@Niting: Link for the appeal process: http://admissions.ucsc.edu/apply/appeals.html
Unable to find any statistical info regarding how many appeals were accepted last year, but very few waitlisted were accepted in 2014.
You have nothing to loose by appealing and everything to gain. An upward trend in GPA should help. Good Luck and you still have a good choice with UCR which opened a Medical school recently and will set aside spots specifically for UCR students.