Need help fixing a P0410 code.

Thank you for the reply, unfortunately the link took me to a page that said "Not Found". I guess what I'm wondering is what is the first thing that I should replace to rectify the issue? Or does everything need replacing, check valves, AIR pump, relays, hoses etc..? I know GM released a kit so this kind of thing wouldn't keep happening but I can't seem to find it or the part number for it.

You'll be replacing the valves, the hoses, the motor. GM did have a kit and that link used to outline the whole routine. I'll have to look for another way for you to see it.

Ah, well even if you can't find another way, thanks! I do appreciate your time and help big time.