longshore1 - What is the staus of your GP ? What has been your experience ?

I have exactly the same problem as yours. My No.5 GP quit working and when I tried to remove it, it did not budge and the head of GP got rounded. I also tried to remove the No.4 and the head broke off while the rest of the GP is intact and still works by the way. I am curius as to how you resolved your problem, I am in SJ.

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2010 ML350 Bluetec
2012 Mustang Convertible