2010 Suburban LTZ-
My right side mirror is more and more moving the glass only, not the whole mirror, to the extreme outside angle when I shut off and restart. Tried several different settings on the park assist mirror setting to no avail. Anyone have any suggestions?

 

I don't understand. Can you take a picture of what you mean?

 

So the glass is moving but not the entire housing??
Try cycling the housing full closed and open a few times.

 

So it's pegging the mirror glass to the extreme outside? I'd wager a problem with the switch. Have you gone through the drive through recently with your windows open when it was raining? Did your power windows/mirrors switches on the arm rest get wet? It was a known problem for Bosch. I would disassemble the door, remove the switch in the arm rest, and clean it out with alcohol and compressed air. Worst case, buy a new one.

 

I agree. I couldn't get anything the door buttons control to work. I disassembled the entire switch and the circuit board was visibly dirty. cleaned it with alcohol and a cotton swab. works perfectly now, and took 15 minutes. be patient with the tabs so they don't break.