have found that the rear brake caliper on trailblazer250 has the bleeder screw stripped out, can this be retapped and go to a bigger bleeder or do i need to buy a new caliper, where would be the best place to buy the caliper if i need to replace it, thank you very much

 

I would think that it would be way easier to drill it out and tap it
to a larger size!

 

You could also tap it larger and use a helicoil and use another stock bleeder.