My dad has an 06 Cobalt LS 2.2L that is having steering issues. It feels like it’s sticking or binding sometimes when turning. His car was not covered under the power steering recall. I replaced the power steering assist motor and the module (from a donor car) and it seemed to help but not fix it. We also already replaced the intermediate shaft with an AC Delco part. The only thing I am thinking that is left is the rack and pinion. What do you all think?