Just got back from the dealership...
"SIR Coil canceling cam plate separated from coil, verify concern. Remove steering column covers and turn signal switch for access. Inspect and found cam plate separated from coil. Necessary to SOP coil. Reassemble vehicle."
Thats verbatim from the service invoice. Took it in today to get a new radio and fix my turn signal auto-cancel. I'm waiting on them to special order the part to fix that, so I get to go back again when it arrives. (And they need to fix my dash because they jacked it up when they put the radio in.)
2005 Chevrolet Cobalt LS Sport