Growth Hormone and diabetes
Yes:


  That GH has an effect on glycaemic control is most evident from the abnormal glucose tolerance seen in acromegalics...


acromegaly is defined as abnormal growth of the hands, feet, and face, caused by overproduction of growth hormone by the pituitary gland.

Such an effect has been known for decades, which makes sense given how interrelated the axes are.  Although I think the best evidence is the fact that the side effects of growth hormone therapy says that Some patients have developed diabetes mellitus...