What are my chances of getting into UC schools? (UCLA, UCB, UCSB, UCD)

UCLA/UCB will be a Reach
UCSB/ UCD a High Match (50:50).

Your UC GPA is within range but ACT is a bit on the low side especially for Engineering. What is your ACT Math score and did you take any SAT subject tests (recommended Math 2 and a Science for the UC’s)?

The UC’s do have a higher acceptance rate for OOS applicants but only a few matriculate due to costs. Your stats will not garner you any merit aid (Regents/Chancellor scholarships) so as stated in the above posts, you will be paying around $65K/year to attend.

Freshman admit rates for UC GPA of 3.80-4.19 capped weighted and not major specific. Assume the more competitive majors require above the average stats.

UCB: 12.6%
UCLA: 11.7%
UCSD: 38.7%
UCSB: 53.6%
UCD: 56.5%
UCI: 52.1%
UCSC: 75.7%
UCR: 90.1%
UCM: 96.1%

2018 UC capped weighted GPA averages:
UCB: 4.23
UCLA: 4.23
UCSD: 4.16
UCSB: 4.13
UCI: 4.13
UCD: 4.11
UCSC: 3.96
UCR: 3.81
UCM: 3.71

25th - 75th percentiles for ACT:
UCB: 30-35
UCLA: 31-35
UCSD: 28-34
UCSB: 28-34
UCD: 26-33
UCI: 26-33
UCSC: 26-32
UCR: 22-30
UCM: 19-26