As others had said you can get a public defender for your court case however the DMV must also be addressed you should speak with an attorney and...

When a DUI conviction is expunged, under Penal Code §1203.4, does it come off one's DMV record?

Unfortunately no

It sounds like you may have a defense to the DUI you should speak with a qualified to turn in your area. You do not need to disclose pending...

In CA,Is it legal for cops to pull me over/conduct an investigation if they already have someone in custody in their back seat?

Of course they can stop you with another custody with back seat.

I live in North San Diego. Just received my third DUI in ten years. Is there any alternative to jail time, so I can save my job

Yes yes yes there are a lot of alternatives to jail the good news is that your priors are old 2005 2006 you should speak to an experienced...

What if you fail to complete the hospital course that was ordered by a judge for a dui?

Yes you do not want to have a probation violation and warrant issued go n get reassigned speak to your attorney

1st DUI and I am 57 years old

I agree with everyone else that has answered this is a question that should have gone over with your attorney the first interview before you hire him

How much information regarding the details of how I got the DUI will be included in a background check?

Generally nothing needs to be disclosed that you have a case pending only convictions for some employers some will require a police report...

Unfortunately no

Im currently under house arrest in san diego county and i need to appear in court in imperial county for bankruptcy in two mos.

I assume that you're talking about c pack or electronic surveillance you need to go in and the court order should be no problem