I was admitted to an SMP with a 2.8 cGPA, 2.5 sGPA, and GRE score (I don't remember what it was, but it wasn't as impressive as a 525 MCAT), but I did have 40 credits of DIY post-bacc coursework at 3.7-3.8. My advice is to email the SMP admissions with your exact situation before you actually apply. A program may advertise the minimum 3.0 GPA requirement, but some will make exceptions. My program had a 3.0-cut off and I was still admitted after I used this strategy, so it obviously works at least some of the time.