I believe my 2004 cts 3.6l timing chain is getting worse

1. When i have a cold startup, it makes a loud grinding chain noise for about 15 secs n goes away.

2. Starting to lose pickup

3 . Losing oil about qrt/1000mi

4. Im still have code P0019 cam shaft sensor( eventhough its brand new sensors)

5 i feel vibration in the pedal every so often.

6.getting a clicking noise in motor section, which i believe is changing my presets on radio/ and also disables my driver side door panel.

Any help wouuld be great