It doesnt all depend on your GPA. Programs look at the full picture. At least the one I got accepted in. Experience is important. Plus, have you got your CCRN maybe even subspecialties (CMC, CSC, etc). Are you involved in your unit? Committees? AACN member? You have good recommendations? Even with a not so competitive GPA, why not take a grad level course, Advanced Pathophys to help your case. GRE?
Above all, if you want it, you can get it. You just have to put the time and work into it.