Pedal sizing

[Tacowhip1681]

Get guys, forum and bike repair noob here. I picked up a 1994 gt performer (always wanted one when I was a kid). The pedals are in bad shape and need to be replaced. I've done some research and 1/2 and 9/16 are the common size of pedals based on 1 or 3 piece cranks. I've measured the diamater of the threaded end and it's neither size. Anyone know off the bat whit size runs on my gt? It's bone stock btw.

[DaveM]

If it has one piece cranks, it's 1/2", if it has three piece cranks, it's 9/16.

FYI that the left pedal has reverse threads. Be careful which side you put the pedals on and which way you tighten.