[COL 911]

I didn't notice if you suspected the starter in your diagnosis. I just had second Bosch reman starter replaced in seven years, with what sounds like similar symptoms. The faulty solenoid was failing to fully engage the starter gear, spinning the starter drive gear, but not pushing it into contact with the ring gear., key in, or out of ignition. To stop it, I had to disconnect negative battery cable. Bench test of starter reportedly confirmed this faulty starter solenoid issue.