RPO GT4 3.73 rear axle code

so i have been seeing a lot of RPO G80 axle codes on here recently and started wondering what my rear axle is. come to find out that its the RPO GT4 3.73 rear axle code. so is this a good axle or will i be having issues with it in the future? it has 128xxx on the od right now and its my dd so any heads up or insight will be helpful. thanks!

GT4 is the RPO for the 3.73's. G80 is the RPO for the piece o' crap diff GM uses (I think Eaton makes it). You don't have to worry about it, if you don't abuse it. I broke mine almost 2 years ago (as in it no longer functions as a posi) and my rear end is still together.