Here is the deal
Here is the official UC application link https://admissions.universityofcalifornia.edu/applicant/login.htm
You have till Jan 3 2017 (3 days) to submit your completed application. That would mean you start in Fall 2017.
Here is a link to UC TAP http://admission.universityofcalifornia.edu/transfer/transfer-admission-planner/
You can basically do your application once on here and transfer it over to your official UC application, and there are some extra resources on UC TAP you may find useful.
IGETC will typically eliminate all the general ed requirements that are lower division, and that’s great, so do it, but talk to someone first in the counseling department since your major could impact this.
Your major requirements must be completed by the end of Spring 17. At time of application you aren’t required to have completed coursework for your major (necessarily), as far as I know, but you do have to complete it by the end of Spring 17 which is when you should graduate with your AA, AS, AAT, or AST.
Here are the UCR requirements (2.8GPA) and they do work with IGETC http://web2.assist.org/web-assist/report.do?agreement=aa&reportPath=REPORT_2&reportScript=Rep2.pl&event=19&dir=1&sia=LAEC&ria=UCR&ia=LAEC&oia=UCR&aay=16-17&ay=16-17&dora=CHE
Here are the UCI requirements for you, they don’t require a 3.4 GPA http://web2.assist.org/web-assist/report.do?agreement=aa&reportPath=REPORT_2&reportScript=Rep2.pl&event=19&dir=1&sia=LAEC&ria=UCI&ia=LAEC&oia=UCI&aay=16-17&ay=16-17&dora=ENGR.CHEM
I go to UCI, I had a lower GPA (3.1) at time of application and got in, but I’m a psychology major. I had good personal essays that I asked people to read through and help me to correct, and I had a 4.0 on all my work that was recent… Craft a tale of overcoming and growing as a student. If you need help you can PM me and I will read your essays, look for errors.
UCR will be more likely to admit you if you don’t raise your GPA.
UCI is competitive, but doesn’t seem to require that 3.4 GPA
UC Merced is easier to get into, but it’s in Merced
You may want to consider the CSU system as well, though I don’t know if that works for your major. They accept applications for entry in the Spring semester as well as the Fall semester, so that may be your only way out if you wish to continue in school after you graduate in Spring 17. Again this is because the UCs only take applications in Fall 2017 for Fall 2018, a year in advance.
Bottom line, get into your counseling office as soon as the school opens (this may be prior to classes starting) and talk to someone, because the details of your options are dependent on your major. Talk to a few counselors, go to your transfer center and talk with their counselors, ask for a representative from UCI, UCR, etc and ask what they think your chances are. I suggest you take UCLA off the table for now, apply to UCR, UCI, UCSD, and UCM (safety) and investigate applying to CSUs for your major. In your area you have CSULA CSUN CSULB CSUDH.
The other option you have is pursuing an ALTERNATE major when you apply in a few days. That means if you don’t get accepted for your primary major, you may be considered for another one if you meet requirements. What some people do is apply under a major that shares a lot of the same classes as their goal major, then once they are admitted into the university they transition over to the other major or do a double major. Could be an option for you, may not be.
Make sure you are checking who your professors are as you go forward from here, and are trying to get the best ones you can. Use http://www.ratemyprofessors.com/ and find out what you can, then weigh your options. Don’t just take whatever random professor seems to fit your schedule and then set yourself up for a lower GPA. Aim for professors who are challenging and liked, but not just easy A show up and pass types. Those are tempting, but then you don’t learn anything and will fail later on.
Good luck, have some faith, and work your ass off. At this point though if you are aiming for the Fall 2017 cohort, you are out of time and must submit your applications by Jan 3rd. So, that being the case, apply to UCR, UCI, and any other UCs you think you can get into. I wish you the best of luck, and a happy new year. No matter how things go, you will have options and can still be successful even if things do not work out right out the gate. I however have my fingers crossed for you, and think you have a chance !