One problem related to battery dead 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.
2002 cadallic ctc has not truck key lock. Adverse conditions occur when the battery fails as all, and I mean all systems shut down. One cannot get into the trunk,use the phone, or even get the keys out of the ignition. But, not having a key lock for the truck is dangerous and unsafe.