One problem related to starter relay has been reported for the 2004 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Cadillac CTS based on all problems reported for the 2004 CTS.
Service theft system has came on randomly which would not let the car be moved out of park. Which also causes the key to not be removed from ignition. The car also has intermittent starts and can be jumped at the starter relay in the fuse panel. This all happened when the car was stationary. It makes the gas gauge and temperature gauge not work but speed and rpm do work. T he lights on the shitter do not work along with rc not functioning and theft symbol showing on instrument cluster also. .