Availability: 8 in stock
The pivot bracket here is the GM part, numbered 85153567.
Varies by build: Convertible.
Brackets that carry load in shear rather than tension are sensitive to bolt grade, and substituting a lower grade is a common cause of elongation at the holes.
Confirm the number before you order, because a near match will bolt on and still be wrong. Send the VIN if the old marking has gone.