2003 Cadillac DeVille DTS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Cadillac DeVille DTS
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
2003 Cadillac DeVille DTS ProblemsFuel Level Sensor Failure
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.
The steering wheel position sensor may fail, resulting in the service stability message being displayed.
2003 Cadillac DeVille DTS Questionswhy am I replacing motor mounts front and rear (3 answers)
twice in the last year
All the relays are good and none of the fuses are blown but yet I can start the car with a toggle switch that I installed at the relay