I have 2014 Camaro with manual transmission, I bought it from a used dealership. When I shift into 2nd gear, it shifts hard like it's about to fall out the bottom. And when I'm in 3rd or 4th gear at about 1.500 rpms it has a gurgling sound.
Didn't that problem show up during the pre-purchase inspection? Cars for used car dealers are almost always suspect, purchased by the dealer at auction where the car was placed because it couldn't be sold otherwise.
Hard shifting in a manual transmission can be caused by the clutch not releasing fully or by internal wear or abuse. (You didn't mention mileage but the trans lube should have been changed some time in the last 11 years to keep it healthy.) You might want to drain the transmission oil and see if any metal debris comes out with it.
