Impala Bearing Hub

40k miles Bertha Drives beautifully!!!!! But she has
developed flaws.

1. Intermittently sound like the door are locking, while your
driving the car! Or the horn will honk on it own. [FYI : my
mechanic friend told me that this is a common problem,
easy fix, actuator replacement]

2. I also experience a terrible shaking sensation in the front
driver side tire, steering wheel and brake. At first i could
only associate it with braking at high speeds, but over the
past month it has become regular! However there arent any
particular lights on the dash informing me of a problem but
i feel like im gonna lose my whole front end!!!

has anybody experienced this..... Bertha doesnt grind or
make noise she  just Shakes FURIOUSLY.