pnm

You will see heavy cuts the first day with that gpa. Unless you are a legacy or have major pull, I wouldn't expect to go back to many houses other than A d Pi, A xi D, possibly KD and DG, maybe A phi or Zeta if you have everything else going for you.
If there is a particular reason your gpa is below a 2.75, (for ex: a learning disability, a bad year grades wise due to a family emergency, etc) you could consider relaying that information on to the women writing your letters of recommendation and they could make note of it on their letters to the chapter.

Hardest GPA wise will be pi phi, theta, tri delt, kappa, and chi o. These five houses maintain the top 5 chapter GPAs and make the hardest GPA cuts the first day or two. There are a lot of other factors that go into it like your resume, social media, being a legacy, and letters of rec. Grades are definitely an easy day 1 cut though. I know some girls who got into top houses with GPAs below 3.5 though if that makes you feel any better. And they weren't legacies