Its best to inspect the area of concern first before replacing parts. Axles do make a pop sound when turning, but you have more than just the axle moving on a turn. Struts, springs, ball joints, control arms, strut mounts, and sway bar endlinks all move too during a turn.
2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille