Intermittent Dead Battery, Engine Runs with Ignition Off - keywords clamp fuse heater hose no nostart start switch wire

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

2005 Cadillac STS may experience a dead battery or a concern of the engine continuing to run after the ignition is shut off.

Inspect the engine wiring harness for chafing against the heater hose clamp at the bulkhead near the right cylinder head. If chafing is found, repair wiring and reroute the harness.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.