEGAN ON MAY 20,
GENERAL MOTORS HAS NOTIFIED NHTSA OF A DEFECT IN CERTAIN MODEL YEAR 2003-2007 CADILLAC CTS VEHICLES CURRENTLY REGISTERED IN OR ORIGINALLY SOLD IN CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE,
THE BRAKE HOSE-TUBE INTERFACE MAY RUPTURE SUDDENLY WITHOUT PRIOR WARNING AND INCREASE VEHICLE STOPPI
DEALERS ARE TO REPLACE BOTH FRONT BRAKE HOSE ASSEMBLIES FREE OF CHARGE. THE SAFETY RECALL IS EXPECT
ON CERTAIN PASSENGER VEHICLES INVOLVED IN THIS CAMPAIGN, THE LOWER CONTROL ARM BALL STUD NUT/WASHER ASSEMBLIES WITH WASHERS WERE MADE OF THE WRONG MATERIAL. THE WASHERS MAY FRACTURE AND BECOME LOOSE
IF THE CONTROL ARM SEPARATES FROM THE KNUCKLE, THE AFFECTED CORNER OF THE VEHICLE WILL DROP AND THE
DEALERS WILL INSPECT THE BALL STUD JOINTS AND MEASURE THE TORQUE OF THE NUT FOR ALL FRONT LOWER CONT
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 a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P2097 or P2099. Technician will nee
This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
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
Showing the 8 most recent of 320 technical service bulletins on file with NHTSA.
DT*: THE CONTACT STATED WHILE ACCELERATING AT 10MPH FROM A STOP LIGHT THE VEHICLE WAS HIT ON THE PASSENGER SIDE. THE SIDE AIR BAGS DID NOT DEPLOY CAUSING INJURY TO THE THREE OCCUPANTS OF THE VEHICLE
COME TO STOP SIGN PUT FOOT ON BRAKE PEDAL TO STOP. INSTEAD OF STOPPING CAR STARTED TO ACCELERATE AND WOULD NOT STOP WITH BRAKE PEDAL APPLIED UNTIL IT WITH THROUGH NEIGHBORS BARN. TOTALLED VEHICLE.
DT*: THE CONTACT STATED THE TRANSMISSION BECAME STUCK IN REVERSE WHILE BACKING OUT OF A PARKING SPACE. THE VEHICLE EXCESSIVELY INCREASED IN SPEED WITHOUT WARNING, SPUN THREE TIMES AND COLLIDED WITH A
DT*: THE CONTACT STATED THE TRANSMISSION BECAME STUCK IN REVERSE WHILE BACKING OUT OF A PARKING SPACE. THE VEHICLE EXCESSIVELY INCREASED IN SPEED WITHOUT WARNING, SPUN THREE TIMES AND COLLIDED WITH A
TL* THE CONTACT OWNED A 2004 CADILLAC CTS EQUIPPED WITH UNIROYAL TIGER PAW TOURING TIRES, SIZE: 235/55R17 99HM+S (NA). WHILE DRIVING APPROXIMATELY 25 MPH ON SLIGHTLY WET ROADS, THE VEHICLE BEGAN TO HY
Showing the 5 most serious of 294 complaints filed with NHTSA.
