My caliper seems to be sitcking and causing my brake to stay stuck, I was just when replacing the caliper do I have to bleed every caliper after I put the new one on or just the new one? I never did this before done my brakes and rotors many of time just never the calipers, thanks.

 

If you have never replaced your brake fluid, now is the time to do it, and then flush each line until clean DOTIII comes out. This will bleed the line in question as well. I suspect you would be fine just bleeding the one brake line, but there's no way to know how far up the line there is air, and if any of it got into the other lines. Bleed the whole car, just to be sure.

 

You may need to compress the piston, if it was not fully compressed last pad change the brake pad material maybe constantly contacting the rotor surface..