The is acting like it doesn't want to start and sometimes doesn't but if it does, I am getting a service power steering message?? Are the two related?

The control panel shows a message stating this 'Service Stability System. I have already replaced sensor for my left rear wheel. The message still appears intermittently. What can cause this?

Replaced bearing which was bad and this noise started

Transmission Control System (MIL Request)

I have a Chevy Equinox 2012 bought it like a week ago and wrong put a regular gas 87 not knowing i should put a E85 gas and my car start stalling and cutting off when you out to drive I was told I need to change the camshaft sensor and I did but the problem persist. What can Ido

Chevy never tell people with Catayltic converter problem that is two on the Chevy Equinox, So you go to great length to find out what the problem is , I have replace o2 Sensors, Solenoids, and manifold. Chevy offer me $1300 to fix my car, help me qualified for $600 discount. If I had gone for this and found out later it could be another cataylic converter in the car, which chevy equinox has two. I believe Chevy is very much aware of the problems with the cataytlic converter problem. I am goung to justice for this issue,

Waited few minutes started ran well went home engine light came on.

Having two problem codes pop on my car p0172 p0013.
About a month ago I accidentally put SAE 5W30 oil in my car thinking I was full synthetic (I know dumb blonde move) and now these problem codes keep popping up.
What do they mean and can I still drive my car safely.

I can hear the actuator activate because to door slams

where do you find a place to enter the refrigeration

Initial start it make click sound, left turn clicking sound and when idle it shudders/shakes

bank 1 what does that mean and what do I need to fix it also said a circuit malfunction is that internal or external

What is the size of the bolt needed to secure the handle to the ceiling inside the passenger's side on the ceiling?