Can I survive w/o a pituitary gland when tumor was removed was told pituitary also non-residual...Now having major issues following surgery

You . You can live well without a pituitary gland. But you will need close monitoring for metabolic problems. You will need very close supervision both from your personal physician and from an excellent endocrinologist. Various hormones will need to be taken and adjusted from time to time. It will be hard, but doable. Best wishes.
Surgeon. You need to discuss this with your surgeon and oncologist. They have more information about you.