What Years Got PTU Drain Plugs?

[2L8V8_4sho]

I feel like I've done as much searching as I can. I cannot find a single source of information that lists what year cars got PTU's with factory drain plugs? I saw some information that 2013/2014's might have them, and that the PP's have them. Does anyone have this information?

 

['14SHO]

2013+ with PP