One problem related to engine knocking noise has been reported for the 2003 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Cadillac CTS based on all problems reported for the 2003 CTS.
2003 Cadillac Cts all I can say is im disgusted with this car nothing but problems. I dont know if that leakeage that is reported on here had something to do with what happened but now I have a car sitting in my driveway which I can't use because it has a loud knocking sound coming from engine. Which most than likely needs replaced which is very expensive can I say first Cadillac and will never buy another one ever. .