Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Cadillac CTS AutomaticFACTORY OEM SERVICE PROCEDURE
Automatic Transaxle Servicing
- Application
- Identification
- Lubrication
- On-Vehicle Service
- Adjustments
- Removal & Installation
- Notes
- Auxiliary Oil Cooler
- Control Valve Body Accumulator Assembly
- Drive Flange & Seal
- Extension Housing & Seal
- Floor Shift Control
- Floor Shift Control Boot
- Fluid Cooler Hose/Pipe
- Input Speed Sensor
- Internal Electrical Harness
- Manual Shaft Shift Position Switch
- Output Shaft Bearings
- Output Speed Sensor
- Parking Pawl
- Pressure Control Solenoid
- Shift Control Linkage
- Transmission Support
- Torque Converter Clutch/Cruise Control Release Switch
- Torque Converter Clutch Solenoid
- 1-2 Shift Solenoid
- 2-3 Shift Solenoid
- 4-5 Shift Solenoid
- Torque Specifications
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.