It's a VW, not a GM

And how old is the A+ cert?. Mine is over ten years old and although I've done the best I can, I haven't had to stay current because it's not relevant to my job. How many other people are in that same boat?

If I wasn't going to do the work myself, I'd look for a good electronics shop rather than take the PC to some tech with an A+, but no understanding of why the PC works the way it does.