Several codes

Yep, you get these codes because the fuel pressure sensor on the fuel line under the car needs to be replaced, I would swap the part out and then clear the codes. Here is the location. Check out the images (below). Let us know how it goes

do you have a part number I can look for? and whether it is located on front or rear of the car?

It is at the rear of the car. Here is the part number. 12635273 GM part number

Thanks. Doing a search it says this is a fuel rail sensor on the engine

I don't think so on this car. I might be at the front of the fuel at the engine, it is hard to tell from the diagram. I agree most fuel pressure sensors are on the fuel rail. Did you look the diagram?

hard to tell whether it is on the front or rear based on the diagram to be honest

Yep, let me know what you find.

there is one on passenger side on front, when you remove the wheel there is one by firewall, and am sure it's a fuel sensor, could that be it? looked on rear and see nothing but the evap lines, no sensors of any kind anywhere...are there instructions on how to replace the one you talking about maybe it will tell me exactly where it is?

Can you upload an image so I can see?

This here. But its different than the part number you gave me. The one you gave me is the fue rail which looks like the 2nd picture

Yep, that is it!! good find.