At UCI, to change in the CS major, you need at least a 2.0 GPA overall and in the prerequisite courses for the major:
http://www.changeofmajor.uci.edu/CoM_ICS.html
Getting into the CS major at Washington is more competitive, with about a 40% admission rate, with most admits having GPAs in the 3.4-4.0 range:
https://www.engr.washington.edu/current/admissions/admitstats