One problem related to steering idler arm 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. Consumer writes in regards to vehicle starts up and drives for a while then shuts down without warning. The consumer also stated the idler arms and crank sensors were replaced.