2001 Chevrolet Suburban Replace Bad Starter Followed Manual Instructions

I have to replace a bad starter. I have followed the manual instructions removing all bolts to the starter and transmission cover plate. I cannot remove the starter though. I push it forward and cannot get clearance to drop the starter down. I have been working on this for 2 hours and just cannot figure out the trick. please let me know what to do as it is raining now and my husband is doubting my ability.