Pontiac sunfire died whilst driving

Its an Evap code, and usually doesn't cause drivability problems. it is also ususlly with another code? none tho? most common cause, bad gas cap, bad evap solenoid or plugged canister. but there again usually no drive problems.

Said 2 codes but both were same, what should I do?

So, does it run or not? You can check the things I mentioned in the above post, you might need a mechanic who has a scanner that can read live data. So when the car runs all of the systems are monitored and it will tell where the fault is.

Yeah it runs fine now but is worrying as it just died minutes after that light came on

Also mechanic said that fumes out of exhaust were a bit smoky with slight eggy smell

You may need to have a smoke test done in order to find the leak. This may be unrelated, but you can Google it if you want. I have a memory of a recall on gm 3800 v6 engines because of a plastic valve cover problem. It would leak oil onto the exhaust manifold, but also leak enough to be a chronic vacuum leak. Of course if you have this, you would have oil leaking and you would smell it on the hot manifold.